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W91F820N Datasheet, PDF (19/20 Pages) Winbond – 13-FLASH MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS
Preliminary W91F820N SERIES
Timing Waveforms, continued
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
KT
DTMF
OSC.
TKID
Fn
TFB
OSC.
LOW
LOW
TFP
Figure 8 Flash Operation Timing Diagram
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Publication Release Date: January 1999
Revision A1