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