R8C23 datasheet(49/52 Pages) RENESAS

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REVISION HISTORY

R8C/22 Group, R8C/23 Group Datasheet

Rev.

Date

Description

Page

Summary

0.10

Mar 08, 2005

−

First Edition issued

0.20

Sep 29, 2005

−

Words standardized

- Clock synchronous serial interface

→ Clock synchronous serial I/O

- Chip-select clock synchronous interface(SSU)

→ Clock synchronous serial I/O with chip select

- I2C bus interface(IIC)

→ I2C bus interface

2, 3

Table1.1 R8C/22 Group Performance, Table1.2 R8C/23 Group

Performance

Serial Interface revised:

- Clock Synchronous Serial Interface: 1 channel

I2C bus Interface (3), Clock synchronous serial I/O with chip select

- Power-On Reset Circuit added

- Power Consumption value determined

5, 6

Table 1.3 Product Information of R8C/22 Group, Table 1.4 Product

Information of R8C/23 Group

Date revised.

Figure 1.4 Pin Assignment

Pin name revised:

- P3_5/SSCK(/SCL)

→ P3_5/ SCL/SSCK

- P3_4/SCS(/SDA)

→ P3_4/ SDA /SCS

- VSS

→ VSS/AVSS

- VCC

→ VCC/AVCC

- P1_5/RXD0/(TRAIO/INT1)

→ P1_5/RXD0/(TRAIO)/(INT1)

- P6_6/INT2/(TXD1)

→ P6_6/INT2/TXD1

- P6_7/INT3/(RXD1)

→ P6_7/INT3/RXD1

- NOTE2 added

Table 1.5 Pin Description

- Analog Power Supply Input: line added

- I2C Bus Interface (IIC)

→ I2C Bus Interface

- SSU

→ Clock Synchronous Serial I/O with Chip Select

Table 1.6 Pin Name Information by Pin Number revised

- Pin Number 1: (SCL)

→ SCL

- Pin Number 2: (SDA)

→ SDA

- Pin Number 9: VSS

→ VSS/AVSS

- Pin Number 11: VCC

→ VCC/AVCC

- Pin Number 26: (TXD1)

→ TXD1

- Pin Number 27: (RXD1)

→ RXD1

Table 4.1 SFR Information (1) revised

- 0013h: XXXXXX00b

→ 00h

Table 4.3 SFR Information (3) revised

- 00BCh: 0000X000b

→ 00h/0000X000b

Table 4.4 SFR Information (4) revised

- 00D6h: 00000XXXb

→ 00h

- 00F5h: UART1 Function Select Register added

Table 4.5 SFR Information (5) revised

- 0104h: TRATR

→ TRA

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