P9658 datasheet(6/27 Pages) SAMSUNG

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PRODUCT OVERVIEW

S3C9654/C9658/P9658

1-6

Table 1-1. Signal Descriptions

Pin Names

Type

Pin Description

Circuit

Number

Numbers

Pins

P0.0

I/O

Bit-programmable I/O port for Schmitt trigger

input or n-ch open drain output (50 mA).

Pull-up resistor is assignable to input pin by

software and is automatically disabled for

output pin. Port 0 can be individually configured

as external interrupt input.

INT0

P0.1–P0.5

I/O

Bit-programmable I/O port for Schmitt trigger

input or push-pull output. Pull-up resistors

individually assignable to input pins by software

and are automatically disabled for output pins.

Port 0 can be individually configured as

external interrupt inputs.

1, 10, 11,

12, 20

INT0

P1.0–P1.5

I/O

Bit-programmable I/O port for Schmitt trigger

input or push-pull output. Pull-up resistors are

individually assignable to input pins by

software. Port 1 can be configured as

comparator input or external interrupt inputs.

Pull-down resistors are individually assignable.

(in comparator input)

4–9

CIN0-5

INT1

P2.0/D-

–

P2.1/D+

I/O

Bit-programmable I/O port for Schmitt trigger

input or n-ch open drain output. Pull-up

resistors are individually assignable to input

pins by software and are automatically disabled

for output pins. Port 2 can be individually

configured as external interrupt inputs. Also it

can be configured as an USB ports.

17, 18

INT2

OUT, XIN

–

System clock input and output pin

(crystal/ceramic oscillator, or external clock

source)

–

14, 15

–

INT0

External interrupt for bit-programmable port 0

1, 3, 10,

11, 12, 20

Port 0

INT1

External interrupt for bit-programmable port 1

4–9

Port 1

INT2

External interrupt for bit-programmable port 2

17, 18

Port 2

–

Power input pin

–

SS is a ground power for CPU core.

–

RESET

Reset input pin (Pull-up register embedded)

–

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