W91F820N Datasheet, PDF (12/20 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
(long mute)
H/P MUTE
KT
DTMF
OSC.
R/P
M
B
T _PDP
T IDP
MB
T_IDP
T_PDP
T_IDP
ON HOOK
LOW
OSC.
Figure 1(c) Pulse Mode Timing Diagram (Auto dialing without lock)
HKS
KEY IN
DP
T/P MUTE
(long mute)
H/P MUTE
KT
DTMF
OSC.
<300 mS
R/P
M
B
T_FKD
T_IDP
T_PDP
T_IDP
LOW
OSC.
Figure 1(d) Pulse Mode Timing Diagram (Auto dialing with lock function)
- 12 -