Rainbow Electronics AT89C5131 - Manual (Page 4)

4
AT89C5131
4136A–USB–03/03
Pinout Description
Pinout
Figure 1. AT89C5131 52-pin PLCC Pinout
21 22 26 25 24 23 29 28 27 30 31
5 4 3 2 1 6 52 51 50 49 48
8
9
10
11
12
13
14
15
16
17
18
46
45
44
43
42
41
40
39
38
37
36
PLCC52
7 47
19
20
32 33
34
35
P1
.1
/T
2
EX/
KI
N1
/S
S
P
1
.0/T
2/
K
IN0
P0.6/AD6
ALE
P0.7/AD7
EA
PSEN
P
1
.7/C
E
X
4
/K
IN7/M
OS
I
P
1
.3/CE
X
0
/K
IN3
P
1
.5/CE
X
2
/K
IN5/M
IS
O
P
1
.6
/CE
X
3
/K
IN6
/S
C
K
PLLF
P3.0/RxD
AVSS
P2.6/A14
XTAL1
P2.5/A13
P0.3/AD3
P0.5/AD5
P0.4/AD4
VREF
P0.2/AD2
P
0
.0
/A
D0
P0.1/AD1
AVDD
NC
P3
.2
/I
NT
0
P3.6/WR/LED2
XTAL2
RST
P3
.1
/T
x
D
P
3
.3
/INT
1
/L
E
D
0
P3.7/RD/LED3
D-
P
2
.0
/A
8
P
2
.1
/A
9
P
2
.2
/A
10
P2.3/A11
VSS
P2.4/A12
P4.1
D+
P4
.0
P
1
.2/E
CI/
K
IN2
P
1
.4/CE
X
1
/K
IN4
P
3
.4
/T
0
P3
.5
/T
1
/L
E
D1
NC
NC
VDD
NC
P2.7/A15