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S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
Table 1-1. S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X Pin Descriptions (Continued)
Pin
Pin
Names
Type
VLC0−VLC2
I/O
INT0−INT2
INT3−INT7
T1CLK
I/O
TAOUT
I/O
TBOUT
I/O
CLKOUT
I/O
BUZ
I/O
SCK, SO, SI
I/O
COM0–COM3
I/O
SEG0–SEG15
I/O
SEG16–SEG30
SEG31
V
I/O
BLDREF
V
O
REG
nRESET
XT
, XT
IN
OUT
X
, X
IN
OUT
TEST
V
, V
DD
SS
Description
−
LCD power supply pins.
External interrupts input pins.
Timer 1/A external clock input.
Timer 1/A clock output.
Timer B clock output.
System clock output.
Output pin for buzzer signal.
Serial clock, data output, and data input.
LCD common signal outputs.
LCD segment signal outputs.
Battery level detector reference voltage
Regulator voltage output for sub clock
(needed 0.1uF)
I
System reset pin
−
Sub oscillator pins
−
Main oscillator pins.
Test input: it must be connected to V
I
−
Power input pins
Pin
SS
PRODUCT OVERVIEW
Circuit
Pin
Type
No.
−
6−8
E-4
18−20
29−33
E-4
21
E-4
22
E-4
23
E-4
24
E-4
25
E-4
26,27,28 P1.0, P1.1, P1.2
H-9
2−5
H-9
1,64− 50
H-8
49−35
H-10
P2.0/V
34
H-10
34
−
17
B
16
−
14, 15
−
12, 11
−
13
−
9, 10
Shared
Functions
−
P0.0−P0.2
P1.3−P1.7
P0.3
P0.4
P0.5
P0.6
P0.7
P6.0−P6.3
P5.7−P4.0
P3.7−P2.1
BLDREF
P2.0/SEG31
−
−
−
−
−
−
1-7
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