em91403 ELAN Microelectronics Corp, em91403 Datasheet - Page 16
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
1.EM91403.pdf
(24 pages)
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* This specification are subject to be changed without notice.
XMUTE
KEY IN
XMUTE
KEY IN
DTMF
KEY IN
XMUTE
HKS
OSC.
HDO
DTMF
SDO
HKS
DTMF
HDO
OSC.
KT
PO
SDO
HKS
OSC.
HDO
PO
SDO
KT
KT
PO
Tdb
2
Figure 6. Pulse to Tone (P T) operating timing
2
Tidp
F
Figure 5. Pause key operating timing
Figure 7. Flash key operating timing
Tf
RD/P
*/T
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Tp
Tfp=300ms
Tpt
3
3
Tidp
AND DUAL-TONE MELODY GENERATOR
4
Hi-impedance
Hi-impedance
Hi-impedance
EM91403 SERIES
10.1.1997
16
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