Realtek RTD2120-series
confidential
7
Pin Description
Pin No.
PLCC
44
LQFP
48
QFP
44
Name
I/O
Internal
Pull
Up/Down
Default
output
value
Pin Type
Description
2
44
40
P5.0/PWM0
I/O
--
1(P5.0)
Open
Drain
General purpose I/O /
PWM0 output
3
45
41
P5.1/PWM1
I/O
--
1(P5.1)
Open
Drain
General purpose I/O /
PWM1 output
4
46
42
P5.2/PWM2
I/O
--
1(P5.2)
Open
Drain
General purpose I/O /
PWM2 output
5
47
43
P5.3/PWM3
I/O
--
1(P5.3)
Open
Drain
General purpose I/O /
PWM3 output
6
48
44
P5.4/PWM4
I/O
--
1(P5.4)
Open
Drain
General purpose I/O /
PWM4 output
7
1
1
P5.5/PWM5
I/O
--
1(P5.5)
Open
Drain
General purpose I/O /
PWM5 output
8
2
2
P5.6/DSCL
I/O
--
1(P5.6)
Open
Drain
General purpose I/O /
DVI DDC SCL
9
3
3
P5.7/DSDA
I/O
--
1(P5.7)
Open
Drain
General purpose I/O /
DVI DDC SDA
10
4
4
RST
I
Down
0
Input
High active RESET
11
5
5 ASCL/P3.0/RXD I/O
--
1(ASCL)
Open
Drain
ADC DDC SCL /
General purpose I/O /
RXD
13
8
7 ASDA/P3.1/TXD I/O
--
1(ASDA)
Open
Drain
ADC DDC SDA /
General purpose I/O /
TXD
14
9
8
P3.2/INT0
I/O
--
1(P3.2)
Standard
8051
General purpose I/O /
External interrupt 0
15
10
9
P3.3/INT1
I/O
--
1(P3.3)
Standard
8051
General purpose I/O /
External interrupt 1
16
11
10
P3.4/T0
I/O
--
1(P3.4)
Standard
8051
General purpose I/O /
Timer 0
17
12
11
P3.5/T1
I/O
--
1(P3.5)
Standard
8051
General purpose I/O /
Timer 1
18
13
12
P7.6/CLKO2
I/O
Up
1
Push-Pull General purpose I/O /
Clock out 2
19
14
13
P7.7
I/O
Up
1
Push-Pull
General purpose I/O
20
15
14
XO
O
--
--
--
Crystal out
21
16
15
XI
I
--
--
--
Crystal in
22
17
16
VSS
--
--
--
--
Ground