st2024c Sitronix Technology Corporation, st2024c Datasheet - Page 12

• Manufacturer Part Number: st2024c
• Description: 24k 8-bit Single Chip Microcontroller
• Manufacturer: Sitronix Technology Corporation

1
ST2024C
SEGMENT-PORT and COMMON-PORT. In total, ST2024C
provides for a maximum of 18 I/O pins with both
SEGMENT-PORT and COMMON-PORT being programmed
as output ports. For detail pin assignment, please refer to
Table 9-6 :
Ver 2.2
1
0
0
.
PORT NAME
.
SEGMENT
COMMON
PORTA
PORTB
PORT
PORT
I
I
/
/
O
O
has
P
P
O
O
four
R
R
T
T
PAD NAME
I/O
PA0/INTX
S
S
COM4
COM5
COM6
COM7
SEG0
SEG1
SEG2
SEG3
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
ports,
PORT-A,
NUMBER
TABLE 10-6: I/O DESCRIPTION
PAD
18
17
16
15
14
13
12
11
10
43
44
22
21
20
19
6
5
4
3
9
PORT-B,
TYPE
PIN
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
I
I
12/54
NOTE
to minimize standby current
Programmable input/output pin
Programmable input/output pin
Input pin(Mask Option)
These 4 segment pins can be programmed as
output ports.
These 4 common pins can be programmed as output
ports.
: all of unused input pins should be pulled up
FEATURE
ST2024C
1/31/08