Pin No.
Terminal Name
I/O Setting
Description
1
P12
O
LED-K6
2
P11
I
Not used Vss Connection
3
P10
I
Not used Vss Connection
4
P47/KR07
O
LED-C1
5
P46/KR06
O
LED-C2
6
P45/KR05
O
LED-C3
7
P44/KR04
O
LED-C4
8
P43/KR03
I
Not used Vss Connection
9
P42/KR02
I
KEY-IN3
10
P41/KR01
I
KEY-IN2
11
P40/KR00
I
KEY-IN1
12
P31/BZO90
I
Not used Vss Connection
13
IC0
I
Vpp
14
X2
O
OSC(4MHz)
15
X1
I
OSC(4MHz)
16
Vss0
-
Vss
17
Vdd0
-
Vdd
18
XT2
-
Not used Open
19
XT1
I
Not used Vss Connection
20
RESET/
I
Reset/
21
P30/TO90
I
Not used Vss Connection
22
P27/TI80/TO80
I
Not used Vss Connection
23
P26/INTP2/CPT90
I
Not used Vss Connection
24
P25/INTP1
I
Not used Vss Connection
25
P24/INTP0
I
Not used Vss Connection
26
P23/SS20/
I
Rx-RDY
27
P22/SI20/RxD20
I
RxD
28
P21/SO20/TxD20
O
TxD
29
P20/SCK20//
ASCK20
I
SCK
30
P07
I
Not used Open
31
P06
I
Not used Open
32
P05
I
Not used Open
33
P04
I
Not used Vss Connection