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EM91440C Datasheet(PDF) 14 Page - ELAN Microelectronics Corp

Part # EM91440C
Description  TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
PDF  24 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM91440C Datasheet(HTML) 14 Page - ELAN Microelectronics Corp

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EM91440 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
14
* This specification are subject to be changed without notice.
10.1.1997
TIMING DIAGRAM
Figure 1. Pulse mode operating timing
Figure 2. DTMF mode operating timing
HKS
KEY IN
KT
XMUTE
HDO
SDO
PO
DTMF
OSC.
Tdb
Tkt
2
3
Tm
Tidp
T
b
T
m
T
b
T
m
Tidp
Tdly
Hi-impedance
HKS
KEY IN
KT
XMUTE
HDO
SDO
PO
DTMF
OSC.
Tdb
2
3
Td
Titp
Titp
Hi-impedance



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