W91520N Datasheet, PDF (9/16 Pages) Winbond – TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION

W91520N SERIES
AC CHARACTERISTICS
(VDD−VSS = 2.5V, FOSC. = 3.579545 MHz, TA = 25° C, all outputs unloaded)
PARAMETER
SYMBOL
CONDITIONS
Key-in Debounce
Key Release Debounce
On-hook Debounce
Pre-digit Pause¹
Pre-digit Pause²
TKID
TKRD
TOHD
TPDP1
10 ppS
TPDP2
20 ppS
-
-
-
Mode = VDD
Mode = Floating
Mode = VDD
Mode = Floating
Interdigit Pause
(Auto Dialing)
Make/Break Ratio
TIDP
M:B
10 ppS
20 ppS
Mode = VDD
Mode = Floating
Tone Output Duration
Intertone Pause
Flash Break Time
TTD
Auto dialing
TITP
Auto dialing
TFB
F1
F2
F3
F4
Flash Pause Time
Pause Time
TFP
F1, F2, F3, F4
TP
R/P1
R/P2
One-key Redial Break
TRB
-
Time
One-key Redial Pause
TRP
-
Time
MIN.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TYP. MAX.
20
-
20
-
150
-
40
-
33.3
-
20
-
16.7
-
800
-
500
-
40:60
-
33.3:66.7 -
93
-
93
-
600
-
100
-
300
73
-
1.0
-
3.6
-
2.0
-
2.2
-
UNIT
mS
mS
mS
mS
mS
mS
%
mS
mS
mS
S
S
S
-
600
-
mS
Notes:
1. Crystal parameters suggested for proper operation are Rs < 100 Ω, Lm = 96 mH, Cm = 0.02 pF, Cn = 5 pF, Cl = 18 pF,
FOSC. = 3.579545 MHz ±0.02%.
2. Crystal oscillator accuracy directly affects these times.
Publication Release Date: May 1997
-9-
Revision A3