R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 10

• Manufacturer Part Number: R5F21238DFP#U0
• Description: IC R8C/23 MCU FLASH 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/23r

Specifications of R5F21238DFP#U0

• Core Size: 16/32-Bit
• Program Memory Size: 64KB (64K x 8)
• Peripherals: POR, Voltage Detect, WDT
• Core Processor: R8C
• Speed: 20MHz
• Connectivity: CAN, I²C, LIN, SIO, SSU, UART/USART
• Number Of I /o: 41
• Program Memory Type: FLASH
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• No. Of I/o's: 41
• Ram Memory Size: 3KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Embedded Interface Type: CAN, I2C, UART
• Rohs Compliant: Yes
• Cpu Family: R8C
• Device Core Size: 16b
• Frequency (max): 20MHz
• Interface Type: I2C/UART
• Total Internal Ram Size: 3KB
• # I/os (max): 41
• Number Of Timers - General Purpose: 5
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 3V
• On-chip Adc: 12-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 48
• Package Type: LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0K521237S000BE - KIT DEV RSK R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Eeprom Size: -
• Lead Free Status / Rohs Status: Compliant

SFR Page Reference ........................................................................................................................... B - 1
1.
2.
3.
4.
5.
6.
1.1
1.2
1.3
1.4
1.5
1.6
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
3.1
3.2
5.1
5.2
5.3
5.4
5.5
5.6
6.1
2.8.1
2.8.2
2.8.3
2.8.4
2.8.5
2.8.6
2.8.7
2.8.8
2.8.9
2.8.10
5.1.1
5.1.2
6.1.1
Overview ......................................................................................................................................... 1
Central Processing Unit (CPU) ..................................................................................................... 10
Memory ......................................................................................................................................... 13
Special Function Registers (SFRs) ............................................................................................... 15
Resets ........................................................................................................................................... 28
Voltage Detection Circuit .............................................................................................................. 35
Applications ............................................................................................................................................... 1
Performance Overview .............................................................................................................................. 2
Block Diagram .......................................................................................................................................... 4
Product Information .................................................................................................................................. 5
Pin Assignments ........................................................................................................................................ 7
Pin Functions ............................................................................................................................................. 8
Data Registers (R0, R1, R2 and R3) ....................................................................................................... 11
Address Registers (A0 and A1) ............................................................................................................... 11
Frame Base Register (FB) ....................................................................................................................... 11
Interrupt Table Register (INTB) .............................................................................................................. 11
Program Counter (PC) ............................................................................................................................. 11
User Stack Pointer (USP) and Interrupt Stack Pointer (ISP) .................................................................. 11
Static Base Register (SB) ........................................................................................................................ 11
Flag Register (FLG) ................................................................................................................................ 11
R8C/22 Group ......................................................................................................................................... 13
R8C/23 Group ......................................................................................................................................... 14
Hardware Reset ....................................................................................................................................... 31
Power-On Reset Function ....................................................................................................................... 33
Voltage Monitor 1 Reset ......................................................................................................................... 34
Voltage Monitor 2 Reset ......................................................................................................................... 34
Watchdog Timer Reset ............................................................................................................................ 34
Software Reset ......................................................................................................................................... 34
VCC Input Voltage .................................................................................................................................. 41
Carry Flag (C) ..................................................................................................................................... 11
Debug Flag (D) ................................................................................................................................... 11
Zero Flag (Z) ....................................................................................................................................... 11
Sign Flag (S) ....................................................................................................................................... 11
Register Bank Select Flag (B) ............................................................................................................ 11
Overflow Flag (O) .............................................................................................................................. 11
Interrupt Enable Flag (I) ..................................................................................................................... 12
Stack Pointer Select Flag (U) .............................................................................................................. 12
Processor Interrupt Priority Level (IPL) ............................................................................................. 12
Reserved Bit ........................................................................................................................................ 12
When Power Supply is Stable ............................................................................................................. 31
Power On ............................................................................................................................................ 31
Monitoring Vdet1 ............................................................................................................................... 41
Table of Contents
A - 1