s3c72m9 Samsung Semiconductor, Inc., s3c72m9 Datasheet - Page 240

• Manufacturer Part Number: s3c72m9
• Description: The S3c72m5/s3c72m7/s3c72m9 Single-chip Cmos Microcontroller Has Been Designed For High Performance Using Samsung S
• Manufacturer: Samsung Semiconductor, Inc.

I/O PORTS
10-2
10, 11
12, 13
Instruction Type
Port
6, 7
8, 9
0
1
2
3
4
1-bit output
4-bit output
8-bit output
1-bit input
4-bit input
8-bit input
1-bit test
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
BTST
BITR
LDB
LD
LD
LD
LD
Pins
Example
4
4
4
4
3
8
8
8
8
Table 10-2. Port Pin Status During Instruction Execution
C,P1.3
EA,P6
P6,EA
A,P7
P2,A
P0.1
P2.3
P10.0–P10.3
P11.0–P11.3
P12.0–P12.3
P13.0–P13.3
Pin Names
P0.0–P0.3
P1.0–P1.3
P2.0–P2.3
P3.0–P3.3
P4.0–P4.2
P6.0–P6.3
P7.0–P7.3
P8.0–P8.3
P9.0–P9.3
Table 10-1. I/O Port Overview
Input or test data at each pin
Output latch contents undefined
Transfer accumulator data to the
output latch
Input Mode Status
Address
FFAH
FFBH
FFCH
FFDH
FF0H
FF1H
FF2H
FF3H
FF4H
FF6H
FF7H
FF8H
FF9H
S3C72M5/C72M7/C72M9/P72M9 (Preliminary Spec)
4-bit I/O port.
1-bit and 4-bit read/write and test is possible.
Individual pins are software configurable as input
or output.
Individual pins are software configurable as
open-drain or push-pull output.
4-bit pull-up resistors are software assignable;
pull-up resistors are automatically disabled for
output pins.
4-bit input port.
1-bit and 4-bit read and test is possible.
4-bit pull-up resistors are assignable.
Same as port 0
Same as port 0
Same as port 0, except that port 4 is 3-bit I/O
port and configurabled as analog input pin.
4-bit I/O ports.
1-, 4-bit or 8-bit read/write and test is possible.
Individual pins are software configurable as input
or output. 4 pins are software configurable as
open-drain or push-pull output.
4-bit pull-up resistors are software assignable;
pull-up resistors are automatically disabled for
output pins.
Same as P6 and P7.
Same as P6 and P7.
Same as P6 and P7.
Input or test data at output latch
Output pin status is modified
Transfer accumulator data to the
output pin
Function Description
Output Mode Status