C8051F364-GQ Silicon Laboratories Inc, C8051F364-GQ Datasheet
C8051F364-GQ
Specifications of C8051F364-GQ
Available stocks
Related parts for C8051F364-GQ
C8051F364-GQ Summary of contents
Page 1
Analog Peripherals - 10-Bit ADC (‘F360/1/2/6/7/8/9 only) • 200 ksps • external single-ended or differential inputs • VREF from internal VREF, external pin or V • Internal or external start of conversion source • Built-in ...
Page 2
C8051F360/1/2/3/4/5/6/7/8/9 2 Rev. 1.0 ...
Page 3
Table of Contents 1. System Overview.................................................................................................... 18 1.1. CIP-51™ Microcontroller Core.......................................................................... 22 1.1.1. Fully 8051 Compatible.............................................................................. 22 1.1.2. Improved Throughput ............................................................................... 22 1.1.3. Additional Features .................................................................................. 23 1.2. On-Chip Memory............................................................................................... 24 1.3. On-Chip Debug Circuitry................................................................................... 24 1.4. Programmable Digital I/O ...
Page 4
C8051F360/1/2/3/4/5/6/7/8/9 9.4.3. General Purpose Registers ...................................................................... 87 9.4.4. Bit Addressable Locations........................................................................ 87 9.4.5. Stack ....................................................................................................... 87 9.4.6. Special Function Registers....................................................................... 88 9.4.7. Register Descriptions ............................................................................. 102 9.5. Power Management Modes ............................................................................ 104 9.5.1. Idle Mode................................................................................................ 105 9.5.2. Stop Mode .............................................................................................. ...
Page 5
PSWE Maintenance .................................................................... 141 13.3.3.System Clock ......................................................................................... 141 13.4.Flash Read Timing ......................................................................................... 143 14. Branch Target Cache ........................................................................................... 145 14.1.Cache and Prefetch Operation ....................................................................... 145 14.2.Cache and Prefetch Optimization................................................................... 146 15. External Data Memory Interface and On-Chip XRAM........................................ 153 ...
Page 6
C8051F360/1/2/3/4/5/6/7/8/9 18.3.SMBus Operation ........................................................................................... 203 18.3.1.Arbitration............................................................................................... 204 18.3.2.Clock Low Extension.............................................................................. 204 18.3.3.SCL Low Timeout................................................................................... 204 18.3.4.SCL High (SMBus Free) Timeout .......................................................... 205 18.4.Using the SMBus............................................................................................ 205 18.4.1.SMBus Configuration Register............................................................... 206 18.4.2.SMB0CN Control Register ..................................................................... 209 18.4.3.Data Register ......................................................................................... 212 18.5.SMBus ...
Page 7
Programmable Counter Array ............................................................................. 264 22.1.PCA Counter/Timer ........................................................................................ 265 22.2.Capture/Compare Modules ............................................................................ 266 22.2.1.Edge-triggered Capture Mode................................................................ 267 22.2.2.Software Timer (Compare) Mode........................................................... 268 22.2.3.High Speed Output Mode....................................................................... 269 22.2.4.Frequency Output Mode ........................................................................ 270 22.2.5.8-Bit Pulse Width Modulator Mode......................................................... 271 22.2.6.16-Bit ...
Page 8
C8051F360/1/2/3/4/5/6/7/8/9 List of Figures 1. System Overview Figure 1.1. C8051F360/3 Block Diagram ................................................................. 20 Figure 1.2. C8051F361/4/6/8 Block Diagram ........................................................... 21 Figure 1.3. C8051F362/5/7/9 Block Diagram ........................................................... 21 Figure 1.4. Comparison of Peak MCU Execution Speeds ....................................... 22 Figure 1.5. ...
Page 9
Figure 8.2. Comparator1 Functional Block Diagram ............................................... 71 Figure 8.3. Comparator Hysteresis Plot .................................................................. 72 9. CIP-51 Microcontroller Figure 9.1. CIP-51 Block Diagram .......................................................................... 81 Figure 9.2. Memory Map ......................................................................................... 86 Figure 9.3. SFR Page Stack .................................................................................... 89 Figure 9.4. ...
Page 10
C8051F360/1/2/3/4/5/6/7/8/9 18. SMBus Figure 18.1. SMBus Block Diagram ...................................................................... 202 Figure 18.2. Typical SMBus Configuration ............................................................ 203 Figure 18.3. SMBus Transaction ........................................................................... 204 Figure 18.4. Typical SMBus SCL Generation ........................................................ 207 Figure 18.5. Typical Master Transmitter Sequence ............................................... 213 Figure ...
Page 11
Figure 22.7. PCA Frequency Output Mode ........................................................... 270 Figure 22.8. PCA 8-Bit PWM Mode Diagram ........................................................ 271 Figure 22.9. PCA 16-Bit PWM Mode ..................................................................... 272 Figure 22.10. PCA Module 5 with Watchdog Timer Enabled ................................ 273 23. Revision Specific Behavior ...
Page 12
C8051F360/1/2/3/4/5/6/7/8/9 List of Tables 1. System Overview Table 1.1. Product Selection Guide ......................................................................... 19 2. Absolute Maximum Ratings Table 2.1. Absolute Maximum Ratings . . . . . . . . . . . . . . . . . ...
Page 13
Port Input/Output Table 17.1. Port I/O DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 201 18. SMBus Table 18.1. SMBus ...
Page 14
C8051F360/1/2/3/4/5/6/7/8/9 List of Registers SFR Definition 5.1. AMX0P: AMUX0 Positive Channel Select . . . . . . . . . . . . . . . . . . . 54 SFR Definition 5.2. AMX0N: AMUX0 Negative Channel Select ...
Page 15
SFR Definition 11.6. MAC0BL: MAC0 B Low Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 SFR Definition 11.7. MAC0ACC3: ...
Page 16
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 17.16. P2MDIN: Port2 Input Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 196 SFR Definition 17.17. P2MDOUT: ...
Page 17
C2 Register Definition 24.2. DEVICEID: C2 Device 284 C2 Register Definition 24.3. REVID: C2 Revision ...
Page 18
C8051F360/1/2/3/4/5/6/7/8/9 1. System Overview C8051F36x devices are fully integrated mixed-signal System-on-a-Chip MCUs. Highlighted features are listed below. Refer to Table 1.1 for specific product feature selection. • High-speed pipelined 8051-compatible microcontroller core (up to 100 MIPS) • In-system, full-speed, non-intrusive ...
Page 19
... Table 1.1. Product Selection Guide C8051F360-GQ 100 32 1024 100 32 1024 1 C8051F361-GQ 100 32 1024 2 C8051F362-GM C8051F363-GQ 100 32 1024 100 32 1024 1 C8051F364-GQ 2 100 32 1024 C8051F365- 1024 C8051F366- 1024 C8051F367- 1024 C8051F368- 1024 C8051F369-GM Notes: 1. Pin compatible with the C8051F310-GQ. 2. Pin compatible with the C8051F311-GM. ...
Page 20
C8051F360/1/2/3/4/5/6/7/8/9 C2D Debug / Programming Hardware C2CK/RST Reset CIP-51 8051 Controller Core Power-On Reset 32/16 kB ISP FLASH Supply Program Memory Monitor VDD 256 Byte RAM Power Net 1 kB XRAM GND 2-cycle Multiply and Accumulate System ...
Page 21
C2D Debug / Programming Hardware C2CK/RST Reset CIP-51 8051 Controller Core Power-On Reset 32/16 kB ISP FLASH Supply Program Memory Monitor VDD 256 Byte RAM 1 kB XRAM GND 2-cycle Multiply and Accumulate System Clock Setup XTAL1 ...
Page 22
C8051F360/1/2/3/4/5/6/7/8/9 1.1. CIP-51™ Microcontroller Core 1.1.1. Fully 8051 Compatible The C8051F36x family utilizes Silicon Labs' proprietary CIP-51 microcontroller core. The CIP-51 is fully compatible with the MCS-51™ instruction set; standard 803x/805x assemblers and compilers can be used to develop software. ...
Page 23
Additional Features The C8051F36x SoC family includes several key enhancements to the CIP-51 core and peripherals to improve performance and ease of use in end applications. The extended interrupt handler provides 16 interrupt sources into the CIP-51 (as opposed ...
