em91401a ELAN Microelectronics Corp, em91401a Datasheet - Page 13

• Manufacturer Part Number: em91401a
• Description: Em91401 Series Tone/pulse Switchable Dialer With Lcd Interface And Dual-tone Melody Generator Em91401 Series Tone/pulse Switchable Dialer With Lcd Interface And Dual-tone Melody Generator
• Manufacturer: ELAN Microelectronics Corp

* 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
EM91401 SERIES
Hi-impedance
10.1.1997
13