em91403 ELAN Microelectronics Corp, em91403 Datasheet - Page 14

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em91403

Manufacturer Part Number
em91403
Description
Tone/pulse Switchable Dialer With Lcd Interface And Dual-tone Melody Generator Tone/pulse Switchable Dialer With Lcd Interface And Dual-tone Melody Generator
Manufacturer
ELAN Microelectronics Corp
Datasheet

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* This specification are subject to be changed without notice.
TIMING DIAGRAM
XMUTE
KEY IN
XMUTE
KEY IN
DTMF
DTMF
HKS
OSC.
HKS
HDO
OSC.
SDO
HDO
SDO
KT
PO
KT
PO
Tdb
Tdly
2
2
Figure 2. DTMF mode operating timing
Figure 1. Pulse mode operating timing
Tdb
Tidp
Td
Tkt
Tm
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Titp
T
b
m
T
T
b
m
T
3
AND DUAL-TONE MELODY GENERATOR
Tidp
3
Titp
Hi-impedance
EM91403 SERIES
Hi-impedance
10.1.1997
14

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