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Winbond

W91542N Datasheet Preview

W91542N Datasheet

10-MEMORY TONE/PULSE DIALER

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W91540N SERIES
10-MEMORY TONE/PULSE DIALER WITH SAVE,
KEYTONE, LOCK, AND HANDFREE FUNCTIONS
GENERAL DESCRIPTION
The W91540N series are tone/pulse switchable telephone dialers with 10 memories, keytone or lock
function, and handfree dialing control. These chips are fabricated using Winbond's high-performance
CMOS technology and thus offer good performance in low-voltage and low-power operations.
FEATURES
DTMF/pulse switchable dialer
Two by 32-digit redial and save memory
Ten by 16 digit two-touch indirect repertory memory
Pulse-to-tone (*/T) keypad for long distance call operation
Cascaded dialing
Uses 5 × 5 keyboard
Easy operation with redial, flash, pause, and */T keypads
Pause, PT (pulse-to-tone) can be stored as a digit in memory
0 or 9 dialing inhibition pin for PABX system or long distance dialing lock out
Dialing rate (10 ppS or 20 ppS) selected by bonding option
Minimum tone output duration: 93 mS (W91544AN: 87 mS)
Minimum intertone pause: 93 mS (W91544AN: 87 mS)
Pause time: 3.6 sec
300 mS off-hook delay in lock mode (DP remains low for 300 mS while off-hook)
Flash break time (73 mS, 100 mS, 300 mS, or 600 mS) selectable by keypad; pause time is 1.0 S
Make/break ratio (2:3 or 1:2) selectable by Mode pin
Key tone output for valid keypad entry recognition
On-chip power-on reset
Uses 3.579545 MHz crystal or ceramic resonator
Packaged in 18 or 20-pin DIP
Publication Release Date: May 1997
- 1 - Revision A2




Winbond

W91542N Datasheet Preview

W91542N Datasheet

10-MEMORY TONE/PULSE DIALER

No Preview Available !

W91540N SERIES
The different dialers in the W91540N series are shown in the following table:
TYPE NO.
W91540N
W91540AN
W91541LN
W91541ALN
W91542N
W91542AN
W91544AN
REPLACEMENT
TYPE NO.
W91540
W91541
W91540A
W91541A
W91541L
W91541AL
W91542
W91542A
New type
PULSE
(ppS)
10
10
10
10
20
20
10
FLASH
(mS)
600/300/73/100
600/300/73/100
600/300/73/100
600/300/73/100
600/300/73/100
600/300/73/100
600/300/73/100
M/B KEY HANDFREE LOCK PACKAGE
TONE DIALING
(PINS)
Pin Yes
-
- 18
Pin Yes
Yes
-
20
Pin -
- Yes 18
Pin -
Yes Yes 20
Pin Yes
-
- 18
Pin Yes
Yes
-
20
Pin Yes
Yes
-
20
Note: The W91544AN is designed specifically for use in France. The pause time is not added in pulse-to-tone mode.
PIN CONFIGURATIONS
C1
C2
C3
C4
KT
VSS
XT
XT
T/P MUTE
1
2
3
4
5
6
7
8
9
18 R4
17 R3
16 R2
15 R1
14 VDD
13 MODE
12 DTMF
11 DP/C5
10 HKS
W91540N/542N
C1
C2
C3
C4
KT
VSS
XT
XT
T/P MUTE
HFI
1
2
3
4
5
6
7
8
9
10
20 R4
19 R3
18 R2
17 R1
16 VDD
15 MODE
14 DTMF
13 DP/C5
12 HKS
11 HFO
W91540AN/542AN/544AN
-2-


Part Number W91542N
Description 10-MEMORY TONE/PULSE DIALER
Maker Winbond
Total Page 19 Pages
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