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W91521N 데이터 시트보기 (PDF) - Winbond
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W91521N
TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTIONS
Winbond
W91521N Datasheet PDF : 16 Pages
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TIMING WAVEFORMS
W91520N SERIES
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
DTMF
OSC.
3
T
KID
4
T
IDP
MB
T
PDP
2
T
IDP
M B
T
IDP
2
T
KID
T
KRD
T
IDP
T
PDP
Low
OSCILLATION
OSCILLATION
Figure 1(a) Normal Dialing Timing Diagram
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
DTMF
OSC.
T
KRD
R/P
T
KID
MB
T
PDP
T
IDP
M B
T
IDP
T< T
OHD
T
IDP
Low
OSCILLATION
Figure 1(b) Pulse Mode Auto Dialing Timing Diagram
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