Page 24
C8051F360/1/2/3/4/5/6/7/8/9 1.2. On-Chip Memory The CIP-51 has a standard 8051 program and data address configuration. It includes 256 bytes of data RAM, with the upper 128 bytes dual-mapped. Indirect addressing accesses the upper 128 bytes of general purpose RAM, and ...
Page 25
All the digital and analog peripherals are functional and work correctly while debugging. All the peripherals (except for the ADC and SMBus) are stalled when the MCU is halted, during single stepping breakpoint in ...
Page 26
C8051F360/1/2/3/4/5/6/7/8/9 The Digital Crossbar allows mapping of internal digital system resources to Port I/O pins. (See Figure 1.8.) On-chip counter/timers, serial buses, HW interrupts, comparator output, and other digital signals in the controller can be configured to appear on the ...
Page 27
PCA is clocked by an external source while the internal oscillator drives the system clock. Each capture/compare module can be configured to operate in one of six modes: Edge-Triggered Capture, Software Timer, High Speed Output, ...
Page 28
C8051F360/1/2/3/4/5/6/7/8/9 cated by a status bit and an interrupt (if enabled). The resulting 10-bit data word is latched into the ADC data SFRs upon completion of a conversion. Window compare registers for the ADC data can be configured to interrupt ...
Page 29
CP0EN CP0OUT CP0RIF CMX0N3 CP0FIF CMX0N2 CP0HYP1 CMX0N1 CP0HYP0 CMX0N0 CP0HYN1 CP0HYN0 CMX0P1 CMX0P0 P1.4 / P1.0 P2.3 / P1.4 P3.1 / P2.0 P3.5 / P2.4 P1.5 / P1.1 P2.4 / P1.5 P3.2 / P2.1 P3.6 / P2.5 Figure 1.12. ...
Page 30
C8051F360/1/2/3/4/5/6/7/8/9 CP1EN CP1OUT CP1RIF CP1FIF CP1HYP1 CMX1N1 CP1HYP0 CMX1N0 CP1HYN1 CP1HYN0 CMX1P1 CMX1P0 P2.0 / P1.2 P2.5 / P1.6 P3.3 / P2.2 P3.7 / P2.6 P2.1 / P1.3 P2.6 / P1.7 P3.4 / P2.3 P4.0 / P2.7 Figure 1.13. Comparator1 ...
Page 31
IDA0EN IDA0CM2 IDA0CM1 IDA0CM0 IDA0OMD1 IDA0OMD0 8 2 Figure 1.14. IDA0 Functional Block Diagram C8051F360/1/2/3/4/5/6/7/8/9 10 IDA0 Rev. 1.0 IDA0 31 ...
Page 32
C8051F360/1/2/3/4/5/6/7/8/9 2. Absolute Maximum Ratings Table 2.1. Absolute Maximum Ratings Parameter Ambient temperature under bias Storage Temperature Voltage on any Port I/O Pin or RST with respect to GND Voltage on V with respect to GND DD Maximum Total current ...
Page 33
Global Electrical Characteristics Table 3.1. Global Electrical Characteristics –40 to +85 °C, 25 MHz system clock unless otherwise specified. Parameter Digital Supply Voltage SYSCLK = MHz SYSCLK > 50 MHz Digital Supply RAM Data Retention Voltage ...
Page 34
C8051F360/1/2/3/4/5/6/7/8/9 Table 3.1. Global Electrical Characteristics (Continued) –40 to +85 °C, 25 MHz system clock unless otherwise specified. Parameter Digital Supply Current—CPU Inactive (Idle Mode, not fetching instructions from Flash 3 100 MHz I ...
Page 35
Table 3.2. Index to Electrical Characteristics Tables Peripheral Electrical Characteristics ADC0 Electrical Characteristics IDAC Electrical Characteristics Voltage Reference Electrical Characteristics Comparator Electrical Characteristics Reset Electrical Characteristics Flash Electrical Characteristics Internal High Frequency Oscillator Electrical Characteristics Internal Low Frequency Oscillator Electrical ...
Page 36
C8051F360/1/2/3/4/5/6/7/8/9 4. Pinout and Package Definitions Table 4.1. Pin Definitions for the C8051F36x Pin Pin Pin Name ‘F360/3 ‘F361/4/6/8 ‘F362/5/7/9 (48-pin) (32-pin) (28-pin) V 19, 31 GND 18, 30 AGND 6 — AV+ 7 — ...
Page 37
Table 4.1. Pin Definitions for the C8051F36x (Continued) Pin Pin Pin Name ‘F360/3 ‘F361/4/6/8 ‘F362/5/7/9 (48-pin) (32-pin) (28-pin P1.5 38 ...
Page 38
C8051F360/1/2/3/4/5/6/7/8/9 Table 4.1. Pin Definitions for the C8051F36x (Continued) Pin Pin Pin Name ‘F360/3 ‘F361/4/6/8 ‘F362/5/7/9 (48-pin) (32-pin) (28-pin P3.5 20 — P3.6 17 — P3.7 16 — ...
Page 39
P0.4 1 P0.3 2 P0.2 3 P0.1 4 P0.0 5 AGND 6 AV+ 7 /RST/C2CK 8 P4.6/C2D 9 P4.5 10 P4.4 11 P4.3 12 Figure 4.1. TQFP-48 Pinout Diagram (Top View) C8051F360/1/2/3/4/5/6/7/8/9 C8051F360/3 Rev. 1.0 P1.7 36 P2.0 35 P2.1 ...
Page 40
C8051F360/1/2/3/4/5/6/7/8/9 Figure 4.2. TQFP-48 Package Diagram Table 4.2. TQFP-48 Package Dimensions Dimension Min Nom A — — A1 0.05 — A2 0.95 1.00 b 0.17 0.22 c 0.09 — D 9.00 BSC. D1 7.00 BSC. e 0.50 BSC. Notes: 1. ...
Page 41
P0 P0.0 GND 3 VDD 4 C8051F361/4/6/8 5 /RST/C2CK 6 P3.0/C2D 7 P3.1 8 P3.2 Figure 4.3. LQFP-32 Pinout Diagram (Top View) C8051F360/1/2/3/4/5/6/7/8/9 Rev. 1.0 24 P1.2 23 P1.3 22 P1.4 21 P1.5 20 P1.6 19 P1.7 18 ...
Page 42
C8051F360/1/2/3/4/5/6/7/8/9 Figure 4.4. LQFP-32 Package Diagram Table 4.3. LQFP-32 Package Dimensions Dimension Min Nom A — — A1 0.05 — A2 1.35 1.40 b 0.30 0.37 c 0.09 — D 9.00 BSC. D1 7.00 BSC. e 0.80 BSC. Notes: 1. ...
Page 43
P0.1 1 P0.0 2 GND 3 C8051F362/5/7/9 VDD 4 /RST/C2CK 5 6 P3.0/C2D P2.7 7 Figure 4.5. QFN-28 Pinout Diagram (Top View) C8051F360/1/2/3/4/5/6/7/8/9 GND Rev. 1.0 21 P1.1 20 P1.2 19 P1.3 18 P1.4 17 P1.5 16 P1.6 15 P1.7 ...
Page 44
C8051F360/1/2/3/4/5/6/7/8/9 Figure 4.6. QFN-28 Package Drawing Table 4.4. QFN-28 Package Dimensions Dimension Min Nom A 0.80 0.90 A1 0.03 0.07 A3 0.25 REF b 0.18 0.25 D 5.00 BSC. D2 2.90 3.15 e 0.50 BSC. E 5.00 BSC. Notes: 1. ...
Page 45
C8051F360/1/2/3/4/5/6/7/8/9 Figure 4.7. Typical QFN-28 Landing Diagram Rev. 1.0 45 ...
Page 46
C8051F360/1/2/3/4/5/6/7/8/9 Figure 4.8. QFN-28 Solder Paste Recommendation 46 Rev. 1.0 ...
Page 47
ADC (ADC0, C8051F360/1/2/6/7/8/9) The ADC0 subsystem for the C8051F360/1/2/6/7/8/9 consists of two analog multiplexers (referred to col- lectively as AMUX0) with 23 total input selections, and a 200 ksps, 10-bit successive-approximation-regis- ter ADC with integrated track-and-hold and programmable ...
