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W91473B 데이터 시트보기 (PDF) - Winbond
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W91473B
14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTIONS
Winbond
W91473B Datasheet PDF : 20 Pages
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W91473 SERIES
Timing waveforms, continued
HKS
HFI
H KEY
HFO
ON HOOK
T/P MUTE
HIGH
HPM MUTE
CHIP ENBLE
Figure 3(c).
Note: Changing the state of the HKS signal from high to low will initialize the HFO and HPM MUTE signals.
HKS
LOW
KEY IN
DP
R
T
KID
T
RB
T
IDP
T
PDP
T
IDP
T/P MUTE
HPM MUTE
KT
DTMF
T
FKP
OSC.
LOW
OSCILLATION
Figure 4. Pulse Mode One-key Redialing Timing Diagram (when not first key)
- 17 -
Publication Release Date: February 1995
Revision A3
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