W91F820N Datasheet, PDF (13/20 Pages) Winbond – 13-FLASH MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS

Preliminary W91F820N SERIES
Timing Waveforms, continued
HKS
KEY IN
DTMF
T/P MUTE
H/P MUTE
KT
DTMF
OSC.
3
2
TKID
T_TD
6
TKRD
TITP
T_KID
5
T_KRD
T_ITP
T_KRD
T_ITP
LOW
HIGH
OSC.
OSC.
Figure 2(a) Tone Mode Timing Diagram (Normal dialing without lock)
HKS
KEY IN
DTMF
T/P MUTE
H/P MUTE
KT
DP
OSC.
< 300 mS
3
2
6
T_KRD
TTD
TITP
TFKD
LOW
T_KID
5
T_KRD
T_ITP
T_KRD
T_ITP
HIGH
OSC.
OSC.
Figure 2(b) Tone Mode Timing Diagram (Normal dialing with lock function)
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Publication Release Date: January 1999
Revision A1