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Número de pieza | W91822N | |
Descripción | 13-MEMORY TONE/PULSE DIALER WITH HANDFREE/ LOCK AND HOLD FUNCTIONS | |
Fabricantes | Winbond | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de W91822N (archivo pdf) en la parte inferior de esta página. Total 22 Páginas | ||
No Preview Available ! 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
1 page W91820N SERIES
Pin Description, continued
SYMBOL 20-PIN 22-PIN I/O
FUNCTION
HFI, HFO
- 11, 12 I, O Handfree control pins.
A low pulse on the HFI input pin toggles the handfree
control state. The status of the handfree control state is
listed in the following table:
CURRENT STATE
NEXT STATE
HOOK SW. HFO INPUT HFO DIALING
-
On Hook
Low HFI
High HFI
High
Low
Yes
No
Off Hook High HFI
Low Yes
On Hook
- Off Hook Low Yes
Off Hook Low On Hook Low
No
Off Hook High On Hook High Yes
The HFI pin is pulled to VDD by an internal resistor.
A detailed timing diagram is shown in Figure 3.
BLOCK DIAGRAM
HKS
HFI
XT XT
SYSTEM CLOCK
GENERATOR
ROW
(R1 ~ R4, Vx/R5)
COLUMN
(C1 ~ C4, Vss)
KEYBOARD
INTERFACE
DTMF
D/A
CONVERTER
READ/WRITE
COUNTER
CONTROL
LOGIC
LOCK
MODE
LOCATION
LATCH
RAM
PULSE
CONTROL
LOGIC
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
T/P MUTE
KT
DP
HFO
H/P MUTE
Publication Release Date: May 1999
- 5 - Revision A2
5 Page W91820N SERIES
AC CHARACTERISTICS
PARAMETER
SYM.
CONDITIONS
MIN. TYP. MAX. UNIT
Key-in Debounce
Key Release Debounce
On-hook Debounce
TKID
TKRD
TOHD
-
-
Lock Mode
Unlock Mode
- 20 - mS
- 20 - mS
- 20 - mS
- 150 - mS
Pre-digit Pause1
TPDP1 Mode Pin = VDD
- 40 - mS
10 ppS Mode Pin = Floating
- 33.3 - mS
Pre-digit Pause2
TPDP2 Mode Pin = VDD
20 ppS Mode Pin = Floating
- 20 - mS
- 16.7 - mS
Inter Digit Pause
(Auto Dialing)
Interdigit Pause
TIDP 10 ppS
- 800 - mS
(W91820N/W91820AN/820LN
/820ALN/824N/824AN only)
20 ppS
- 500 - mS
(W91822N/822AN only)
TIDP 10 ppS
- 800 - mS
(Auto dialing)
20 ppS
- 500 - mS
Make/Break Ratio
M:B Mode Pin = VDD
Mode Pin = Floating
- 40:60 -
- 33.3:66.7 -
%
%
Tone Output Duration
Intertone Pause
TTD
TITP
-
-
- 93 - mS
- 93 - mS
Flash Break Time
TFB F1
F2
- 600 - mS
- 300 -
F3 - 73 -
F4 - 100 -
Flash Pause Time
TFP
-
- 1.0 - S
Pause Time
TP -
(W91824N/AN only)
- 3.6 - S
- 2.0 - S
Key Tone Frequency
Key Tone Duration
One-key Redialing
Pause Time
FKT
TKTD
TRP
-
-
-
- 1.2 - KHz
- 35 - mS
- 600 - mS
One-key Redialing
TRB
-
- 2.2 - S
Break Time
First Key-in Delay
TFKD Lock only
- 300 - mS
Notes:
1. Crystal parameters suggested for proper operation are Rs < 100 Ω, Lm = 96 mH, Cm = 0.02 pF, Cn = 5 pF, Cl = 18 pF,
Fosc. = 3.579545 MHz ±0.02%.
2. Crystal oscillator accuracy directly affects these times.
- 11 -
Publication Release Date: May 1999
Revision A2
11 Page |
Páginas | Total 22 Páginas | |
PDF Descargar | [ Datasheet W91822N.PDF ] |
Número de pieza | Descripción | Fabricantes |
W91822AN | 13-MEMORY TONE/PULSE DIALER WITH HANDFREE/ LOCK AND HOLD FUNCTIONS | Winbond |
W91822N | 13-MEMORY TONE/PULSE DIALER WITH HANDFREE/ LOCK AND HOLD FUNCTIONS | Winbond |
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