Rainbow Electronics T89C51RD2 - Manual (Page 6)

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
2 3 5 6 7 4 1 68 67 66 65 64 63
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
8 9 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 50 51 52 53 54 55 56 57 59 60 61 62 63 64 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
26 18 19 20 21 22 23 24 25 27 28 29 30 31 32 17
VQFP64 1.4
P3.3/INT1
NIC: No InternalConnection