Page 48
C8051F360/1/2/3/4/5/6/7/8/9 5.1. Analog Multiplexer AMUX0 selects the positive and negative inputs to the ADC. Any of the following may be selected as the positive input: the AMUX0 Port I/O inputs, the on-chip temperature sensor, or the positive power supply (V ...
Page 49
Temperature Sensor The typical temperature sensor transfer function is shown in Figure 5.2. The output voltage (V positive ADC input when the temperature sensor is selected by bits AMX0P4-0 in register AMX0P. (mV) 1200 1100 1000 900 800 700 ...
Page 50
C8051F360/1/2/3/4/5/6/7/8/9 5.00 4.00 3.00 2.00 1.00 0.00 -40.00 -20.00 -1.00 -2.00 -3.00 -4.00 -5.00 Figure 5.3. Temperature Sensor Error with 1-Point Calibration 50 40.00 0.00 20.00 Temperature (degrees C) Rev. 1.0 5.00 4.00 3.00 2.00 1.00 0.00 60.00 80.00 -1.00 ...
Page 51
Modes of Operation ADC0 has a maximum conversion speed of 200 ksps. The ADC0 conversion clock is a divided version of the system clock, determined by the AD0SC bits in the ADC0CF register (system clock divided by (AD0SC + ...
Page 52
C8051F360/1/2/3/4/5/6/7/8/9 5.3.2. Tracking Modes According to Table 5.1, each ADC0 conversion must be preceded by a minimum tracking time for the con- verted result to be accurate. The AD0TM bit in register ADC0CN controls the ADC0 track-and-hold mode. In its ...
Page 53
Settling Time Requirements When the ADC0 input configuration is changed (i.e., a different AMUX0 selection is made), a minimum tracking time is required before an accurate conversion can be performed. This tracking time is determined by the AMUX0 resistance, ...
Page 54
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 5.1. AMX0P: AMUX0 Positive Channel Select SFR Page: all pages SFR Address: 0xBB – – – Bit7 Bit6 Bit5 Bits 7–5: UNUSED. Read = 000b; Write = don’t care. Bits 4–0: AMX0P4–0: AMUX0 Positive ...
Page 55
SFR Definition 5.2. AMX0N: AMUX0 Negative Channel Select SFR Page: all pages SFR Address: 0xBA – – – AMX0N4 AMX0N3 AMX0N2 AMX0N1 AMX0N0 00000000 Bit7 Bit6 Bit5 Bits 7–5: UNUSED. Read = 000b; Write = don’t care. ...
Page 56
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 5.3. ADC0CF: ADC0 Configuration SFR Page: all pages SFR Address: 0xBC R/W R/W R/W AD0SC4 AD0SC3 AD0SC2 Bit7 Bit6 Bit5 Bits 7–3: AD0SC4–0: ADC0 SAR Conversion Clock Period Bits. SAR Conversion clock is derived from system clock ...
Page 57
SFR Definition 5.6. ADC0CN: ADC0 Control SFR Page: all pages (bit addressable) SFR Address: 0xE8 R/W R/W R/W AD0EN AD0TM AD0INT AD0BUSY AD0WINT AD0CM2 AD0CM1 AD0CM0 00000000 Bit7 Bit6 Bit5 Bit 7: AD0EN: ADC0 Enable Bit. 0: ADC0 Disabled. ADC0 ...
Page 58
C8051F360/1/2/3/4/5/6/7/8/9 5.4. Programmable Window Detector The ADC Programmable Window Detector continuously compares the ADC0 output registers to user-pro- grammed limits, and notifies the system when a desired condition is detected. This is especially effective in an interrupt-driven system, saving code ...
Page 59
SFR Definition 5.9. ADC0LTH: ADC0 Less-Than Data High Byte SFR Page: all pages SFR Address: 0xC6 R/W R/W R/W Bit7 Bit6 Bit5 Bits 7–0: High byte of ADC0 Less-Than Data Word. SFR Definition 5.10. ADC0LTL: ADC0 Less-Than Data Low Byte ...
Page 60
C8051F360/1/2/3/4/5/6/7/8/9 5.4.1. Window Detector In Single-Ended Mode Figure 5.6 shows two example window comparisons for right-justified, single-ended data, with ADC0LTH:ADC0LTL = 0x0080 (128d) and ADC0GTH:ADC0GTL = 0x0040 (64d). In single-ended mode, the input voltage can range from ‘0’ to VREF ...
Page 61
Window Detector In Differential Mode Figure 5.8 shows two example window comparisons for right-justified, differential data, with ADC0LTH:ADC0LTL = 0x0040 (+64d) and ADC0GTH:ADC0GTH = 0xFFFF (-1d). In differential mode, the measurable voltage between the input pins is between -VREF ...
Page 62
C8051F360/1/2/3/4/5/6/7/8/9 Table 5.1. ADC0 Electrical Characteristics V = 3.0 V, VREF = 2.40 V (REFSL=0), –40 to +85 °C unless otherwise specified. DD Parameter DC Accuracy Resolution Integral Nonlinearity Differential Nonlinearity Offset Error Full Scale Error Dynamic Performance (10 kHz ...
Page 63
Current Mode DAC (IDA0, C8051F360/1/2/6/7/8/9) The C8051F360/1/2/6/7/8/9 devices include a 10-bit current-mode Digital-to-Analog Converter (IDAC). The maximum current output of the IDAC can be adjusted for three different current settings; 0.5 mA, 1 mA, and 2 mA. The ...
Page 64
C8051F360/1/2/3/4/5/6/7/8/9 6.1.2. Update Output Based on Timer Overflow Similar to the ADC operation, in which an ADC conversion can be initiated by a timer overflow indepen- dently of the processor, the IDAC outputs can use a Timer overflow to schedule ...
Page 65
SFR Definition 6.1. IDA0CN: IDA0 Control SFR Page: all pages SFR Address: 0xB9 R/W R/W R/W IDA0EN IDA0CM Bit7 Bit6 Bit5 Bit 7: IDA0EN: IDA0 Enable. 0: IDA0 Disabled. 1: IDA0 Enabled. Bits 6–4: IDA0CM[2:0]: IDA0 Update Source Select bits. ...
Page 66
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 6.3. IDA0L: IDA0 Data Word LSB SFR Page: all pages SFR Address: 0x96 R/W R/W R — Bit7 Bit6 Bit5 Bits 7–6: IDA0 Data Word Low-Order Bits. Lower 2 bits of the 10-bit Data Word. Bits 5–0: ...
Page 67
Voltage Reference (C8051F360/1/2/6/7/8/9) The Voltage reference MUX on the C8051F360/1/2/6/7/8/9 devices is configurable to use an externally connected voltage reference, the internal reference voltage generator, or the V (see Figure 7.1). The REFSL bit in the Reference Control register ...
Page 68
C8051F360/1/2/3/4/5/6/7/8/9 complete Port I/O configuration details. The TEMPE bit in register REF0CN enables/disables the tempera- ture sensor. While disabled, the temperature sensor defaults to a high impedance state and any ADC0 measurements performed on the sensor result in meaningless data. ...
Page 69
Table 7.1. Voltage Reference Electrical Characteristics V = 3.0 V; –40 to +85 °C unless otherwise specified. DD Parameter Output Voltage 25 °C ambient VREF Short-Circuit Current VREF Temperature Coefficient Load Regulation Load = 0 to 200 µA to AGND ...
Page 70
C8051F360/1/2/3/4/5/6/7/8/9 8. Comparators C8051F36x devices include two on-chip programmable voltage comparators, Comparator0 and Comparator1, shown in Figure 8.1 and Figure 8.2 (Note: the port pin Comparator inputs differ between C8051F36x devices. The first Port I/O pin shown is for C8051F360/3 ...
Page 71
CP1OUT CP1HYP1 CMX1N1 CP1HYP0 CMX1N0 CP1HYN1 CP1HYN0 CMX1P1 CMX1P0 P2.0 / P1.2 P2.5 / P1.6 P3.3 / P2.2 P3.7 / P2.6 P2.1 / P1.3 P2.6 / P1.7 P3.4 / P2.3 P4.0 / P2.7 Figure 8.2. Comparator1 Functional Block Diagram A ...
