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W91820ALN PDF даташит

Спецификация W91820ALN изготовлена ​​​​«Winbond» и имеет функцию, называемую «13-MEMORY TONE/PULSE DIALER WITH HANDFREE/ LOCK AND HOLD FUNCTIONS».

Детали детали

Номер произв W91820ALN
Описание 13-MEMORY TONE/PULSE DIALER WITH HANDFREE/ LOCK AND HOLD FUNCTIONS
Производители Winbond
логотип Winbond логотип 

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W91820ALN Даташит, Описание, Даташиты
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









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W91820ALN Даташит, Описание, Даташиты
PIN CONFIGURATIONS
W91820N SERIES
C1
C2
C3
C4
KT
H/P MUTE
VSS
XT
XT
T/P MUTE
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
W91820N/822N
/824N
R4
R3
R2
R1
N.C.
VDD
MODE
DTMF
DP
HKS
C1
C2
C3
C4
KT
H/P MUTE
VSS
XT
XT
T/P MUTE
HFI
1
2
3
4
5
6
7
8
9
10
11
22 R4
21 R3
20 R2
19 R1
18 N.C.
17 VDD
16 MODE
15 DTMF
14 DP
13 HKS
12 HFO
W91820AN/822AN
/824AN
C1
C2
C3
C4
LOCK
H/P MUTE
VSS
XT
XT
T/P MUTE
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
W91820LN
R4
R3
R2
R1
N.C.
VDD
MODE
DTMF
DP
HKS
C1
C2
C3
C4
LOCK
H/P MUTE
VSS
XT
XT
T/P MUTE
HFI
1 22
2 21
3 20
4 19
5 18
6 17
7 16
8 15
9 14
10 13
11 12
W91820ALN
R4
R3
R2
R1
N.C.
VDD
MODE
DTMF
DP
HKS
HFO
-2-









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W91820ALN Даташит, Описание, Даташиты
W91820N SERIES
PIN DESCRIPTION
SYMBOL 20-PIN 22-PIN I/O
FUNCTION
Column-
Row
Inputs
14 14 I The keyboard input is compatible with a standard 5 × 5
&&
keyboard, an inexpensive single contact (Form A) keyboard,
1720 1922
and electronic input.
In normal operation, any single button can be pushed to
produce dual tone, pulses, or functions. Activation of two or
more buttons will result in no response except for a single
tone.
XT 8 8 I A built-in inverter together with an inexpensive 3.579545 MHz
crystal supplies the oscillator. The oscillator stops when there
is no keypad input. The crystal frequency deviation is 0.02%.
XT 9 9 O Crystal oscillator output pin.
T/P
MUTE
10 10 O The T/P MUTE is a conventional CMOS N-channel open
drain output.
The output transistor turns on with a low level during a dialing
sequence (both pulse and tone mode). Otherwise, it is off.
N.C.
16 18 - No connect
MODE
14 16 I Connecting the mode pin to VSS places the dialer in tone
mode.
Connecting the mode pin to VDD places the dialer in pulse
mode with an M/B ratio of 40:60.
Leaving the mode pin floating places the dialer in pulse mode
with an M/B ratio of 33.3:66.7.
HKS
11 13 I The HKS (hook switch) input is used to sense whether the
handset is on-hook or off-hook.
In on-hook state, HKS = 1: chip is in sleeping mode, no
operation.
In off-hook state, HKS = 0: chip is enabled for normal
operation.
KT
(W91820N/8
20AN/822N/
824N/822AN
/824AN only)
5
HKS pin is pulled to VDD by internal resistor.
5 O The key tone output is a conventional CMOS inverter. The
key tone is generated when any valid key is pressed; the KT
pin generates a 1.2 KHz square wave at 35 mS. When no key
is pressed, the KT pin remains in low state.
Publication Release Date: May 1999
- 3 - Revision A2










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