P83C251SA16 데이터 시트보기 (PDF) - Intel
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P83C251SA16 Datasheet PDF : 36 Pages
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8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
PLCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Table 4. 8XC251SA/SB/SP/SQ Pin Assignment
DIP
Name
PLCC
DIP
Name
VSS1
1
P1.0/T2
23
VSS2
24
21 A8/P2.0
2
P1.1/T2EX
25
22 A9/P2.1
3
P1.2/ECI
26
23 A10/P2.2
4
P1.3/CEX0
27
24 A11/P2.3
5
P1.4/CEX1
28
25
A12/P2.4
6
P1.5/CEX2
29
26 A13/P2.5
7
P1.6/CEX3/WAIT#
30
27 A14/P2.6
8
P1.7/CEX4/A17/WCLK
31
28 A15/P2.7
9
RST
32
29 PSEN#
10
P3.0/RXD
33
30 ALE/PROG#
VCC2
11
P3.1/TXD
12
P3.2/INT0#
34
VSS2
35
31
EA#/VPP
36
32 AD7/P0.7
13
P3.3/INT1#
37
33 AD6/P0.6
14
P3.4/T0
38
34 AD5/P0.5
15
P3.5/T1
39
35 AD4/P0.4
16
P3.6/WR#
40
36 AD3/P0.3
17
P3.7/RD#/A16
41
37 AD2/P0.2
18
XTAL2
42
38 AD1/P0.1
19
XTAL1
43
39 AD0/P0.0
20
VSS
44
40
VCC
8
PRELIMINARY
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