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W91824AN Schematic ( PDF Datasheet ) - Winbond

Teilenummer W91824AN
Beschreibung 13-MEMORY TONE/PULSE DIALER WITH HANDFREE/ LOCK AND HOLD FUNCTIONS
Hersteller Winbond
Logo Winbond Logo 




Gesamt 22 Seiten
W91824AN Datasheet, Funktion
W91820N SERIES
13-MEMORY TONE/PULSE DIALER WITH
HANDFREE, LOCK AND HOLD FUNCTIONS
GENERAL DESCRIPTION
The W91820N is a series of tone/pulse switchable telephone dialers with 13 memory, keytone, hold,
lock, and handfree dialing control features. These chips are fabricated using Winbond's high-
performance CMOS technology and thus offer good performance in low-voltage, low-power
operations.
FEATURES
Tone/pulse switchable dialer
Two by 32 digits redial and save memory
Three by 32 digits one-touch direct repertory memory
Ten by 32 digits two-touch indirect repertory memory
Pulse-to-tone (*/T) keypad for long distance call operation
Chain 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
Dialing rate:10 ppS or 20 ppS by mask option
Minimum tone output duration: 93 mS (unless W91824N/AN is 87 mS)
Minimum intertone pause: 93 mS (unless W91824N/AN is 87mS)
Pause time: 3.6 sec. (unless W91824N/AN is 2.0 sec.)
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
Mute key for speech network mute
No key will be accepted except the "HOLD" key when in the Hold mode
Key tone output for valid keypad entry recognition
On-chip power-on reset
Uses 3.579545 MHz crystal or ceramic resonator
20, or 22-pin dual-in-line plastic package
The different dialers in the W91820N series are shown in the following table:
TYPE NO.
W91820N/824N
W91820AN/824AN
W91820LN
W91820ALN
W91822N
W91822AN
PULSE (ppS)
10
10
10
10
20
20
LOCK
-
-
-
-
KEY TONE
-
-
HANDFREE DIALING
-
-
-
PACKAGE (PINS)
20
22
20
22
20
22
Note: W91824N/824AN for French only.
Publication Release Date: May 1999
- 1 - Revision A2






W91824AN Datasheet, Funktion
W91820N SERIES
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1 C2 C3 C4 VSS
1 2 3 S EM1 R1
4 5 6 F4 EM2 R2
7 8 9 A EM3 R3
*/T 0
# R/P SAVE R4
F1 F2 F3 H
Vx/R5
S: Store function key
A: Indirect repertory memory dialing function key
H: Hold function key
R/P: Redial and pause function key
*/T: * in tone mode and PT key in pulse mode
SAVE: Save function key for one-touch 32-digit memory
EM1, ..., EM3: Emergency one-touch memory key
F1, ..., F4: Flash function keys: F1 = 600 mS, F2 = 300 mS, F3 = 73 mS, F4 = 100 mS; all flash
pause time is 1.0 mS
Note: D1, ..., Dn, D1`, ..., Dn`, */T, #, Mn: EM1, ..., EM3, Ln: 09
Normal Dialing
OFF HOOK (or ON HOOK & HFI
), D1 , D2 , , Dn
1. D1, D2, , Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits in normal dialing.
Redialing Dialing
OFF HOOK (or ON HOOK & HFI
, D1 , D2 , , Dn , BUSY
Come ON HOOK , OFF HOOK (or ON HOOK & HFI
), R/P
The R/P key can execute redial function only as first key-in after off-hook. Otherwise, it will invoke
the pause function.
The below cases are selected by mask option for W91824N/AN (French version) only.
In tone mode:
D1, D2, D3,*(or #), D4, D5, D6
The chip will only output D1, D2, D3 and ignore *(or #), D4, D5, D6.
In pulse mode:
D1, D2, D3, */T, D4, D5, D6
-6-

6 Page









W91824AN pdf, datenblatt
W91820N SERIES
TIMING WAVEFORMS
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
KT
DTMF
OSC.
4
TKID
B
TPDP
M
2
TIDP M B
TIDP
LOW
OSC.
2
TKID
TIDP
TPDP
OSC.
Figure 1(a). Pulse Mode Tming Diagram (Normal dialing without lock function)
HKS
KEY IN
DP
T/P MUTE
(long mute)
H/P MUTE
DTMF
OSC.
300 mS
TFKD
4
MB
2
T IDP
MB
TIDP
LOW
OSC.
2
TKID
TIDP
TPDP
OSC.
Figure 1(b). Pulse Mode Timing Diagram (Normal dialing with lock function)
- 12 -

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