W91590 Datasheet, PDF (19/20 Pages) Winbond – 24-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE, HOLD AND LOCK FUNCTIONS

Timing Waveforms, continued
HKS
KEY IN
DP
T/P MUTE
HPM MUTE
KT
DTMF
OSC.
W91590 SERIES
LOW
F
TFB
LOW
OSCILLATION
TFKP
Figure 7. Flash Operation Timing Diagram
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Publication Release Date: July 1995
Revision A3