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