PRODUCT OVERVIEWS3F80JB

Table 1-2. Pin Descriptions of 44-QFP

Pin

Pin

Pin Description

Circuit

44 Pin

Shared

Names

Type

 

Type

No.

Functions

P0.0–P0.7

I/O

I/O port with bit-programmable pins.

1

30–37

Ext. INT

 

 

Configurable to input or push-pull output

 

 

(INT0–INT3)

 

 

mode. Pull-up resistors can be assigned

 

 

(INT4)

 

 

by software. Pins can be assigned

 

 

 

 

 

individually as external interrupt inputs

 

 

 

 

 

with noise filters, interrupt enable/

 

 

 

 

 

disable, and interrupt pending control.

 

 

 

 

 

SED & R(note)circuit built in P0 for STOP

 

 

 

 

 

releasing.

 

 

 

P1.0–P1.7

I/O

I/O port with bit-programmable pins.

2

16

 

 

Configurable to input mode or output

 

20–26

 

 

 

mode. Pin circuits are either push-pull or

 

 

 

 

 

n-channel open-drain type.

 

 

 

P2.0–P2.3

I/O

I/O port with bit-programmable pins.

1

42–44

Ext. INT

P2.4–P2.7

 

Configurable to input or push-pull output

 

1, 2,

(INT5–INT8)

 

 

mode. Pull-up resistors can be assigned

 

10,11,

(INT9)

 

 

by software. Pins can be assigned

 

15

(CIN0-CIN3)

 

 

individually as external interrupt inputs

 

 

 

 

 

with noise filters, interrupt enable/

 

 

 

 

 

disable, and interrupt pending control.

 

 

 

 

 

SED & R(note) circuit built in P2.4-P2.7

 

 

 

 

 

for STOP releasing. Also P2.4-P2.7 can

 

 

 

 

 

be assigned individually as analog input

 

 

 

 

 

pins for Comparator.

 

 

 

P3.0

I/O

I/O port with bit-programmable pin.

3

3

T0PWM/T0CAP

 

 

Configurable to input mode, push-pull

 

 

(SDAT)

 

 

output mode, or n-channel open-drain

 

 

 

 

 

output mode. Input mode with a pull-up

 

 

 

 

 

resistor can be assigned by software.

 

 

 

 

 

This port 3pin has high current drive

 

 

 

 

 

capability. Also P3.0 can be assigned

 

 

 

 

 

individually as an output pin for T0PWM

 

 

 

 

 

or input pin for T0CAP.

 

 

 

 

 

In the tool mode, P3.0 is assigned as

 

 

 

 

 

serial MTP interface pin; SDAT

 

 

 

NOTE: SED & R means “STOP Error Detect & Recovery”. The Stop Error Detect & Recovery Circuit is used to release stop mode and prevent abnormal-stop mode. Refer to page 8-11.

1-8

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Samsung S3F80JB manual Pin Descriptions of 44-QFP Circuit 44 Pin Shared Names