Owner manual

6 Rev. F - 15 February, 2001
T89C51RD2
12
10
15
14
13
11
16
17
18
19
20
21
22
23
24
25
26
P5.5
P0.3/AD3
P0.2/AD2
P5.6
P0.1/AD1
P0.0/AD0
P5.7
VCC
VSS1
P1.0/T2
P4.0
P1.1/T2EX
P1.2/ECI
P1.3/CEX0
P4.1
P1.4/CEX1
P4.2
23567 4 1 686766656463
60
59
58
57
56
55
36 37 38 39 40 41
29 30 31
32
33
34 35
27 28
42 43
48
49
50
51
52
53
54
PSEN
P5.3
P0.5/AD5 P0.6/AD6
NIC
P0.7/AD7
EA
NIC
ALE/PRO
G
NIC
P2.7/A15 P2.6/A14
P5.2
P0.4/AD4
P5.4 P5.1
P2.5/A13
NIC
P1.7/CEX4
RST
NIC NIC NIC
P3.0/RxD
NIC NIC NIC
P3.1/TxD
P3.3/INT1
P5.0
P2.4/A12
P2.3/A11
P4.7
P2.2/A10
P2.1/A9
P2.0/A8
VSS
P4.6
P4.5
XTAL1
XTAL2
NIC
PLCC 68
89
62 61
P1.5/CEX2 P1.6/CEX3
P3.4/T0 P3.5/T1
44
45
46
47
P4.4
P3.6/WR
P4.3
P3.7/RD
P3.2/INT0
PSEN
P5.4 P5.3
P0.5/AD5 P0.6/AD6 P0.7/AD7
EA
NIC
ALE/PROG
P2.7/A15 P2.6/A14
P5.2 P5.1
P2.5/A13
P5.0
P0.4/AD4
58 5051525354555657596061626364 49
VSS
P2.3/A11
P4.7
P2.2/A10
P2.1/A9
P2.0/A8
P4.6
P4.5
NIC
XTAL1
XTAL2
P3.7/RD
P4.4
P4.3
P2.4/A12
P3.6/WR
42
34
35
36
37
38
39
40
41
43
44
45
46
47
48
33
P1.0/T2
P0.3/AD3
P0.2/AD2
P5.6
P0.1/AD1
P0.0/AD0
P5.7
VCC
VSS1
P4.0
P1.1/T2EX
P1.2/EC1
P1.3/CEX0
P4.1
P1.4/CEX1
P5.5
7
15
14
13
12
11
10
9
8
6
5
4
3
2
1
16
NIC
P3.4/T0
P3.2/INT0
P3.1/TxD
NIC NIC
P3.0/RxD
NIC NIC
RST
P1.7/CEX4 P1.6/CEX3 P1.5/CEX2
P4.2
P3.5/T1
2618 19 20 21 22 23 24 25 27 28 29 30 31 3217
VQFP64 1.4
P3.3/INT1
NIC: No InternalConnection