位置：首页 > IC型号导航 > 首字符A型号页 > 首字符A的型号第887页 > AT89C51AC3-RLTUM > AT89C51AC3-RLTUM PDF资料 > AT89C51AC3-RLTUM PDF资料6第4页
P1.3/AN3/CEX0
P1.2/AN2/ECI
P1.1/AN1/T2EX
P1.0 / AN 0 / T2
VAGND
RESET
VSS
TESTI
VCC
2
VAREF
7
6
5 4
3
1 52 51 50 49 48 47
46
45
44
43
42
41
40
39
38
37
36
35
34
P1.4/AN4/CEX1
P1.5/AN5/CEX2
P1.6/AN6/CEX3
P1.7/AN7/CEX4
EA
NC
P3.0/RxD
P4.3/SCK
P3.1/TxD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1/SS
8
9
10
11
12
13
14
15
16
17
18
19
20
VCC
XTAL1
XTAL2
ALE
PSEN
P0.7/AD7
P0.6/AD6
NC
P0.5/AD5
P0.4 / AD4
P0.3 / AD3
P0.2 / AD2
P0.1 / AD1
P4.4/MOSI
P0.0 / AD0
P2.0/A8
PLCC52
21 22 23 24 25 26 27 28 29 30 31
32 33
P3.6/WR
P3.7/RD
P4.0
P4.1
P2.7/A15
P2.6/A14
NC
TESTI必须连接到VSS
P1.3/AN3/CEX0
P1.2/AN2/ECI
P1.1/AN1/T2EX
P1.0/AN0/T2
VAREF
VAGND
RESET
VSS
VSS
VSS
TESTI
VCC
VCC
VCC
XTAL1
XTAL2
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
P2.5/A13
P2.4/A12
P2.3/A11
P2.2/A10
P2.1/A9
P4.2/MISO
P1.4/AN4/CEX1
NC
P1.5/AN5/CEX2
P1.6/AN6/CEX3
P1.7/AN7/CEX4
NC
EA
NC
NC
P3.0/RxD
P4.3/SCK
P3.1/TxD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1/SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VQFP64
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
NC
ALE
PSEN
P0.7/AD7
P0.6/AD6
NC
P0.5/AD5
NC
NC
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P4.4/MOSI
P0.0/AD0
P2.0/A8
4
AT89C51AC3
4383B–8051–01/05
P3.6/WR
P3.7/RD
P4.0
P4.1
P2.7/A15
P2.6/A14
NC
NC
NC
NC
P2.5/A13
P2.4/A12
P2.3/A11
P2.2/A10
P2.1/A9
P4.2/MISO
TESTI必须连接到VSS
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
