Samsung S3F80JB User Manual
Page 25
S3F80JB
PRODUCT OVERVIEW
1-7
Table 1-1. Pin Descriptions of 32-SOP
Pin
Names
Pin
Type
Pin Description
Circuit
Type
32 Pin
No.
Shared
Functions
P0.0–P0.7
I/O
I/O port with bit-programmable pins. Configurable
to input or push-pull output mode. Pull-up resistors
are assignable 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.
1 17–24 Ext.
INT
(INT0–INT3)
(INT4)
P1.0–P1.7
I/O
I/O port with bit-programmable pins. Configurable
to input mode or output mode. Pin circuits are
either push-pull or n-channel open-drain type.
2 9–16
–
P2.0–P2.3
P2.4–P2.7
I/O
I/O port with bit-programmable pins. Configurable
to input or push-pull output mode. Pull-up resistors
can be assigned 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 P2-P2.7 for STOP releasing. Also P2.4-
P2.7 can be assigned individually as analog input
pins for Comparator.
1
25–28
29,5,6,8
Ext. INT
(INT5–INT8)
(INT9)
(CIN0-CIN3)
P3.0
I/O
I/O port with bit-programmable pin. Configurable to
input mode, push-pull output mode, or n-channel
open-drain output mode. Input mode with a pull-up
resistor can be assigned by software.
This port 3 pin 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
3 30
T0PWM/T0CAP
(SDAT)
P3.1
I/O
I/O port with bit-programmable pin. Configurable to
input mode, push-pull output mode, or n-channel
open-drain output mode. Input mode with a pull-up
resistor can be assigned by software.
This port 3 pin has high current drive capability.
Also P3.1 can be assigned individually as an
output pin for REM.
In the tool mode, P3.1 is assigned as serial MTP
interface pin; SCLK
4 31
REM
(SCLK)
X
OUT,
X
IN
–
System clock input and output pins
–
2,3
–
nRESET
I
System reset signal input pin and back-up mode
input.
6
7 –
TEST
I
Test signal input pin
(for factory use only; must be connected to V
SS
).
– 4
–
V
DD
–
Power supply input pin
– 32
–
V
SS
–
Ground pin
– 1
–