R5F21356CNFP#U0 Renesas Electronics America, R5F21356CNFP#U0 Datasheet - Page 12

• Manufacturer Part Number: R5F21356CNFP#U0
• Description: MCU 1KB FLASH 32K ROM 52-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/35Cr

Specifications of R5F21356CNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 47
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 52-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

8.
9.
7.5
7.6
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
7.4.22
7.4.23
7.4.24
9.2.1
9.2.2
9.2.3
9.2.4
9.2.5
9.2.6
9.2.7
9.2.8
9.2.9
9.2.10
9.2.11
9.2.12
9.2.13
9.2.14
9.2.15
9.4.1
9.4.2
9.6.1
9.6.2
9.6.3
9.6.4
9.6.5
9.6.6
9.6.7
9.6.8
9.6.9
9.6.10
9.7.1
9.7.2
9.7.3
9.8.1
Bus .............................................................................................................................................. 114
Clock Generation Circuit ............................................................................................................. 116
Port Settings ............................................................................................................................................ 92
Unassigned Pin Handling ...................................................................................................................... 113
Overview ............................................................................................................................................... 116
Registers ................................................................................................................................................ 119
XIN Clock ............................................................................................................................................. 130
On-Chip Oscillator Clock ...................................................................................................................... 131
XCIN Clock ........................................................................................................................................... 132
CPU Clock and Peripheral Function Clock ........................................................................................... 133
Power Control ........................................................................................................................................ 135
Oscillation Stop Detection Function ..................................................................................................... 144
Notes on Clock Generation Circuit ....................................................................................................... 148
Drive Capacity Control Register 1 (DRR1) ........................................................................................ 89
Input Threshold Control Register 0 (VLT0) ....................................................................................... 90
Input Threshold Control Register 1 (VLT1) ....................................................................................... 91
System Clock Control Register 0 (CM0) .......................................................................................... 119
System Clock Control Register 1 (CM1) .......................................................................................... 120
System Clock Control Register 3 (CM3) .......................................................................................... 121
Oscillation Stop Detection Register (OCD) ...................................................................................... 123
High-Speed On-Chip Oscillator Control Register 7 (FRA7) ............................................................ 123
High-Speed On-Chip Oscillator Control Register 0 (FRA0) ............................................................ 124
High-Speed On-Chip Oscillator Control Register 1 (FRA1) ............................................................ 124
High-Speed On-Chip Oscillator Control Register 2 (FRA2) ............................................................ 125
Clock Prescaler Reset Flag (CPSRF) ................................................................................................ 125
High-Speed On-Chip Oscillator Control Register 4 (FRA4) ............................................................ 126
High-Speed On-Chip Oscillator Control Register 5 (FRA5) ............................................................ 126
High-Speed On-Chip Oscillator Control Register 6 (FRA6) ............................................................ 126
High-Speed On-Chip Oscillator Control Register 3 (FRA3) ............................................................ 126
Voltage Detect Register 2 (VCA2) ................................................................................................... 127
I/O Function Pin Select Register (PINSR) ....................................................................................... 128
Low-Speed On-Chip Oscillator Clock .............................................................................................. 131
High-Speed On-Chip Oscillator Clock ............................................................................................. 131
System Clock .................................................................................................................................... 133
CPU Clock ........................................................................................................................................ 133
Peripheral Function Clock (f1, f2, f4, f8, and f32) ........................................................................... 133
fOCO ................................................................................................................................................. 133
fOCO40M ......................................................................................................................................... 133
fOCO-F ............................................................................................................................................. 133
fOCO-S ............................................................................................................................................. 134
fOCO128 ........................................................................................................................................... 134
fC, fC2, fC4, and fC32 ...................................................................................................................... 134
fOCO-WDT ...................................................................................................................................... 134
Standard Operating Mode ................................................................................................................. 135
Wait Mode ........................................................................................................................................ 137
Stop Mode ......................................................................................................................................... 141
How to Use Oscillation Stop Detection Function ............................................................................. 145
A - 3