Page 72
C8051F360/1/2/3/4/5/6/7/8/9 CP0+ VIN+ + CP0 CP0- _ VIN- CIRCUIT CONFIGURATION Positive Hysteresis Voltage (Programmed with CP0HYP Bits) VIN- INPUTS VIN OUTPUT V OL Positive Hysteresis Disabled Figure 8.3. Comparator Hysteresis Plot The Comparator hysteresis is software-programmable via the ...
Page 73
SFR Definition 8.1. CPT0CN: Comparator0 Control SFR Page: all pages SFR Address: 0x9B R/W R R/W CP0EN CP0OUT CP0RIF Bit7 Bit6 Bit5 Bit 7: CP0EN: Comparator0 Enable Bit. 0: Comparator0 Disabled. 1: Comparator0 Enabled. Bit 6: CP0OUT: Comparator0 Output State ...
Page 74
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 8.2. CPT0MX: Comparator0 MUX Selection SFR Page: all pages SFR Address: 0x9F R/W R/W R/W – – CMX0N1 CMX0N0 Bit7 Bit6 Bit5 Bits 7–6: UNUSED. Read = 11b, Write = don’t care. Bits 5–4: CMX0N1–CMX0N0: Comparator0 Negative ...
Page 75
SFR Definition 8.3. CPT0MD: Comparator0 Mode Selection SFR Page: all pages SFR Address: 0x9D R R R/W – – CP0RIE CP0FIE Bit7 Bit6 Bit5 Bits 7–6: UNUSED. Read = 00b, Write = don’t care. Bit 5: CP0RIE: Comparator0 Rising-Edge Interrupt ...
Page 76
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 8.4. CPT1CN: Comparator1 Control SFR Page: all pages SFR Address: 0x9A R/W R R/W CP1EN CP1OUT CP1RIF Bit7 Bit6 Bit5 Bit 7: CP1EN: Comparator1 Enable Bit. 0: Comparator1 Disabled. 1: Comparator1 Enabled. Bit 6: CP1OUT: Comparator1 Output ...
Page 77
SFR Definition 8.5. CPT1MX: Comparator1 MUX Selection SFR Page: all pages SFR Address: 0x9E R/W R/W R/W – – CMX1N1 CMX1N0 Bit7 Bit6 Bit5 Bits 7–6: UNUSED. Read = 11b, Write = don’t care. Bits 5–4: CMX1N1–CMX1N0: Comparator1 Negative Input ...
Page 78
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 8.6. CPT1MD: Comparator1 Mode Selection SFR Page: all pages SFR Address: 0x9C R R R/W – – CP1RIE Bit7 Bit6 Bit5 Bits 7–6: UNUSED. Read = 00b, Write = don’t care. Bit 5: CP1RIE: Comparator1 Rising-Edge Interrupt ...
Page 79
Table 8.1. Comparator Electrical Characteristics V = 3.0 V, –40 to +85 °C unless otherwise noted. DD Parameter CPx+ – CPx– = 100 mV Response Time: * Mode 0, Vcm = 1.5 V CPx+ – CPx– = –100 mV CPx+ ...
Page 80
C8051F360/1/2/3/4/5/6/7/8/9 9. CIP-51 Microcontroller The MCU system controller core is the CIP-51 microcontroller. The CIP-51 is fully compatible with the MCS-51™ instruction set; standard 803x/805x assemblers and compilers can be used to develop soft- ware. The MCU family has a ...
Page 81
ACCUMULATOR PSW DATA POINTER PC INCREMENTER PROGRAM COUNTER (PC) PRGM. ADDRESS REG. CONTROL RESET LOGIC CLOCK STOP POWER CONTROL IDLE Figure 9.1. CIP-51 Block Diagram 9.2. Programming and Debugging Support A C2-based serial interface is provided for in-system programming of ...
Page 82
C8051F360/1/2/3/4/5/6/7/8/9 9.3. Instruction Set The instruction set of the CIP-51 System Controller is fully compatible with the standard MCS-51™ instruc- tion set; standard 8051 development tools can be used to develop software for the CIP-51. All CIP-51 instructions are the ...
Page 83
Table 9.1. CIP-51 Instruction Set Summary (Continued) Mnemonic Description DEC A Decrement A DEC Rn Decrement register DEC direct Decrement direct byte DEC @Ri Decrement indirect RAM INC DPTR Increment Data Pointer MUL AB Multiply A and B DIV AB ...
Page 84
C8051F360/1/2/3/4/5/6/7/8/9 Table 9.1. CIP-51 Instruction Set Summary (Continued) Mnemonic Description MOV direct, @Ri Move indirect RAM to direct byte MOV direct, #data Move immediate to direct byte MOV @Ri, A Move A to indirect RAM MOV @Ri, direct Move direct ...
Page 85
Table 9.1. CIP-51 Instruction Set Summary (Continued) Mnemonic Description JZ rel Jump if A equals zero JNZ rel Jump if A does not equal zero CJNE A, direct, rel Compare direct byte to A and jump if not equal CJNE ...
Page 86
C8051F360/1/2/3/4/5/6/7/8/9 9.4. Memory Organization The memory organization of the CIP-51 System Controller is similar to that of a standard 8051. There are two separate memory spaces: program memory and data memory. Program and data memory share the same address space ...
Page 87
Data Memory The CIP-51 implements 256 bytes of internal RAM mapped into the data memory space from 0x00 through 0xFF. The lower 128 bytes of data memory are used for general purpose registers and memory. Either direct or indirect ...
Page 88
C8051F360/1/2/3/4/5/6/7/8/9 and each CALL pushes two record bits onto the register. (A POP or decrement SP pops one record bit, and a RET pops two record bits, also.) The stack record circuitry can also detect an overflow or underflow on ...
Page 89
Interrupt Logic CIP-51 Figure 9.3. SFR Page Stack Automatic hardware switching of the SFR Page on interrupts may be enabled or disabled as desired using the SFR Automatic Page Control Enable Bit located in the SFR Page Control Register (SFR0CN). ...
Page 90
C8051F360/1/2/3/4/5/6/7/8/9 9.4.6.3. SFR Page Stack Example The following is an example that shows the operation of the SFR Page Stack during interrupts. In this example, the SFR Page Control is left in the default enabled state (i.e., SFRPGEN = 1), ...
Page 91
SFRPAGE pushed to SFRNEXT Figure 9.5. SFR Page Stack After ADC0 Window Comparator Interrupt Occurs While in the ADC0 ISR, a PCA interrupt occurs. Recall the PCA interrupt is configured as a high priority interrupt, while the ADC0 interrupt is ...
Page 92
C8051F360/1/2/3/4/5/6/7/8/9 On exit from the PCA interrupt service routine, the CIP-51 will return to the ADC0 Window Comparator ISR. On execution of the RETI instruction, SFR Page 0x00 used to access the PCA registers will be auto- matically popped off ...
Page 93
On the execution of the RETI instruction in the ADC0 Window Comparator ISR, the value in SFRPAGE register is overwritten with the contents of SFRNEXT. The CIP-51 may now access the OSCICN SFR bits as it did prior to the ...
Page 94
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 9.1. SFR0CN: SFR Page Control SFR Page: F SFR Address: 0xE5 R/W R/W R/W Reserved Reserved Reserved Reserved Reserved Reserved Reserved SFRPGEN 00000001 Bit7 Bit6 Bit5 Bits 7–1: RESERVED. Read = 0000000b. Must Write 0000000b. Bit 0: ...
Page 95
SFR Definition 9.3. SFRNEXT: SFR Next Register SFR Page: all pages SFR Address: 0x85 R/W R/W R/W Bit7 Bit6 Bit5 Bits 7–0: SFR Page Stack Bits: SFR page context is retained upon interrupts/return from interrupts byte SFR ...
Page 96
C8051F360/1/2/3/4/5/6/7/8/9 Table 9.2. Special Function Register (SFR) Memory Map 0(8) 1( SPI0CN PCA0L MAC0BL F P0MDIN E8 0 ADC0CN PCA0CPL1 PCA0CPH1 PCA0CPL2 PCA0CPH2 PCA0CPL3 PCA0CPH3 ACC P1MAT F XBR0 D8 0 ...
Page 97
Table 9.3. Special Function Registers SFRs are listed in alphabetical order. All undefined SFR locations are reserved. Register Address SFR Page ACC 0xE0 All Pages Accumulator ADC0CF 0xBC All Pages ADC0 Configuration ADC0CN 0xE8 All Pages ADC0 Control ADC0GTH 0xC4 ...
