W91590 Datasheet, PDF (14/20 Pages) Winbond – 24-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE, HOLD AND LOCK FUNCTIONS

W91590 SERIES
AC CHARACTERISTICS
PARAMETER
SYM.
CONDITIONS
MIN. TYP. MAX. UNIT
Keypad Active in Debounce
TKID
-
-
20
-
mS
Key Release Debounce
Pre-digit Pause¹
TKRD
TPDP1
-
MODE Pin = 1
-
20
-
mS
-
40
-
mS
Pre-digit Pause²
10 ppS MODE Pin =
Floating
TPDP2 MODE Pin = 1
-
33.3
-
-
20
-
mS
20 ppS MODE Pin =
Floating
-
16.7
-
Interdigit Pause (Auto dialing) TIDP 10 ppS
-
800
-
mS
20 ppS
-
500
-
Make/Break Ratio
M/B MODE Pin = 1
- 40:60 -
%
MODE Pin =
Floating
- 33:67 -
Tone Output Duration
TTD Auto Dialing
-
93
-
mS
Intertone Pause
TITP Auto Dialing
-
93
-
mS
Flash Break Time
TFB
-
-
98
-
mS
-
305
-
-
600
-
Pause Time
TP
-
-
3.6
-
S
Key Tone Frequency
FKT
-
-
600
-
Hz
Key Tone Duration
TKTD
-
-
35
-
mS
One-key Redialing Pause
TPR
-
-
600
-
mS
Time
One-key Redialing Break Time TRB
-
-
2.2
-
S
First Key-in Pause Time
TFKP
-
-
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.
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