st2032a Sitronix Technology Corporation, st2032a Datasheet - Page 13

• Manufacturer Part Number: st2032a
• Description: 8 Bit Microcontroller With 32k Bytes Rom
• Manufacturer: Sitronix Technology Corporation

1
10.1 Description
ST2032A can supply total 24 GPIOs divided into three I/O ports,
Port-A, Port-B, and Port-C. Besides I/O function, Port-B/C can
also be used as LCD segment drives. For detail pin assignment,
please refer to TABLE 10-1
Ver 2.4
1
0
0
.
PORT NAME
.
I
I
/
Port-A
Port-B
Port-C
/
O
O
P
P
O
O
R
R
T
T
SEG28/PB0
SEG29/PB1
SEG30/PB2
SEG31/PB3
SEG32/PB4
SEG33/PB5
SEG34/PB6
SEG35/PB7
SEG20/PC0
SEG21/PC1
SEG22/PC2
SEG23/PC3
SEG24/PC4
SEG25/PC5
SEG26/PC6
SEG27/PC7
PAD NAME
PA0/INTX
S
S
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PAD NUMBER
10
12
13
14
15
16
64
65
66
67
68
69
70
71
56
57
58
59
60
61
62
63
11
9
TABLE 10-1 I/O Description
PIN TYPE
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
13/54
NOTE
to minimize standby current
Programmable input/output pin
Programmable input/output pin
Programmable input/output pin
: all of unused input pins should be pulled up
FEATURE
ST2032A
9/13/07