Page 98
C8051F360/1/2/3/4/5/6/7/8/9 Table 9.3. Special Function Registers (Continued) SFRs are listed in alphabetical order. All undefined SFR locations are reserved. Register Address SFR Page EMI0CF 0xC7 F EMI0CN 0xAA All Pages EMIF Control EMI0TC 0xF7 F FLKEY 0xB7 0 FLSCL 0xB6 ...
Page 99
Table 9.3. Special Function Registers (Continued) SFRs are listed in alphabetical order. All undefined SFR locations are reserved. Register Address SFR Page P0MAT 0xF3 0 P0MDIN 0xF1 F P0MDOUT 0xA4 F P0SKIP 0xD4 F P1 0x90 All Pages Port 1 ...
Page 100
C8051F360/1/2/3/4/5/6/7/8/9 Table 9.3. Special Function Registers (Continued) SFRs are listed in alphabetical order. All undefined SFR locations are reserved. Register Address SFR Page PCA0CPL2 0xEB All Pages PCA Module 2 Capture/Compare Low Byte PCA0CPL3 0xED All Pages PCA Module 3 ...
Page 101
Table 9.3. Special Function Registers (Continued) SFRs are listed in alphabetical order. All undefined SFR locations are reserved. Register Address SFR Page SP 0x81 All Pages Stack Pointer SPI0CFG 0xA1 All Pages SPI Configuration SPI0CKR 0xA2 All Pages SPI Clock ...
Page 102
C8051F360/1/2/3/4/5/6/7/8/9 9.4.7. Register Descriptions Following are descriptions of SFRs related to the operation of the CIP-51 System Controller. Reserved bits should not be set to logic ‘1’. Future product versions may use these bits to implement new features in which ...
Page 103
SFR Definition 9.8. PSW: Program Status Word SFR Page: all pages (bit addressable) SFR Address: 0xD0 R/W R/W R Bit7 Bit6 Bit5 Bit 7: CY: Carry Flag. This bit is set when the last arithmetic operation resulted ...
Page 104
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 9.9. ACC: Accumulator SFR Page: all pages (bit addressable) SFR Address: 0xE0 R/W R/W R/W ACC.7 ACC.6 ACC.5 Bit7 Bit6 Bit5 Bits 7–0: ACC: Accumulator. This register is the accumulator for arithmetic operations. SFR Definition 9.10. B: ...
Page 105
Idle Mode Setting the Idle Mode Select bit (PCON.0) causes the CIP-51 to halt the CPU and enter Idle mode as soon as the instruction that sets the bit completes. data. All analog and digital peripherals can remain active ...
Page 106
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 9.11. PCON: Power Control SFR Page: all pages SFR Address: 0x87 R/W R/W R/W Reserved Reserved Reserved Reserved Reserved Reserved Bit7 Bit6 Bit5 Bits 7–3: RESERVED. Read = 000000b. Must Write 000000b. Bit 1: STOP: STOP Mode ...
Page 107
Interrupt Handler The C8051F36x family includes an extended interrupt system supporting a total of 16 interrupt sources with two priority levels. The allocation of interrupt sources between on-chip peripherals and external input pins varies according to the specific version ...
Page 108
C8051F360/1/2/3/4/5/6/7/8/9 10.2. Interrupt Priorities Each interrupt source can be individually programmed to one of two priority levels: low or high. A low prior- ity interrupt service routine can be preempted by a high priority interrupt. A high priority interrupt cannot ...
Page 109
Table 10.1. Interrupt Summary (Continued) Interrupt Interrupt Source Vector Programmable Counter 0x005B Array Comparator0 0x0063 Comparator1 0x006B Timer 3 Overflow 0x0073 RESERVED 0x007B Port Match 0x0083 10.4. Interrupt Register Descriptions The SFRs used to enable the interrupt sources and set ...
Page 110
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 10.1. IE: Interrupt Enable SFR Page: all pages (bit addressable) SFR Address: 0xA8 R/W R/W R/W EA ESPI0 ET2 Bit7 Bit6 Bit5 Bit 7: EA: Global Interrupt Enable. This bit globally enables/disables all interrupts. It overrides the ...
Page 111
SFR Definition 10.2. IP: Interrupt Priority SFR Page: all pages (bit addressable) SFR Address: 0xB8 R R/W R/W – PSPI0 PT2 Bit7 Bit6 Bit5 Bit 7: UNUSED. Read = 1b, Write = don't care. Bit 6: PSPI0: Serial Peripheral Interface ...
Page 112
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 10.3. EIE1: Extended Interrupt Enable 1 SFR Page: all pages SFR Address: 0xE6 R/W R/W R/W ET3 ECP1 ECP0 Bit7 Bit6 Bit5 Bit 7: ET3: Enable Timer 3 Interrupt. This bit sets the masking of the Timer ...
Page 113
SFR Definition 10.4. EIP1: Extended Interrupt Priority 1 SFR Page: F SFR Address: 0xCE R/W R/W R/W PT3 PCP1 PCP0 Bit7 Bit6 Bit5 Bit 7: PT3: Timer 3 Interrupt Priority Control. This bit sets the priority of the Timer 3 ...
Page 114
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 10.5. EIE2: Extended Interrupt Enable 2 SFR Page: all pages SFR Address: 0xE7 R/W R/W R/W – – – Bit7 Bit6 Bit5 Bits 7–2: UNUSED. Read = 000000b. Write = don’t care. Bit 1: EMAT: Enable Port ...
Page 115
External Interrupts The /INT0 and /INT1 external interrupt sources are configurable as active high or low, edge or level sensi- tive. The IN0PL (/INT0 Polarity) and IN1PL (/INT1 Polarity) bits in the IT01CF register select active high or active ...
Page 116
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 10.7. IT01CF: INT0/INT1 Configuration SFR Page: all pages SFR Address: 0xE4 R/W R/W R/W IN1PL IN1SL2 IN1SL1 Bit7 Bit6 Bit5 Note: Refer to SFR Definition 21.1. “TCON: Timer Control” on page 252 for INT0/1 edge- or level-sensitive ...
Page 117
Multiply And Accumulate (MAC0) The C8051F36x devices include a multiply and accumulate engine which can be used to speed up many mathematical operations. MAC0 contains a 16-by-16 bit multiplier and a 40-bit adder, which can perform integer or fractional ...
Page 118
C8051F360/1/2/3/4/5/6/7/8/9 11.2. Integer and Fractional Math MAC0 is capable of interpreting the 16-bit inputs stored in MAC0A and MAC0B as signed integers or as signed fractional numbers. When the MAC0FM bit (MAC0CF.1) is cleared to ‘0’, the inputs are treated ...
Page 119
Operating in Multiply and Accumulate Mode MAC0 operates in Multiply and Accumulate (MAC) mode when the MAC0MS bit (MAC0CF.0) is cleared to ‘0’. When operating in MAC mode, MAC0 performs a 16-by-16 bit multiply on the contents of the ...
Page 120
C8051F360/1/2/3/4/5/6/7/8/9 11.6. Rounding and Saturation A Rounding Engine is included, which can be used to provide a rounded result when operating on frac- tional numbers. MAC0 uses an unbiased rounding algorithm to round the data stored in bits 31–16 of ...
Page 121
Multiply Only Example The example below implements the equation: MOV MAC0CF, #01h ; Use integer numbers, and multiply only mode (add to zero) MOV MAC0AH, #12h ; Load MAC0A register with 1234 hex = 4660 decimal MOV MAC0AL, #34h ...
Page 122
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 11.1. MAC0CF: MAC0 Configuration SFR Page: 0 SFR Address: 0xD7 R R R/W – – MAC0SC MAC0SD MAC0CA MAC0SAT MAC0FM MAC0MS 00000000 Bit7 Bit6 Bit5 Bits 7–6: UNUSED: Read = 00b, Write = don’t care. Bit 5: ...
Page 123
SFR Definition 11.2. MAC0STA: MAC0 Status SFR Page: 0 SFR Address: 0xCF – – – Bit7 Bit6 Bit5 Bits 7–4: UNUSED: Read = 0000b, Write = don’t care. Bit 3: MAC0HO: Hard Overflow Flag. This bit is ...
