R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 12

• Manufacturer Part Number: R5F21324CNSP#U0
• Description: MCU 1KB FLASH 16K ROM 20-LSSOP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/32Cr

Specifications of R5F21324CNSP#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: 15
• 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 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-LSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

8.
9.
10.
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
10.1
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 ................................................................................................................................................ 86
Clock Generation Circuit ............................................................................................................... 88
Protection .................................................................................................................................... 121
Overview ................................................................................................................................................. 88
Registers .................................................................................................................................................. 91
XIN Clock ............................................................................................................................................. 101
On-Chip Oscillator Clock ...................................................................................................................... 102
XCIN Clock ........................................................................................................................................... 103
CPU Clock and Peripheral Function Clock ........................................................................................... 104
Power Control ........................................................................................................................................ 106
Oscillation Stop Detection Function ..................................................................................................... 115
Notes on Clock Generation Circuit ....................................................................................................... 119
Register .................................................................................................................................................. 121
System Clock Control Register 0 (CM0) ............................................................................................ 91
System Clock Control Register 1 (CM1) ............................................................................................ 92
System Clock Control Register 3 (CM3) ............................................................................................ 93
Oscillation Stop Detection Register (OCD) ........................................................................................ 95
High-Speed On-Chip Oscillator Control Register 7 (FRA7) .............................................................. 95
High-Speed On-Chip Oscillator Control Register 0 (FRA0) .............................................................. 96
High-Speed On-Chip Oscillator Control Register 1 (FRA1) .............................................................. 96
High-Speed On-Chip Oscillator Control Register 2 (FRA2) .............................................................. 97
Clock Prescaler Reset Flag (CPSRF) .................................................................................................. 97
High-Speed On-Chip Oscillator Control Register 4 (FRA4) .............................................................. 98
High-Speed On-Chip Oscillator Control Register 5 (FRA5) .............................................................. 98
High-Speed On-Chip Oscillator Control Register 6 (FRA6) .............................................................. 98
High-Speed On-Chip Oscillator Control Register 3 (FRA3) .............................................................. 98
Voltage Detect Register 2 (VCA2) ..................................................................................................... 99
Low-Speed On-Chip Oscillator Clock .............................................................................................. 102
High-Speed On-Chip Oscillator Clock ............................................................................................. 102
System Clock .................................................................................................................................... 104
CPU Clock ........................................................................................................................................ 104
Peripheral Function Clock (f1, f2, f4, f8, and f32) ........................................................................... 104
fOCO ................................................................................................................................................. 104
fOCO40M ......................................................................................................................................... 104
fOCO-F ............................................................................................................................................. 104
fOCO-S ............................................................................................................................................. 105
fOCO128 ........................................................................................................................................... 105
fC, fC4, and fC32 .............................................................................................................................. 105
fOCO-WDT ...................................................................................................................................... 105
Standard Operating Mode ................................................................................................................. 106
Wait Mode ........................................................................................................................................ 108
Stop Mode ......................................................................................................................................... 112
How to Use Oscillation Stop Detection Function ............................................................................. 116
Stop Mode ......................................................................................................................................... 119
Wait Mode ........................................................................................................................................ 119
Oscillation Stop Detection Function ................................................................................................. 120
Oscillation Circuit Constants ............................................................................................................ 120
A - 3