W91440NS [WINBOND]
Telephone Dialer ; 电话拨号器\n
| 型号： | W91440NS |
| 厂家： | 
WINBOND |
| 描述： | Telephone Dialer
|
| 文件： | 总14页 (文件大小：162K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
W91440N SERIES
10-MEMORY TONE/PULSE DIALER
WITH SAVE FUNCTION
GENERAL DESCRIPTION
The W91440N series are Si-gate CMOS ICs that provide the necessary signals for either tone or
pulse dialing. The W91440N series features save memory and a 10 by 16 digit automatic dialing
memory.
FEATURES
· DTMF/pulse switchable dialer
· Two by 32 digit redial and save memory
· Ten
by 16 digit two-touch direct memory
· Redial memory cascadable with normal dialing; dialing length is unlimited, but if length
oversteps 32 digits the redial function is inhibited
·
Pulse-to-tone (*/T) keypad for long distance call operation
·
Uses 5 ´ 5 keyboard
·
Easy operation with redial, flash, pause and */T keypads
·
Flash, pause, P® T (Pulse-to-tone) can be stored as a digit in memory
·
Dialing rate (10, 20 ppS ) selected by bonding option
· On-hook debounce time: 150 msec.
·
Minimum tone output duration: 93 msec.
·
Minimum intertone pause: 93 msec.
·
Flash break time (73, 100, 300, 600 msec.) selectable by keypad, and the pause time is 1 sec.
·
On-chip power-on reset
·
Uses 3.579545 MHz crystal or ceramic resonator
·
Packaged in 18-pin plastic DIP
· The different dialers in the W91440N series are shown in the following table:
TYPE NO.
REPLACEMENT
TYPE NO.
PULSE
(ppS)
FLASH
(mS)
PAUSE
(S)
M/B
W91442N
W91442
W91443
W91444
W91446
W91447
W91444G
W91445G
W91443
10
600/300/73/100
3.6
Pin
W91443N
20
600/300/73/100
3.6
Pin
Publication Release Date: May 1997
Revision A3
- 1 -
W91440N SERIES
PIN CONFIGURATION
1
18
17
16
15
14
13
12
11
10
C1
C2
C3
C4
C5
R4
R3
R2
R1
V
2
3
4
5
6
DD
V
SS
MODE
DTMF
7
8
9
XT
DP
XT
HKS
T/P MUTE
PIN DESCRIPTION
SYMBOL
Column-
Row
PIN
I/O
FUNCTION
1- 5
&
The keyboard inputs may be used with either a standard 5 ´ 5
keyboard or an inexpensive single contact (Form A) keyboard.
Electronic input from a mC can also be used.
I
Inputs
15- 18
A valid key in is defined as a single row being connected to a single
column.
7, 8
9
I, O A built-in inverter provides oscillation with an inexpensive 3.579545
MHz crystal or ceramic resonator.
XT, XT
T/P
O
The T/P MUTE is a conventional CMOS N-channel open drain output.
MUTE
The output transistor is switched on during dialing sequence and flash
break time. Otherwise, it is switched off.
MODE
13
I
Pulling mode pin to VSS places the dialer in tone mode.
Pulling mode pin to VDD places the dialer in pulse mode with M/B ratio
40:60 (10 ppS only for W91442N and 20 ppS for W91443N).
Floating mode pin places the dialer in pulse mode with M/B ratio 33:67
(10 ppS only for W91442N and 20 ppS for W91443N).
- 2 -
W91440N SERIES
Pin Description, continued
SYMBOL
PIN
I/O
FUNCTION
10
I
Hook switch input.
HKS
HKS = VDD: On-hook state. Chip in sleeping mode, no operation.
HKS = VSS: Off-hook state. Chip is enabled for normal operation.
HKS pin is pulled to VDD by internal resistor.
N-channel open drain dialing pulse output.
11
O
DP
Flash key will cause DP to be active in either tone mode or pulse
mode.
The timing diagram in pulse mode is shown in Figure 1(a, b, c).
Power input pins.
VDD, VSS
DTMF
14, 6
12
I
O
In pulse mode, this pin remains in low state at all time.
In the tone mode, it will output a dual or single tone.
Detailed timing diagram for tone mode is shown in Figure 2(a, b, c).