Page 124
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 11.4. MAC0AL: MAC0 A Low Byte SFR Page: 0 SFR Address: 0xA4 Bit7 Bit6 Bit5 Bits 7–0: Low Byte (bits 7–0) of MAC0 A Register. SFR Definition 11.5. MAC0BH: MAC0 B High Byte SFR ...
Page 125
SFR Definition 11.7. MAC0ACC3: MAC0 Accumulator Byte 3 SFR Page: 0 SFR Address: 0xD5 Bit7 Bit6 Bit5 Bits 7–0: Byte 3 (bits 31–24) of MAC0 Accumulator. Note:The contents of this register should not be changed by software ...
Page 126
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 11.10. MAC0ACC0: MAC0 Accumulator Byte 0 SFR Page: 0 SFR Address: 0xD2 Bit7 Bit6 Bit5 Bits 7–0: Byte 0 (bits 7–0) of MAC0 Accumulator. Note:The contents of this register should not be changed by ...
Page 127
SFR Definition 11.13. MAC0RNDL: MAC0 Rounding Register Low Byte SFR Page: 0 SFR Address: 0xAE Bit7 Bit6 Bit5 Bits 7–0: Low Byte (bits 7–0) of MAC0 Rounding Register. C8051F360/1/2/3/4/5/6/7/8 Bit4 Bit3 Bit2 Bit1 ...
Page 128
C8051F360/1/2/3/4/5/6/7/8/9 12. Reset Sources Reset circuitry allows the controller to be easily placed in a predefined default condition. On entry to this reset state, the following occur: • CIP-51 halts program execution • Special Function Registers (SFRs) are initialized to ...
Page 129
Power-On Reset During power-up, the device is held in a reset state and the RST pin is driven low until delay occurs before the device is released from reset; the delay decreases as the V ...
Page 130
C8051F360/1/2/3/4/5/6/7/8/9 12.2. Power-Fail Reset/V DD When a power-down transition or power irregularity causes V monitor will drive the RST pin low and hold the CIP- reset state (see Figure 12.2). When level above V , ...
Page 131
SFR Definition 12.1. VDM0CN: V SFR Page: all pages SFR Address: 0xFF R VDMEN VDDSTAT Reserved Reserved Reserved Reserved Reserved Reserved Bit7 Bit6 Bit5 Bit 7: VDMEN: V Monitor Enable. DD This bit turns the V Monitor circuit ...
Page 132
C8051F360/1/2/3/4/5/6/7/8/9 12.6. PCA Watchdog Timer Reset The programmable Watchdog Timer (WDT) function of the Programmable Counter Array (PCA) can be used to prevent software from running out of control during a system malfunction. The PCA WDT function can be enabled ...
Page 133
SFR Definition 12.2. RSTSRC: Reset Source SFR Page: all pages SFR Address: 0xEF R R R/W – FERROR C0RSEF SWRSF Bit7 Bit6 Bit5 Note:For bits that act as both reset source enables (on a write) and reset indicator flags (on ...
Page 134
C8051F360/1/2/3/4/5/6/7/8/9 Table 12.1. Reset Electrical Characteristics –40 to +85 °C unless otherwise specified. Parameter I OL RST Output Low Voltage V DD RST Input High Voltage RST Input Low Voltage RST Input Pullup Impedance V POR Threshold ( ...
Page 135
Flash Memory All devices include either 32 kB (C8051F360/1/2/3/4/5/6/ (C8051F368/9) of on-chip, reprogram- mable Flash memory for program code or non-volatile data storage. The Flash memory can be pro- grammed in-system through the C2 interface, or ...
Page 136
C8051F360/1/2/3/4/5/6/7/8/9 erases will be disabled until the next system reset. Flash writes and erases will also be disabled if a Flash write or erase is attempted before the key codes have been written properly. The Flash lock resets after each ...
Page 137
Steps 3–8 must be repeated for each byte to be written For block Flash writes, the Flash write procedure is only performed after the last byte of each block is writ- ten with the MOVX write instruction. When writing to ...
Page 138
C8051F360/1/2/3/4/5/6/7/8/9 13.2. Security Options The CIP-51 provides security options to protect the Flash memory from inadvertent modification by soft- ware as well as to prevent the viewing of proprietary program code and constants. The Program Store Write Enable (bit PSWE ...
Page 139
Summary of Flash Security Options The level of Flash security depends on the Flash access method. The three Flash access methods that can be restricted are reads, writes, and erases from the C2 debug interface, user firmware executing on ...
Page 140
C8051F360/1/2/3/4/5/6/7/8/9 13.3. Flash Write and Erase Guidelines Any system which contains routines which write or erase Flash memory from software involves some risk that the write or erase routines will execute unintentionally if the CPU is operating outside its specified ...
Page 141
PSWE Maintenance 7. Reduce the number of places in code where the PSWE bit (b0 in PSCTL) is set to a '1'. There should be exactly one routine in code that sets PSWE to a '1' to write ...
Page 142
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 13.1. SFR Page: 0 SFR Address: 0x8F R/W R/W R/W – – – Bit7 Bit6 Bit5 Bits 7–2: UNUSED. Read = 000000b, Write = don't care. Bit 1: PSEE: Program Store Erase Enable. Setting this bit allows ...
Page 143
Flash Read Timing On reset, the C8051F36x Flash read timing is configured for operation with system clocks MHz. If the system clock will not be increased above 25 MHz, then the Flash timing registers may be ...
Page 144
C8051F360/1/2/3/4/5/6/7/8/9 Table 13.2. Flash Electrical Characteristics V = 2.7 to 3.6 V; –40 to +85 °C. DD Parameter Conditions C8051F360/1/2/3/4/5/6/7 Flash Size C8051F368/9 Endurance Erase Cycle Time Write Cycle Time *Note: 1024 Bytes at location 0x7C00 to 0x7FFF are reserved. ...
Page 145
Branch Target Cache The C8051F36x device families incorporate a 32x4 byte branch target cache with a 4-byte prefetch engine. Because the access time of the Flash memory is 40 ns, and the minimum instruction time (C8051F360/1/2/3/4/5/6/7) ...
Page 146
C8051F360/1/2/3/4/5/6/7/8/9 The replacement algorithm is selected with the Cache Algorithm bit, CHALGM (CCH0TN.3). When CHALGM is cleared to ‘0’, the cache will use the rebound algorithm to replace cache locations. The rebound algorithm replaces locations in order from the beginning ...
Page 147
Certain types of instruction data or certain blocks of code can also be excluded from caching. The destina- tions of RETI instructions are, by default, excluded from caching. To enable caching of RETI destinations, the CHRETI bit (CCH0CN.3) can be ...
Page 148
C8051F360/1/2/3/4/5/6/7/8/9 Cache Push Operations Decrement CHSLOT CHSLOT = 27 Cache Pop Operations Increment CHSLOT Figure 14.3. Cache Lock Operation 148 TAG 0 SLOT 0 TAG 1 SLOT 1 TAG 2 SLOT 2 TAG 26 SLOT 26 TAG 27 SLOT 27 ...
Page 149
SFR Definition 14.1. CCH0CN: Cache Control SFR Page: F SFR Address: 0x84 R/W R/W R/W CHWREN CHRDEN CHPFEN CHFLSH Bit7 Bit6 Bit5 Bit 7: CHWREN: Cache Write Enable. This bit enables the processor to write to the cache memory. 0: ...
Page 150
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 14.2. CCH0TN: Cache Tuning SFR Page: F SFR Address: 0xC9 R/W R/W R/W CHMSCTL Bit7 Bit6 Bit5 Bits 7–4: CHMSCTL: Cache Miss Penalty Accumulator (Bits 4–1). These are bits 4-1 of the Cache Miss Penalty Accumulator. To ...
Page 151
SFR Definition 14.3. CCH0LC: Cache Lock Control SFR Page: F SFR Address: 0xD2 R/W R/W R CHPUSH CHPOP RESERVED Bit7 Bit6 Bit5 Bit 7: CHPUSH: Cache Push Enable. This bit enables cache push operations, which will lock information in cache ...
Page 152
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 14.4. CCH0MA: Cache Miss Accumulator SFR Page: F SFR Address: 0xD3 R R/W R/W CHMSOV Bit7 Bit6 Bit5 Bit 7: CHMSOV: Cache Miss Penalty Overflow. This bit indicates when the Cache Miss Penalty Accumulator has overflowed since ...
