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4
(T2)
P1.0
(T2EX)
P1.1
(ECI)
P1.2
(CEX0)
P1.3
(CEX1)
P1.4
(CEX2)
P1.5
(CEX3)
P1.6
(CEX4)
P1.7
RST
(RXD)
P3.0
(TXD)
P3.1
(INT0)
P3.2
(INT1)
P3.3
(T0)
P3.4
(T1)
P3.5
(WR)
P3.6
(RD)
P3.7
XTAL2
XTAL1
VSS
VDD
P0.0
(AD0)
P0.1
(AD1)
P0.2
(AD2)
P0.3
(AD3)
P0.4
(AD4)
P0.5
(AD5)
P0.6
(AD6)
P0.7
(AD7)
EA
ALE
PSEN
P2.7
(A15)
P2.6
(A14)
P2.5
(A13)
P2.4
(A12)
P2.3
(A11)
P2.2
(A10)
P2.1
(A9)
P2.0
(A8)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
17
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
23
24
22
21
VSS
(T2)
P1.0
(T2EX)
P1.1
NC
(ECI)
P1.2
(CEX0)
P1.3
(CEX1)
P1.4
(CEX2)
P1.5
(CEX3)
P1.6
(CEX4)
P1.7
RST
(RXD)
P3.0
(TXD)
P3.1
(INTO)
P3.2
(INT1)
P3.3
(TO)
P3.4
(T1)
P3.5
(WR)
P3.6
(RD)
P3.7
XTAL2
P0.0
(AD0)
P0.1
(AD1)
P0.2
(AD2)
P0.3
(AD3)
P0.4
(AD4)
P0.5
(AD5)
P0.6
(AD6)
P0.7
(AD7)
EA
ALE
PSEN
P2.7
(A15)
P2.6
(A14)
P2.5
(A13)
P2.4
(A12)
P2.3
(A11)
P2.2
(A10)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
17
19
20
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
27
28
26
25
21
22
24
23
XTAL1
VSS
VDD
P2.1
(A9)
P2.0
(A8)
NC
VDD
Figure 2a. UT69RH051 40-Pin DIP Connections
Figure 2b. UT69RH051 44-Pin Flatpack Connections