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W91550DNF-1

13-MEMORY TONE/PULSE DIALER WITH LCD AND LOCK FUNCTIONS

Winbond 

W91550DN SERIES

AC CHARACTERISTICS

PARAMETER

Key-in Debounce

Key Release Debounce

Off-hook Delay

First Key-in Delay

On-hook Debounce

Pulse Mute Delay

Pre-digit-pause (10 ppS)

Interdigit Pause (Auto dialing)

Make/Break Ratio

Tone Output Duration

Intertone Pause

Flash Break Time

Flash Pause Time

Pause Time

SYM.

TKID

TKRD

TOFD

TFKD

TOHD

TMD

TPDP

TIDP

M:B

TTD

TITP

TFB

TFP

TP

CONDITIONS

-

-

Lock only

Lock only

Normal mode

Lock mode

B/M = VDD

B/M = VSS

B/M = VDD

B/M = VSS

10 ppS

B/M = VDD

B/M = VSS

Auto dialing

Auto dialing

F1

F2

F3

F1, F2, F3

Mask option

(default 3.6S)

One-key Redialing Break Time TRB

-

One-key Redialing Pause Time TRP

-

LCD Frame Frequency

FLCD

-

MIN.

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

TYP.

20

20

300

300

250

20

40

33.3

40

33.3

800

40:60

33:67

87

87

600

300

98

1.2

2.0

3.6

4.0

2.2

0.6

50

MAX.

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

UNIT

mS

mS

mS

mS

mS

mS

mS

mS

%

mS

mS

mS

S

S

S

S

Hz

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, and

= 3.579545 MHz ±0.02%

2. Crystal oscillator accuracy directly affects these times.

FOSC.

- 14 -

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