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Teilenummer | W91824AN |
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Beschreibung | 13-MEMORY TONE/PULSE DIALER WITH HANDFREE/ LOCK AND HOLD FUNCTIONS | |
Hersteller | Winbond | |
Logo | ||
Gesamt 22 Seiten 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, P→T (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
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 P→T 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: 0−9
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 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 -
12 Page | ||
Seiten | Gesamt 22 Seiten | |
PDF Download | [ W91824AN Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
W91824AN | 13-MEMORY TONE/PULSE DIALER WITH HANDFREE/ LOCK AND HOLD FUNCTIONS | Winbond |
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