W91580 Datasheet, PDF (13/19 Pages) Winbond – 24-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND HOLD FUNCTIONS

W91580 SERIES
PARAMETER
Keypad Active in Debounce
Key Release Debounce
Pre-digit Pause¹
Pre-digit Pause²
Interdigit Pause (Auto dialing)
Make/Break Ratio
Tone Output Duration
Intertone Pause
Flash Break Time
SYM.
CONDITIONS
TKID
-
TKRD
-
TPDP1 MODE Pin = VDD
10 ppS MODE Pin = Floating
TPDP2 MODE Pin = VDD
20 ppS MODE Pin = Floating
TIDP 10 ppS
20 ppS
M/B MODE Pin = VDD
MODE Pin = Floating
TTD Auto Dialing
TITP Auto Dialing
TFB
-
Pause Time
TP
-
Key Tone Frequency
FKT
-
Key Tone Duration
TKTD
-
One-key Redialing Pause Time TRP
-
One-key Redialing Break Time TRB
-
MIN.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TYP.
20
20
40
33.3
20
16.7
800
500
40:60
33:67
100
100
98
305
600
3.6
600
35
600
2.2
MAX.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
UNIT
mS
mS
mS
mS
mS
%
mS
mS
mS
S
Hz
mS
mS
S
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.
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Publication Release Date: Auguest 1995
Revision A3