C8051F988-GM Silicon Laboratories Inc, C8051F988-GM Datasheet - Page 173

• Manufacturer Part Number: C8051F988-GM
• Description: IC MCU 8BIT 4KB FLASH 24QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F9xxr

Specifications of C8051F988-GM

• Program Memory Type: FLASH
• Program Memory Size: 4KB (4K x 8)
• Package / Case: 24-UQFN Exposed Pad, 24-HUQFN
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F9x
• Core: 8051
• Data Ram Size: 512 B
• Interface Type: I2C, SMBus, Enhanced UART, Enhanced SPI
• Maximum Clock Frequency: 7 KHz
• Number Of Programmable I/os: 17
• Number Of Timers: 4
• Operating Supply Voltage: 2.4 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F996DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 10 Channel
• On-chip Dac: 10 bit, 4 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1959-5

SFR Definition 16.1. CRC0CN: CRC0 Control
SFR Page = All; SFR Address = 0x84
Note: Upon initiation of an automatic CRC calculation, the three cycles following a write to CRC0CN that initiate a
Name
Reset
Bit
7:4
Type
3
2
1
0
Bit
CRC operation must only contain instructions which execute in the same number of cycles as the number of
bytes in the instruction. An example of such an instruction is a 3-byte MOV that targets the CRC0FLIP
register. When programming in C, the dummy value written to CRC0FLIP should be a non-zero value to
prevent the compiler from generating a 2-byte MOV instruction.
CRC0PNT
CRC0INIT
CRC0VAL
Unused
Unused
Name
R
7
0
Read = 0001b; Write = Don’t Care.
CRC0 Result Initialization Bit.
Writing a 1 to this bit initializes the entire CRC result based on CRC0VAL.
CRC0 Set Value Initialization Bit.
This bit selects the set value of the CRC result.
0: CRC result is set to 0x00000000 on write of 1 to CRC0INIT.
1: CRC result is set to 0xFFFFFFFF on write of 1 to CRC0INIT.
Read = 0b; Write = Don’t Care.
CRC0 Result Pointer.
Specifies the byte of the CRC result to be read/written on the next access to
CRC0DAT. The value of these bits will auto-increment upon each read or write.
0: CRC0DAT accesses bits 7–0 of the 16-bit CRC result.
1: CRC0DAT accesses bits 15–8 of the 16-bit CRC result.
R
6
0
R
5
0
Rev. 1.0
R
4
1
C8051F99x-C8051F98x
CRC0INIT CRC0VAL
Function
R/W
3
0
R/W
2
0
R
1
0
CRC0PNT
R/W
0
0
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