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W91550DNH Schematic ( PDF Datasheet ) - Winbond

Teilenummer W91550DNH
Beschreibung 13-MEMORY TONE/PULSE DIALER WITH LCD AND LOCK FUNCTION
Hersteller Winbond
Logo Winbond Logo 




Gesamt 32 Seiten
W91550DNH Datasheet, Funktion
W91550DN SERIES
13-MEMORY TONE/PULSE DIALER
WITH LCD AND LOCK FUNCTIONS
GENERAL DESCRIPTION
The W91550DN series are Si-gate CMOS IC tone/pulse switchable dialers containing 13 number
memories and a 10-digit LCD driver for displaying telephone numbers and calling time, including a
16-digit × 3 one-touch memory, 16-digit × 10 two-touch memory dialing, and 32-digit × 2 redial and
save memory. These dialers also provide a secrecy key, flash, two-way handfree dialing, one-key
redial, hold and lock functions.
FEATURES
Tone/pulse switchable dialer
Two by 32-digit redial and save memory (or mercury memory)
Three by 16-digit one-touch direct repertory memory
Ten by 16-digit two-touch indirect repertory memory
Memory check function
Save/mercury function selected by pin option
Typical interdigit pause (IDP): 800 msec (10 ppS) in pulse mode
Uses 4 × 7 keyboard
Mute key for secrecy control
Minimum tone output duration/inter-tone pause: 87/87 mS
Flash pause time: 1.2 sec.
Flash break time (98, 300, 600 msec) selectable by keypad
Pause time (2.0, 3.6, 4.0 sec.) selectable by mask option
Pulse-to-tone (*/T) keypad for long distance call operation
0 or 9 dialing inhibition pin for PABX system or long distance dialing lock out
Make/break ratio selected by pin option
Built-in 10-digit LCD driver for telephone number display and calling time (1/3 duty, 1/2 bias)
Built-in calling time from (00:00) to (59:59)
On-chip power-on reset and clear LCD
On hook debounce: 250 msec in normal mode (20 msec in lock mode)
First key-in delay: 300 msec in lock mode
Uses 3.579545 MHz crystal or ceramic resonator
Packaged in 64-pin QFP
The different dialers in the W91550DN series are shown in the following table:
TYPE NO.
W91550DNF
W91550DNF-1
W91550DNH
W91550DNH-1
FUNCTION
Default pause time is 3.6 sec. and all F1, F2, F3 are first priority.
Same as W91550DN except F3 can be stored as a digit.
Default pause time is 3.6 sec. and all F1, F2, F3 are first priority.
Same as W91550DN except F3 can be stored as a digit.
PACKAGE
QFP
QFP
Chip
Chip
Publication Release Date: November 1998
- 1 - Revision A3






W91550DNH Datasheet, Funktion
W91550DN SERIES
Pin Description, continued
SYMBOL PIN I/O
FUNCTION
COM1
COM3
62, 63, 2 O COM1COM3 are common signal output terminals for the 1/3 duty
LCD.
1(A, B, C)
10(A, B, C)
333
(unless
26-pin)
O 1(A, B, C) 10(A, B, C) are 10-digit segment signal output terminals.
BLOCK DIAGRAM
ROW
(R1 ~ R4)
COLUMN
(C1 ~ C6)
DTMF
XT XT
SYSTEM CLOCK
GENERATOR
KEYBOARD
INTERFACE
D/A
CONVERTER
READ/WRITE
COUNTER
CONTROL
LOGIC
LOCATION
LATCH
RAM
PULSE
CONTROL
LOGIC
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
BACKPLAN SIGNAL
GENERATOR
COM1 COM2 COM3
SEGMENT OUTPUT
DECODER
L.C.D.
HKS
B/M
MODE
LOCK
TEST
ATS
S/M
HFI
T/P MUTE
HPM MUTE
KMUTE
DP
HFO
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6 Page









W91550DNH pdf, datenblatt
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
VDDVSS
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
( VDDVSS = 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
- 12 -

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