S3C7238 데이터 시트보기 (PDF) - Samsung
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S3C7238 Datasheet PDF : 36 Pages
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S3C7238/P7238/C7235/P7235
PRODUCT OVERVIEW
PIN DESCRIPTIONS
Table 1-1. S3C7238/C7235 Pin Descriptions
Pin Name Pin
Type
Description
Number
Share
Pin
P0.0
P0.1
P0.2
P0.3
I 4-bit input port.
I/O 1-bit and 4-bit read and test are possible.
I/O 4-bit pull-up resistors are software assignable.
I
20 INT4
21 SCK
22 SO
23 SI
P1.0
P1.1
P1.2
P1.3
I 4-bit input port.
1-bit and 4-bit read and test are possible.
4-bit pull-up resistors are software assignable.
24 INT0
25 INT1
26 INT2
27 TCL0
P2.0
P2.1
P2.2
P2.3
I/O 4-bit I/O port.
28 TCLO0
1-bit and 4-bit read/write and test are possible. 29 –
4-bit pull-up resistors are software assignable.
30 CLO
31 BUZ
P3.0
P3.1
P3.2
P3.3
I/O 4-bit I/O port.
1-bit and 4-bit read/write and test are possible.
Each individual pin can be specified as input
or output. 4-bit pull-up resistors are software
assignable.
32 LCDCK
33 LCDSY
34
35
P4.0–
I/O 4-bit I/O ports. N-channel open-drain output up 36–43
–
P4.3
to 5 V. 1-, 4-, and 8-bit read/write and test are
P5.0–
possible. Ports 4 and 5 can be paired to
P5.3
support 8-bit data transfer. 4-bit pull-up
resistors are software assignable.
P6.0–
P6.3
P7.0–
P7.3
I/O 4-bit I/O ports. Port 6 pins are individually
44–51 KS0–KS3
software configurable as input or output. 1-bit
KS4–KS7
and 4-bit read/write and test are possible. 4-bit
pull-up resistors are software assignable. Ports
6 and 7 can be paired to enable 8-bit data
transfer.
P8.0–
P8.7
O Output port for 1-bit data (for use as CMOS
driver only)
59–52 SEG24–
SEG31
SEG0–
SEG23
O LCD segment signal output
3–1,
–
80–60
SEG24–
SEG31
O LCD segment signal output
59–52 P8.0–P8.7
COM0–
COM3
O LCD common signal output
4–7
–
VLC0–VLC2 – LCD power supply. Voltage dividing resistors
are assignable by mask option
9–11 SCLK
SDAT
BIAS
– LCD power control
8
–
LCDCK
I/O LCD clock output for display expansion
32 P3.0
Reset
Value
Input
Input
Circuit
Type
A-1
D*
D*
A-1
A-1
Input
D
Input
D
Input
E
Input
D*
Output H-16
Output H-15
Output H-16
Output H-15
–
–
–
–
Input
D
1-5
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