R8C/20 Group, R8C/21 Group 1. Overview
Rev.2.00 Aug 27, 2008 Page 9 of 458
REJ09B0250-0200
NOTE:
1. Can be assigned to the pin in parentheses by a program.
Table 1.6 Pin Name Information by Pin Number
Pin
Number
Control Pin Port
I/O Pin Functions for of Peripheral Modules
Interrupt Timer
Serial
Interface
Clock Synchronous
Serial I/O
with Chip Select
I
2
C Bus
Interface
A/D
Converter
1 P3_5 SSCK SCL
2 P3_3 SSI
3P3_4
SCS
SDA
4MODE
5P4_3
6P4_4
7
RESET
8XOUTP4_7
9 VSS/AVSS
10 XIN P4_6
11 VCC/AVCC
12 P2_7 TRDIOD1
13 P2_6 TRDIOC1
14 P2_5 TRDIOB1
15 P2_4 TRDIOA1
16 P2_3 TRDIOD0
17 P2_2 TRDIOC0
18 P2_1 TRDIOB0
19 P2_0 TRDIOA0/TRDCLK
20 P1_7
INT1
TRAIO
21 P1_6 CLK0
22 P1_5
(INT1
)
(1)
(TRAIO)
(1)
RXD0
23 P1_4 TXD0
24 P1_3
KI3
AN11
25 P4_5
INT0
INT0
26 P6_6
INT2
TXD1
27 P6_7
INT3
RXD1
28 P1_2
KI2
AN10
29 P1_1
KI1
AN9
30 P1_0
KI0
AN8
31 P3_1 TRBO
32 P3_0 TRAO
33 P6_5
34 P6_4
35 P6_3
36 P0_7 AN0
37 P0_6 AN1
38 P0_5 AN2
39 P0_4 AN3
40 VREF P4_2
41 P6_0 TREO
42 P6_2
43 P6_1
44 P0_3 AN4
45 P0_2 AN5
46 P0_1 AN6
47 P0_0 AN7
48 P3_7 SSO
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