EM91440 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
APPLICATION CIRCUIT
EM91440 series Application circuit
R M U T E
H F O
D T M F
D R I N G
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
H F I
1 1
V S S
1 0
V D D
H K S
X M U T E
9
X O U T
8
R O W 1
X I N
7
R O W 2
R O W 3
R O W 4
C O L 1
6
C O L 2
5
C O L 3
4
P O
H D O
S D O
C O L 4 / K T
3
C O L 5
2
N C
1
* This specification are subject to be changed without notice.
10.1.1997
19