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W91550DNH

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

Winbond 

W91550DN SERIES

4. If ON HOOK , OFF HOOK , R is entered, then the mixed dialing sequence described in

the above examples will be dialed out only if the total number of digits does not exceed 32. If the

total exceeds 32 digits, then redialing is inhibited.

Combining Cascaded and Mixed Dialing

1. Cascaded dialing and mixed dialing may be combined, and each follows the rules described above.

2. To apply redialing to combinations of cascaded and mixed dialing:

ON HOOK , OFF HOOK , R , then redialing will be executed only if the total number of

digits does not exceed 32. Otherwise, the redialing is inhibited.

3. If there had been n cascaded sequences with a total of 30 digits dialed, then for the (n+1)th

cascaded sequence, one 2-digit normal dialing sequence or one complete repertory dialing

sequence (length up to 32 digits) can be dialed. The (n+2)th sequence will not be accepted for

cascaded dialing.

4. After a total of 32 digits of cascaded dialing have been completed, mixed dialing can be added.

ABSOLUTE MAXIMUM RATINGS

PARAMETER

DC Supply Voltage

Input/output Voltage

Power Dissipation

Operating Temperature

Storage Temperature

SYMBOL

VDD−VSS

VIL

VIH

VOL

VOH

PD

TOPR

TSTG

RATING

-0.3 to +7.0

VSS -0.3

VDD +0.3

VSS -0.3

VDD +0.3

120

-20 to 70

-55 to 125

UNIT

V

V

V

V

V

mW

°C

°C

Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the

device.

DC CHARACTERISTICS

( VDD−VSS = 3V, FOSC. = 3.58 MHz, TA = 25° C, all output unloaded )

PARAMETER

SYM.

CONDITIONS

Operating Voltage

Operating Current

VDD

-

IOP Tone, Unloaded

Pulse, Unloaded

Memory Retention Current IMR HKS = VDD, VDD = 1.0V

MIN.

2.0

-

-

-

TYP.

-

0.6

0.4

-

MAX.

5.5

1.0

0.8

0.5

UNIT

V

mA

µA

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