cdp1871ac Intersil Corporation, cdp1871ac Datasheet - Page 6

• Manufacturer Part Number: cdp1871ac
• Description: Cmos Keyboard Encoder
• Manufacturer: Intersil Corporation

NOTES:
CDP1800- Series Signal
1. CONTROL overrides SHIFT and ALPHA
2. Showing ASCII outputs for all combinations with and without SHIFT, ALPHA LOCK and CONTROL.
3. Drive lines 8, 9, 10 and 11 generate non-ASCII hex values which can be used for special codes.
SENSE
LINES
KEY:
S
S
S
S
S
S
S
S
1
2
3
4
5
6
7
8
CPU
SHIFT (Note 1)
NORMAL
SP
%
&
0
1
2
#
3
$
4
5
6
7
!
“
‘
D
1
0
1
2
3
4
5
6
7
8
9
+
<
=
>
?
*
(
)
:
;
,
-
.
/
TABLE 3. DRIVE AND SENSE LINE KEYBOARD CONNECTIONS (NOTE 2)
D
2
ALPHA (Note 1)
CONTROL (Note 1)
8
9
-
:
;
,
.
/
MRD
MRD
MRD
CS4
@
A
B
C
D
E
G
a
b
d
e
F
g
c
‘
f
D
TABLE 2. VALID N-LINE CONNECTIONS
3
SOH
ENQ
NUL
EOT
ACK
STX
ETX
BEL
@
CDP1871A, CDP1871AC
A
B
C
D
E
G
F
= No Response
CS3
N2
N0
N2
CDP1871A SIGNAL
M
m
H
N
O
h
K
L
n
o
J
k
I
i
I
j
D
4
BS
CR
SO
HT
VT
FF
LF
SI
M
O
H
K
N
J
L
I
4-71
DRIVE LINES
W
W
P
Q
S
U
V
p
q
R
T
u
s
v
r
t
D
CS2
N0
N1
N1
5
DLE
DC1
DC2
DC3
DC4
ETB
NA
SY
W
Q
P
R
S
T
U
K
V
N
Del
X
Y
Z
~
x
y
z
{
[
|
|
\
}
]
-
D
6
EM
CA
SU
ES
GS
RS
US
FS
X
N
Y
Z
B
C
-
[
\
]
CS1
N1
N2
N0
Carriage
Escape
Return
Space
Delete
Feed
Line
D
7
80
81
82
83
84
85
86
87
D
6
6
6
6
6
6
6
6
8
1
1
1
1
1
1
1
1
INSTRUCTION
CPU INPUT
8A
8B
8C
8D
8E
88
89
8F
D
9
16
16
16
16
16
16
16
16
INP5
INP3
INP6
90
91
92
93
94
95
96
97
D
10
16
16
16
16
16
16
16
16
9A
9B
9C
9D
9E
98
99
9F
D
11
16
16
16
16
16
16
16
16