S3C7235 datasheet(5/36 Pages) SAMSUNG

Part #	S3C7235

Description	The S3C7238/C7235 single-chip CMOS microcontroller has been designed for high performance using Samsungs newest 4-bit CPU core, SAM47 (Samsung Arrange

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Manufacturer	SAMSUNG [Samsung semiconductor]

Direct Link	http://www.samsung.com/Products/Semiconductor

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S3C7238/P7238/C7235/P7235

PRODUCT OVERVIEW

1-5

PIN DESCRIPTIONS

Table 1-1. S3C7238/C7235 Pin Descriptions

Pin Name

Type

Description

Number

Share

Reset

Value

Circuit

Type

P0.0

P0.1

P0.2

P0.3

I

I/O

I

4-bit input port.

1-bit and 4-bit read and test are possible.

4-bit pull-up resistors are software assignable.

20

21

22

23

INT4

SCK

SO

SI

Input

A-1

D *

A-1

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

25

26

27

INT0

INT1

INT2

TCL0

Input

A-1

P2.0

P2.1

P2.2

P2.3

I/O

4-bit I/O port.

1-bit and 4-bit read/write and test are possible.

4-bit pull-up resistors are software assignable.

28

29

30

31

TCLO0

–

CLO

BUZ

Input

D

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

33

34

35

LCDCK

LCDSY

Input

D

P4.0–

P4.3

P5.0–

P5.3

I/O

4-bit I/O ports. N-channel open-drain output up

to 5 V. 1-, 4-, and 8-bit read/write and test are

possible. Ports 4 and 5 can be paired to

support 8-bit data transfer. 4-bit pull-up

resistors are software assignable.

36–43

–

Input

E

P6.0–

P6.3

P7.0–

P7.3

I/O

4-bit I/O ports. Port 6 pins are individually

software configurable as input or output. 1-bit

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.

44–51

KS0–KS3

KS4–KS7

Input

D *

P8.0–

P8.7

O

Output port for 1-bit data (for use as CMOS

driver only)

59–52

SEG24–

SEG31

Output

H-16

SEG0–

SEG23

O

LCD segment signal output

3–1,

80–60

–

Output

H-15

SEG24–

SEG31

O

LCD segment signal output

59–52

P8.0–P8.7

Output

H-16

COM0–

COM3

O

LCD common signal output

4–7

–

Output

H-15

V

LC0–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

Input

D

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