R8C/33C Pin Usage

Pin

Control

Port

IRQ

Timer

Serial

SPI

I2C

AD/DA

HDR

USB

LEDs

1

P4_2

VREF

2

MODE

CBUS2

3

RESET

DTR

4

XOUT

P4_7

5

VSS

6

XIN

P4_6

7

VCC

8

P3_7

TRAO

RXD2/TXD2

SSO

SDA

9

P3_5

TRCIOD

CLK2

SSCK

SCL

10

P3_4

TRCIOC

RXD2/TXD2

SSI

IVREF3

11

P3_3

INT3

TRCCLK

CTS2/RTS2

SCS

IVCMP3

12

P2_2

TRCIOD

R

13

P2_1

TRCIOC

G

14

P2_0

INT1

TRCIOB

B

15

P3_1

TRBO

16

P4_5

INT0

RXD2/SCL2

ADTRG

17

P1_7

INT1

TRAIO

IVCMP1

CTS

18

P1_6

CLK0

IVREF1

RTS

19

RXD0

P1_5

INT1

TRAIO

RXD0

RXD

20

TXD0

P1_4

TRCCLK

TXD0

TXD

21

P1_3

KI3

TRBO/TRCIOC

AN11

LED

22

P1_2

KI2

TRCIOB

AN10

LED

23

P1_1

KI1

TRCIOA/TRCTRG

AN9

LED

24

P1_0

KI0

TRCIOD

AN8

LED

25

P0_7

TRCIOC

AN0/DA1

26

P0_6

TRCIOD

AN1/DA0

27

P0_5

TRCIOB

AN2

28

P0_4

TREO/TRCIOB

AN3

29

P0_3

TRCIOB

CLK1

AN4

30

P0_2

TRCIOA/TRCTRG

RXD1

AN5

31

P0_1

TRCIOA/TRCTRG

TXD1

AN6

32

P0_0

TRCIOA/TRCTRG

AN7