A-3

SIGNAL DESCRIPTIONS
Figure A-1. 87C196LA 52-pin PLCC Package
P6.1 / EPA9 / COMP1
P6.0 / EPA8 / COMP0
P1.0 / EPA0 / T2CLK
P1.1 / EPA1
P1.2 / EPA2 / T2DIR
P1.3 / EPA3
V
REF
ANGND
P0.7 / ACH7 / PMODE.3
P0.6 / ACH6 / PMODE.2
P0.5 / ACH5 / PMODE.1
P0.4 / ACH4 / PMODE.0
P0.3 / ACH3
51.
S
U
B
P
/
7.4P
/
5
1D
A
#LRW / #R
W
/
NELLP / 2.5P
#
DR
/ 3.
5
P
V
P
P
V
SS
ELA / #VD
A
/
0
.
5
P
V
1SS
1
L
AT
X
2
L
ATX
1DS
/ 7.6P
1C
S
/
6
.
6
P
0DS / 5.6P
0
C
S
/
4
.
6
P
A3419-03
AD14 / P4.6 / PBUS.14
AD13 / P4.5 / PBUS.13
AD12 / P4.4 / PBUS.12
AD11 / P4.3 / PBUS.11
AD10 / P4.2 / PBUS.10
AD9 / P4.1 / PBUS.9
AD8 / P4.0 / PBUS.8
AD7 / P3.7 / PBUS.7
AD6 / P3.6 / PBUS.6
AD5 / P3.5 / PBUS.5
AD4 / P3.4 / PBUS.4
AD3 / P3.3 / PBUS.3
AD2 / P3.2 / PBUS.2
46
45
44
43
42
41
40
39
38
37
36
35
34

xx87C196LA20

View of component as

mounted on PC board

8
9
10
11
12
13
14
15
16
17
18
19
20
1.SU
B
P
/
1
.
3
P
/
1D
A
0
.SU
BP
/
0
.
3
P
/
0D
A
#TESE
R
#
A
E
V
1SS
V
C
C
REVP /
D
X
T
/
0
.
2
P
#
E
L
AP
/
D
XR
/ 1.2P
#GOR
P
/
T
N
I
T
X
E
/
2
.
2
P
#CNIA /
4
.
2
P
R
E
VPC
/
ECNO
/
6
.
2
P
#TCAP
/
TUO
K
LC
/
7.2
P
2
H
C
A
/
2
.
0
P
12
2
2
32
42
52
6
2
72
82
92
0
3
13
23
3
3
7
6
5
4
3
2
1
2
5
1
5
05
9
4
8
4
74