R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 12

• Manufacturer Part Number: R5F21334CNFP#U0
• Description: MCU 1KB FLASH 16K ROM 32-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/33Cr

Specifications of R5F21334CNFP#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: 27
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K 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: 32-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
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
9.4.1
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
9.9.1
9.9.2
9.9.3
9.9.4
Bus ................................................................................................................................................ 97
Clock Generation Circuit ............................................................................................................... 99
Port Settings ............................................................................................................................................ 83
Unassigned Pin Handling ........................................................................................................................ 96
Overview ................................................................................................................................................. 99
Registers ................................................................................................................................................ 102
XIN Clock ............................................................................................................................................. 111
On-Chip Oscillator Clock ...................................................................................................................... 112
XCIN Clock ........................................................................................................................................... 113
CPU Clock and Peripheral Function Clock ........................................................................................... 114
Power Control ........................................................................................................................................ 116
Oscillation Stop Detection Function ..................................................................................................... 125
Notes on Clock Generation Circuit ....................................................................................................... 129
System Clock Control Register 0 (CM0) .......................................................................................... 102
System Clock Control Register 1 (CM1) .......................................................................................... 103
System Clock Control Register 3 (CM3) .......................................................................................... 104
Oscillation Stop Detection Register (OCD) ...................................................................................... 105
High-Speed On-Chip Oscillator Control Register 7 (FRA7) ............................................................ 105
High-Speed On-Chip Oscillator Control Register 0 (FRA0) ............................................................ 106
High-Speed On-Chip Oscillator Control Register 1 (FRA1) ............................................................ 106
High-Speed On-Chip Oscillator Control Register 2 (FRA2) ............................................................ 107
Clock Prescaler Reset Flag (CPSRF) ................................................................................................ 107
High-Speed On-Chip Oscillator Control Register 4 (FRA4) ............................................................ 108
High-Speed On-Chip Oscillator Control Register 5 (FRA5) ............................................................ 108
High-Speed On-Chip Oscillator Control Register 6 (FRA6) ............................................................ 108
High-Speed On-Chip Oscillator Control Register 3 (FRA3) ............................................................ 108
Voltage Detect Register 2 (VCA2) ................................................................................................... 109
Low-Speed On-Chip Oscillator Clock .............................................................................................. 112
High-Speed On-Chip Oscillator Clock ............................................................................................. 112
System Clock .................................................................................................................................... 114
CPU Clock ........................................................................................................................................ 114
Peripheral Function Clock (f1, f2, f4, f8, and f32) ........................................................................... 114
fOCO ................................................................................................................................................. 114
fOCO40M ......................................................................................................................................... 114
fOCO-F ............................................................................................................................................. 114
fOCO-S ............................................................................................................................................. 115
fOCO128 ........................................................................................................................................... 115
fC, fC4, and fC32 .............................................................................................................................. 115
fOCO-WDT ...................................................................................................................................... 115
Standard Operating Mode ................................................................................................................. 116
Wait Mode ........................................................................................................................................ 118
Stop Mode ......................................................................................................................................... 122
How to Use Oscillation Stop Detection Function ............................................................................. 126
Stop Mode ......................................................................................................................................... 129
Wait Mode ........................................................................................................................................ 129
Oscillation Stop Detection Function ................................................................................................. 130
Oscillation Circuit Constants ............................................................................................................ 130
A - 3