S3C72N4 Samsung semiconductor, S3C72N4 Datasheet - Page 5

• Manufacturer Part Number: S3C72N4
• Description: The S3C72N2/C72N4 single-chip CMOS microcontroller has been designed for high performance using Samsungs newest 4-bit CPU core/ SAM47 (Samsung Arrange
• Manufacturer: Samsung semiconductor

S3C72N2/C72N4/P72N4
PIN DESCRIPTIONS
SEG0–SEG23
SEG24–SEG31
COM0–COM3
V
BIAS
LCDCK
P1.0
P1.1
P1.2
P1.3
P2.0
P2.1
P2.2
P2.3
P3.0
P3.1
P3.2
P3.3
P6.0–P6.3
P8.0–P8.7
LC0
Pin Name
–V
LC2
Type
Pin
I/O
I/O
I/O
I/O
O
O
O
O
–
–
I
4-bit input port.
1-bit or 4-bit read and test is possible.
4-bit pull-up resistors are software
assignable.
4-bit I/O port.
1-bit and 4-bit read/write and test is
possible.
4-bit pull-up resistors are software
assignable.
4-bit I/O port.
1-bit and 4-bit read/write and test is
possible.
Each individual pin can be specified as
input or output. 4-bit pull-up resistors are
software assignable.
4-bit I/O ports. Pins are individually
software configurable as input or output.
1-bit and 4-bit read/write and test is
possible. 4-bit pull-up resistors are
software assignable.
Output port for 1-bit data (for use as
CMOS driver only)
LCD segment signal output
LCD segment signal output
LCD common signal output
LCD power supply.
Built-in voltage dividing resistors
LCD power control
LCD clock output for display expansion
Table 1-1. S3C72N2/C72N4 Pin Descriptions
Description
Number
29–32
40–33
64–41
40–33
1–4
6–8
17
18
19
20
21
22
23
24
25
26
27
28
25
5
P8.0–P8.7
KS0–KS3
SEG24–
LCDCK
LCDSY
TCLO0
SEG31
Share
TCL0
INT0
INT1
INT2
CLO
P3.0
BUZ
Pin
–
–
–
–
–
PRODUCT OVERVIEW
Output
Output
Output
Output
Reset
Value
Input
Input
Input
Input
Input
–
–
Circuit
Type
H-1
H-1
A-4
D
D
D
H
H
D
–
–
1-5