Page 153
External Data Memory Interface and On-Chip XRAM For C8051F36x devices, 1k Bytes of RAM are included on-chip and mapped into the external data memory space (XRAM). Additionally, an External Memory Interface (EMIF) is available on the C8051F360/3 devices, which ...
Page 154
C8051F360/1/2/3/4/5/6/7/8/9 15.2. Configuring the External Memory Interface Configuring the External Memory Interface consists of five steps: 1. Configure the Output Modes of the associated port pins as either push-pull or open-drain (push-pull is most common), and skip the associated pins ...
Page 155
Table 15.1. EMIF Pinout (C8051F360/3) Multiplexed Mode Signal Name Port Pin /RD /WR ALE D0/A0 D1/A1 D2/A2 D3/A3 D4/A4 D5/A5 D6/A6 D7/ A10 A11 A12 A13 A14 A15 – – – – – – – – SFR Definition ...
Page 156
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 15.2. EMI0CF: External Memory Configuration SFR Page: F SFR Address: 0xC7 R/W R/W R/W – – – Bit7 Bit6 Bit5 Bits 7–5: UNUSED. Read = 000b. Write = don’t care. Bit 4: EMD2: EMIF Multiplex Mode Select. ...
Page 157
Multiplexed and Non-multiplexed Selection The External Memory Interface is capable of acting in a Multiplexed mode or a Non-multiplexed mode, depending on the state of the EMD2 (EMI0CF.4) bit. 15.4.1. Multiplexed Configuration In Multiplexed mode, the Data Bus and ...
Page 158
C8051F360/1/2/3/4/5/6/7/8/9 15.4.2. Non-multiplexed Configuration In Non-multiplexed mode, the Data Bus and the Address Bus pins are not shared. An example of a Non-multiplexed Configuration is shown in Figure 15.2. See Section “15.6.1. Non-multiplexed Mode” on page 162 for more information ...
Page 159
Memory Mode Selection The external data memory space can be configured in one of four modes, shown in Figure 15.3, based on the EMIF Mode bits in the EMI0CF register (SFR Definition 15.2). These modes are summarized below. More ...
Page 160
C8051F360/1/2/3/4/5/6/7/8/9 15.5.3. Split Mode with Bank Select When EMI0CF.[3:2] are set to ‘10’, the XRAM memory map is split into two areas, on-chip space and off-chip space. • Effective addresses below the internal XRAM size boundary will access on-chip XRAM ...
Page 161
SFR Definition 15.3. EMI0TC: External Memory Timing Control SFR Page: F SFR Address: 0xF7 R/W R/W R/W EAS1 EAS0 ERW3 Bit7 Bit6 Bit5 Bits 7–6: EAS1–0: EMIF Address Setup Time Bits. 00: Address setup time = 0 SYSCLK cycles. 01: ...
Page 162
C8051F360/1/2/3/4/5/6/7/8/9 15.6.1. Non-multiplexed Mode 15.6.1.1.16-bit MOVX: EMI0CF[4:2] = ‘101’, ‘110’, or ‘111’. ADDR[15:8] P3.4–P4.3 ADDR[7:0] P2 DATA[7:0] P1 /WR P4.5 /RD P4.4 ADDR[15:8] P3.4–P4.3 ADDR[7:0] P2 DATA[7:0] P1 /RD P4.4 /WR P4.5 Figure 15.4. Non-multiplexed 16-bit MOVX Timing 162 Nonmuxed ...
Page 163
MOVX without Bank Select: EMI0CF[4:2] = ‘101’ or ‘111’. ADDR[15:8] ADDR[7:0] P2 DATA[7:0] P1 /WR P4.5 /RD P4.4 ADDR[15:8] ADDR[7:0] P2 DATA[7:0] P1 /RD P4.4 /WR P4.5 Figure 15.5. Non-multiplexed 8-bit MOVX without Bank Select Timing C8051F360/1/2/3/4/5/6/7/8/9 Nonmuxed 8-bit ...
Page 164
C8051F360/1/2/3/4/5/6/7/8/9 15.6.1.3.8-bit MOVX with Bank Select: EMI0CF[4:2] = ‘110’. ADDR[15:8] P3.4–P4.3 ADDR[7:0] P2 DATA[7:0] P1 /WR P4.5 P4.4 /RD ADDR[15:8] P3.4–P4.3 ADDR[7:0] P2 DATA[7:0] P1 /RD P4.4 /WR P4.5 Figure 15.6. Non-multiplexed 8-bit MOVX with Bank Select Timing 164 Nonmuxed ...
Page 165
Multiplexed Mode 15.6.2.1.16-bit MOVX: EMI0CF[4:2] = ‘001’, ‘010’, or ‘011’. ADDR[15:8] P3.4–P4.3 EMIF ADDRESS (8 LSBs) from AD[7: ALEH ALE P0.0 /WR P4.5 /RD P4.4 ADDR[15:8] P3.4–P4.3 EMIF ADDRESS (8 LSBs) from AD[7: ALEH ALE ...
Page 166
C8051F360/1/2/3/4/5/6/7/8/9 15.6.2.2.8-bit MOVX without Bank Select: EMI0CF[4:2] = ‘001’ or ‘011’. ADDR[15:8] EMIF ADDRESS (8 LSBs) from AD[7: ALEH ALE P0.0 /WR P4.5 /RD P4.4 ADDR[15:8] EMIF ADDRESS (8 LSBs) from AD[7: ...
Page 167
MOVX with Bank Select: EMI0CF[4:2] = ‘010’. ADDR[15:8] P3.4–P4.3 EMIF ADDRESS (8 LSBs) from AD[7: ALEH ALE P0.0 /WR P4.5 /RD P4.4 ADDR[15:8] P3.4–P4.3 EMIF ADDRESS (8 LSBs) from AD[7: ...
Page 168
C8051F360/1/2/3/4/5/6/7/8/9 Table 15.2. AC Parameters for External Memory Interface Parameter Description T Address/Control Setup Time ACS T Address/Control Pulse Width ACW T Address/Control Hold Time ACH T Address Latch Enable High Time ALEH T Address Latch Enable Low Time ALEL ...
Page 169
Oscillators The C8051F36x devices include a programmable internal high-frequency oscillator, a programmable inter- nal low-frequency oscillator, and an external oscillator drive circuit. The internal high-frequency oscillator can be enabled, disabled, and calibrated using the OSCICN and OSCICL registers, as ...
Page 170
C8051F360/1/2/3/4/5/6/7/8/9 16.1.1. Internal Oscillator Suspend Mode When software writes a logic ‘1’ to SUSPEND (OSCICN.5), the internal oscillator is suspended. If the sys- tem clock is derived from the internal oscillator, the input clock to the peripheral or CIP-51 will ...
Page 171
SFR Definition 16.2. OSCICN: Internal Oscillator Control SFR Page: F SFR Address: 0xB7 R/W R R/W IOSCEN IFRDY SUSPEND Reserved Reserved Reserved Bit7 Bit6 Bit5 Bit 7: IOSCEN: Internal Oscillator Enable Bit. 0: Internal Oscillator Disabled. 1: Internal Oscillator Enabled. ...
Page 172
C8051F360/1/2/3/4/5/6/7/8/9 16.2.1. Calibrating the Internal L-F Oscillator Timers 2 and 3 include capture functions that can be used to capture the oscillator frequency, when run- ning from a known time base. When either Timer 2 or Timer 3 is configured ...
Page 173
External Oscillator Drive Circuit The external oscillator circuit may drive an external crystal, ceramic resonator, capacitor network. A CMOS clock may also provide a clock input. For a crystal or ceramic resonator configuration, the crystal/ resonator must ...
Page 174
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 16.4. CLKSEL: System Clock Selection SFR Page: F SFR Address: 0x8F R/W R/W R/W Reserved Reserved CLKDIV1 CLKDIV0 Reserved CLKSL2 Bit7 Bit6 Bit5 Bits 7–6: RESERVED. Read = 00b. Must Write 00b. Bits 5–4: CLKDIV1-0: Output SYSCLK ...
