
S3C94A5/F94A5 
PRODUCT OVERVIEW 
1-7
 Table 1-1. Pin Descriptions (Continued) 
Pin Names 
Pin 
Type 
Pin Description 
Circuit 
Number 
Pin 
Numbers 
Share 
Pins 
V
DD1
, V
SS1 
V
DD2
, V
SS2
– 
Power input pins for internal power block 
– 
43,40(36,33) 
21,22(-) 
– 
X
OUT
, X
IN
– 
Oscillator pins for system clock 
– 
41,42(34,35) 
– 
TEST 
– 
Chip test input pin 
Hold GND when the device is operating 
– 
38(31) 
– 
nRESET 
I 
nRESET signal input pin. Schmitt trigger 
input with internal pull-up resistor. 
B 
39(32) 
– 
INT 
I/O 
External interrupts input. 
E-4 
F-16A 
F-16A 
F-16 
44,1-6 
(37-42,1) 
15-20(10-15) 
30(23) 
31(24) 
P1.0-P1.6 
P3.0-P3.5 
P4.7 
P5.0 
T0CLK 
I/O 
Timer 0 external clock input 
F-16A 
20(15) 
P3.5 
T0CAP 
I/O 
Timer 0 capture input 
F-16A 
19(14) 
P3.4 
T0OUT 
I/O 
Timer 0 clock output 
F-16A 
18(13) 
P3.3 
T0PWM 
I/O 
Timer 0 PWM output 
F-16A 
18(13) 
P3.3 
T1CAP 
I/O 
Timer 1 capture input 
E-4 
 25(18) 
P4.2 
T1OUT 
I/O 
Timer 1 clock output 
F-16A 
  23(16) 
P4.0 
T1PWM 
I/O 
Timer 1 PWM input 
F-16A 
 23(16) 
P4.0 
T2CAP 
I/O 
Timer 2 capture input 
E-4 
26(19) 
P4.3 
T2OUT 
I/O 
Timer 2 clock output 
F-16A 
24(17) 
P4.1 
T2PWM 
I/O 
Timer 2 PWM output 
F-16A 
24(17) 
P4.1 
AD0–AD5 
AD6–AD11 
AD12,13,14 
AD15 
I/O 
Analog input pins for A/D converts module 
F-16 
F-16A 
F-16A 
F-16 
7-12(2-7) 
15-20(10-15) 
23,24,30 
(16,17,23) 
31(24) 
P2.0-P2.5 
P3.0-P3.5 
P4.0,P4.1,
P4.7 
P5.0 
AV
REF
– 
A/D converter reference voltage 
– 
13(8) 
– 
AV
SS
– 
A/D converter ground 
– 
14(9) 
– 
BUZ 
I/O 
Buzzer signal output 
F-16A 
16(11) 
P3.1 
CLO 
I/O 
CPU clock output 
F-16A 
15(10) 
P3.0 
SCK 
SI 
SO 
I/O 
Serial clock, serial data input, serial data 
output 
E-4 
29(22) 
28(21) 
27(20) 
P4.6 
P4.5 
P4.4 
NOTE:
 Parentheses indicate pin number for 42-SDIP-600 package.