Table 1-1. S3C825A Pin Descriptions (Continued)
Pin
Names
Pin
Type
Pin
Description
Circuit
Type
Pin
Numbers
(note)
Share
Pins
V
SS1
, V
DD1
–
Power input pins for core block
–
10, 11 (12, 13)
–
X
OUT
,
X
IN
–
Main oscillator pins
–
12, 13 (14, 15)
–
TEST
–
Test signal input pin (must be connected
to V
SS
)
–
14 (16)
–
XT
IN
, XT
OUT
–
Sub oscillator pins
–
15, 16 (17,18)
–
RESET
I
System reset pin
B
17 (19)
–
INT0–INT3
I/O
External interrupt input pins
E-4
20–23 (22–25)
P2.4–P2.7
T0CLK
I/O
Timer 0 external clock input.
E-4
20 (22)
P2.4
T0OUT
I/O
Timer 0 clock output
E-4
33 (35)
P3.7
T0PWM
I/O
Timer 0 PWM output
E-4
33 (35)
P3.7
T0CAP
I/O
Timer 0 capture input
E-4
33 (35)
P3.7
T1CLK
I/O
Timer 1/A external clock input.
E-4
21 (23)
P2.5
TAOUT
I/O
Timer 1/A clock output
E-4
22 (24)
P2.6
TBOUT
I/O
Timer B clock output
E-4
23 (25)
P2.7
T2CLK
I/O
Timer 2 external clock input.
E-4
18 (20)
P2.2
T2OUT
I/O
Timer 2 clock output
E-4
19 (21)
P2.3
T3CLK
I/O
Timer 3 external clock input.
E-4
31 (33)
P3.5
T3OUT
I/O
Timer 3 clock output
E-4
32 (34)
P3.6
T3PWM
I/O
Timer 3 PWM output
E-4
32 (34)
P3.6
T3CAP
I/O
Timer 3 capture input
E-4
32 (34)
P3.6
AD0–AD3
I/O
Analog input pins for A/D convert module
F-16
25–28 (27–30)
P3.0–P3.3
AV
REF
, AV
SS
–
A/D converter reference voltage and ground
–
24, 29 (26, 31)
–
INT4–INT11
I/O
External interrupt input pins
E-4
34–41 (36–43)
P4.0–P4.7
BUZ
I/O
Buzzer signal output
E-4
45 (47)
P5.3
SCK, SI, SO
I/O
Serial clock, serial data input, serial data
output
E-4
42–44 (44–46)
P5.0–P5.2
RXD, TXD
I/O
UART data input, output
E-4
46-47 (48-49)
P5.4-P5.5
V
LC1
–
LCD bias voltage input pins
–
49 (51)
–
V
SS2
, V
DD2
–
Power input pins for peripheral block
–
50, 51 (52, 53)
–
COM0–COM3
I/O
LCD Common signal output
H-32
52–55 (54–57)
P6.0-P6.3
SEG0–SEG3
(COM4–COM7)
I/O
LCD Common or Segment signal output
H-32
56–59 (58–61)
P6.4-P6.7
SEG4–SEG11
I/O
LCD segment signal output
H-32
60–67 (62–69)
P7.0-P7.7
SEG12–SEG15
I/O
LCD segment signal output
H-32
68–71 (70–73)
P8.0-P8.3
SEG16–SEG23
I/O
LCD segment signal output
H-32
72–79 (74–80, 1)
P0.0–P0.7
SEG24–SEG31
I/O
LCD segment signal output
H-32
80, 1–7 (2–9)
P1.0–P1.7
NOTE:
Parentheses indicate pin number for 80-QFP-1420 package.
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