Page 175
SFR Definition 16.5. OSCXCN: External Oscillator Control SFR Page: F SFR Address: 0xB6 R R/W R/W XTLVLD XOSCMD2 XOSCMD1 XOSCMD0 Reserved Bit7 Bit6 Bit5 Bit 7: XTLVLD: Crystal Oscillator Valid Flag. (Valid only when XOSCMD = 11x.) 0: Crystal Oscillator ...
Page 176
C8051F360/1/2/3/4/5/6/7/8/9 16.5. External Crystal Example If a crystal or ceramic resonator is used as an external oscillator source for the MCU, the circuit should be configured as shown in Figure 16.1, Option 1. The External Oscillator Frequency Control value (XFCN) ...
Page 177
External RC Example network is used as an external oscillator source for the MCU, the circuit should be configured as shown in Figure 16.1, Option 2. The capacitor should be no greater than 100 pF; however ...
Page 178
C8051F360/1/2/3/4/5/6/7/8/9 16.8. Phase-Locked Loop (PLL) A Phase-Locked-Loop (PLL) is included, which is used to multiply the internal oscillator or an external clock source to achieve higher CPU operating frequencies. The PLL circuitry is designed to produce an output frequency between ...
Page 179
Powering on and Initializing the PLL To set up and use the PLL as the system clock after power-up of the device, the following procedure should be implemented: Step 1. Ensure that the reference clock to be used (internal ...
Page 180
C8051F360/1/2/3/4/5/6/7/8/9 To shut down the PLL, the system clock should be switched to the internal oscillator or a stable external clock source, using the CLKSEL register. Next, disable the PLL by setting PLLEN (PLL0CN.1) to ‘0’. Finally, the PLL can ...
Page 181
SFR Definition 16.8. PLL0MUL: PLL Clock Scaler SFR Page: F SFR Address: 0xB1 R/W R/W R/W PLLN7 PLLN6 PLLN5 Bit7 Bit6 Bit5 Bits 7–0: PLLN7–0: PLL Multiplier. These bits select the multiplication factor of the divided PLL reference clock. When ...
Page 182
C8051F360/1/2/3/4/5/6/7/8/9 Table 16.3. PLL Frequency Characteristics –40 to +85 °C unless otherwise specified. Parameter Input Frequency (Divided Reference Frequency) PLL Output Frequency *Note: The maximum operating frequency of the C8051F366/7/8 MHz. Table 16.4. PLL Lock Timing Characteristics –40 ...
Page 183
Port Input/Output Digital and analog resources are available through I/O pins. On the largest devices (C8051F360/3), port pins are organized as four byte-wide Ports and one 7-bit-wide Port. On the other devices (C8051F361/2/4/5/6/7/8/9), port pins are ...
Page 184
C8051F360/1/2/3/4/5/6/7/8/9 /WEAK-PULLUP PUSH-PULL /PORT-OUTENABLE PORT-OUTPUT Analog Select ANALOG INPUT PORT-INPUT Figure 17.2. Port I/O Cell Block Diagram 184 VIO VIO (WEAK) GND Rev. 1.0 PORT PAD ...
Page 185
Priority Crossbar Decoder The Priority Crossbar Decoder (Figure 17.3) assigns a priority to each I/O function, starting at the top with UART0. When a digital resource is selected, the least-significant unassigned Port pin is assigned to that resource (excluding ...
Page 186
C8051F360/1/2/3/4/5/6/7/8 Signals (32- and 28- pin) SF Signals (48-pin) PIN I TX0 RX0 TX0 RX0 SCK MISO MOSI NSS* SDA SCL CP0 CP0A CP1 CP1A /SYSCLK CEX0 CEX1 CEX2 CEX3 ...
Page 187
Port I/O Initialization Port I/O initialization consists of the following steps: Step 1. Select the input mode (analog or digital) for all Port pins, using the Port Input Mode register (PnMDIN). Step 2. Select the output mode (open-drain or ...
Page 188
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 17.1. XBR0: Port I/O Crossbar Register 0 SFR Page: F SFR Address: 0xE1 R/W R/W R/W CP1AE CP1E CP0AE Bit7 Bit6 Bit5 Bit 7: CP1AE: Comparator1 Asynchronous Output Enable 0: Asynchronous CP1 unavailable at Port pin. 1: ...
Page 189
SFR Definition 17.2. XBR1: Port I/O Crossbar Register 1 SFR Page: F SFR Address: 0xE2 R/W R/W R/W WEAKPUD XBARE T1E Bit7 Bit6 Bit5 Bit 7: WEAKPUD: Port I/O Weak Pullup Disable. 0: Weak Pullups enabled (except for Ports whose ...
Page 190
C8051F360/1/2/3/4/5/6/7/8/9 17.3. General Purpose Port I/O Port pins that remain unassigned by the Crossbar and are not used by analog peripherals can be used for general purpose I/O. Ports P0-P3 are accessed through corresponding special function registers (SFRs) that are ...
Page 191
SFR Definition 17.4. P0MDIN: Port0 Input Mode SFR Page: F SFR Address: 0xF1 R/W R/W R/W Bit7 Bit6 Bit5 Bits 7–0: Analog Input Configuration Bits for P0.7-P0.0 (respectively). Port pins configured as analog inputs have their weak pullup, digital driver, ...
Page 192
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 17.6. P0SKIP: Port0 Skip SFR Page: F SFR Address: 0xD4 R/W R/W R/W Bit7 Bit6 Bit5 Bits 7–0: P0SKIP[7:0]: Port0 Crossbar Skip Enable Bits. These bits select Port pins to be skipped by the Crossbar Decoder. Port ...
Page 193
SFR Definition 17.9. P1: Port1 SFR Page: all pages (bit addressable) SFR Address: 0x90 R/W R/W R/W P1.7 P1.6 P1.5 Bit7 Bit6 Bit5 Bits 7–0: P1.[7:0] Write - Output appears on I/O pins per Crossbar Registers. 0: Logic Low Output. ...
Page 194
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 17.11. P1MDOUT: Port1 Output Mode SFR Page: F SFR Address: 0xA5 R/W R/W R/W Bit7 Bit6 Bit5 Bits 7–0: Output Configuration Bits for P1.7-P1.0 (respectively): ignored if corresponding bit in regis- ter P1MDIN is logic ‘0’. 0: ...
Page 195
SFR Definition 17.14. P1MASK: Port1 Mask SFR Page: 0 SFR Address: 0xE2 R/W R/W R/W Bit7 Bit6 Bit5 Bits 7–0: P1MASK[7:0]: Port1 Mask Value. These bits select which Port pins will be compared to the value stored in P1MAT. 0: ...
Page 196
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 17.16. P2MDIN: Port2 Input Mode SFR Page: F SFR Address: 0xF3 R/W R/W R/W Bit7 Bit6 Bit5 Bits 7–0: Analog Input Configuration Bits for P2.7-P2.0 (respectively). Port pins configured as analog inputs have their weak pullup, digital ...
Page 197
SFR Definition 17.18. P2SKIP: Port2 Skip SFR Page: F SFR Address: 0xD6 R/W R/W R/W Bit7 Bit6 Bit5 Bits 7–0: P2SKIP[7:0]: Port2 Crossbar Skip Enable Bits. These bits select Port pins to be skipped by the Crossbar Decoder. Port pins ...
Page 198
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 17.21. SFR Page: all pages (bit addressable) SFR Address: 0xB0 R/W R/W R/W P3.7 P3.6 P3.5 Bit7 Bit6 Bit5 Bits 7–0: P3.[7:0] Write - Output appears on I/O pins per Crossbar Registers. 0: Logic Low Output. 1: ...
Page 199
SFR Definition 17.23. SFR Page: F SFR Address: 0xAF R/W R/W R/W Bit7 Bit6 Bit5 Bits 7–0: Output Configuration Bits for P3.7-P3.0 (respectively): ignored if corresponding bit in regis- ter P3MDIN is logic ‘0’. 0: Corresponding P3.n Output is open-drain. ...
Page 200
C8051F360/1/2/3/4/5/6/7/8/9 SFR Definition 17.25. SFR Page: all pages SFR Address: 0xB5 R R/W R/W – P4.6 P4.5 Bit7 Bit6 Bit5 Bit 7: UNUSED. Read = 0b. Write = don’t care. Bits 6–0: P4.[6:0] Write - Output appears on I/O pins ...