W91440N Datasheet, PDF (11/14 Pages) Winbond – 10-MEMORY TONE/PULSE DIALER WITH SAVE FUNCTION

Timing Waveforms, continued
W91440N SERIES
HKS
KEY IN
DTMF
T/P MUTE
DP
OSC.
3
TKID
T TD
4
2
T ITP
T ITP
OSCILLATION
High
TKRD
5
TITP
OSCILLATION
Figure 2(a) Tone Mode Normal Dialing Timing Diagram
HKS
KEY IN
DTMF
T/P MUTE
DP
OSC.
R/P
T KID
TKRD
T TD
TITP
T<T OHD
T ITP
High
OSCILLATION
Figure 2(b) Tone Mode Auto Dialing Timing Diagram
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Publication Release Date: May 1997
Revision A3