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PDF W91822N Data sheet ( Hoja de datos )

Número de pieza W91822N
Descripción 13-MEMORY TONE/PULSE DIALER WITH HANDFREE/ LOCK AND HOLD FUNCTIONS
Fabricantes Winbond 
Logotipo Winbond Logotipo



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No Preview Available ! W91822N Hoja de datos, Descripción, Manual

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

1 page




W91822N pdf
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





W91822N arduino
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 , 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







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