Output Frequency
Specified
Actual
Error %
R1
R2
699
+0.28
697
766
-0.52
770
R3
R4
C1
C2
C3
848
948
-0.47
+0.74
+0.57
852
941
1216
1209
1336
1477
1332
1472
-0.30
-0.34
Publication Release Date: May 1997
Revision A3
- 3 -
W91440N SERIES
BLOCK DIAGRAM
XT
XT
HKS
SYSTEM CLOCK
GENERATOR
CONTROL
LOGIC
MODE
READ/WRITE
COUNTER
ROW
(R1 to R4, Vx)
KEYBOARD
INTERFACE
COLUMN
(C1 to C5)
T/P MUTE
DP
PULSE
RAM
CONTROL
LOGIC
LOCATION
LATCH
ROW & COLUMN
PROGRAMMABLE
COUNTER
D/A
DATA LATCH
& DECODER
DTMF
CONVERTER
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
1
C2
C3
3
C4
S
C5
2
5
R1
R2
R3
4
6
F4
A
7
8
9
0
#
R/P SAVE R4
VX
*/T
F1
F2
F3
· S: Store function key
· A: Indirect repertory dialing function key
· R/P: Redial and pause function key
· SAVE: Save function key
· */T: * in tone mode and P® T in pulse mode
· F1, ..., F4: Flash keys, F1 = 600 mS, F2 = 300 mS, F3 = 73 mS, F4 = 100 mS
Note: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, #;Ln: 0, ..., 9; Fn: F1, ..., F4
- 4 -
W91440N SERIES
Normal Dialing
OFF HOOK
1. D1, D2, ¼ , Dn will be dialed out.
,
D1
,
D2 , ..., Dn
2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits in normal dialing.
Redialing
OFF HOOK
,
D1
,
D2 , ..., Dn Busy, Come
ON HOOK
,
OFF HOOK
,
R/P
1. The redial memory content will be dialed out.
2. The R/P key can execute the redial function only as the first key-in after off-hook; otherwise,
it executes pause function.
3. If redialing length oversteps 32 digits, the redialing function will be inhibited.
Number Store
OFF HOOK
,
D1
,
D2 , ..., Dn
,
S
,
S
,
Ln
1. If the sequence of the dialed digits D1, D2, ..., Dn has not
finished,
S
will be ignored.
2. D1, D2, ..., Dn will be stored in memory location and dialed out.
OFF HOOK
,
S
,
D1
,
D2 , ..., Dn
,
S
,
Ln
3. D1, D2, ..., Dn will be stored in memory location but will not be dialed out.
4. R/P and */T keys can be stored as a digit in memory.
In store mode, R/P is the pause function key; */T is the pulse to tone function key.
5. The store mode is released after the store function is executed or when the state of the hook
switch is changed.
Repertory Dialing
OFF HOOK
,
A
,
Ln
Access Pause
OFF HOOK
,
D1
,
D2
,
R/P
,
D3 , ..., Dn
1. The pause function can be stored as a digit in memory.
2. The pause function is executed in normal dialing, redial dialing, or memory dialing.
3. A detailed timing diagram for the pause function is shown in Figure 3.
Publication Release Date: May 1997
Revision A3
- 5 -
W91440N SERIES
Pulse-to-tone (*/T)
OFF HOOK D1
,
,
D2 , ..., Dn
,
*/T
,
D1'
,
D2' , ..., Dn'
1. If the mode switch is set in pulse mode, then the output signal will be:
D1, D2, ¼ , Dn, Pause (3.6 sec.), D1', D2', ¼ , Dn'
(Pulse)
(Tone )
2. If the mode switch is set in tone mode, then the output signal will be the form as follow:
D1, D2, ..., Dn, *, D1', D2', ..., Dn'
(Tone)
(Tone)
3. The dialer remains in tone mode when the digits have been dialed out and can be reset to pulse
mode by going on-hook.
4. The pulse-to-tone function timing diagram is shown in Figure 4.
Flash
OFF HOOK
,
Fn
1. Fn = F1, ¼ , F4
2. The dialer will execute flash break time of 600 mS (F1), 300 mS (F2), 73 mS (F3), or 100 mS (F4)
and all the flash pause time is 1.0 sec. before the next digit is dialed out.
3. Flash key can be stored as a digit in memory; however, only one flash will be released to users.
4. The system will return to the initial state after the flash pause time is finished.
5. The timing diagram of flash function is shown in Figure 5.
Save
OFF HOOK
,
D1
,
D2 , ..., Dn
,
SAVE
1. If the dialing
of
D1 to Dn is finished, pressing the SAVE key will cause D1 to Dn to
be copied to the save memory.
OFF HOOK SAVE
,
2. D1 to Dn will be dialed out after the save key is pressed.
Cascaded Dialing
1. Normal Dialing + Repertory Dialing
+
Normal Dialing
2. Repertory Dialing
3. Redialing
+
Normal Dialing
+
Repertory Dialing
+
Normal
Dialing
+
Repertory Dialing
4. Redialing is valid as first key-in only.
- 6 -
W91440N SERIES
ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Supply Voltage
SYMBOL
RATING
UNIT
V
VDD- VSS
VIL
-0.3 to +7.0
VSS - 0.3
VDD +0.3
VSS - 0.3
VDD +0.3
120
V
Input/Output Voltage
VIH
V
VOL
V
VOH
PD
V
Power Dissipation
mW
°C
°C
Operation Temperature
Storage Temperature
TOPR
TSTG
-20 to +70
-55 to +150
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.
DC CHARACTERISTICS
(VDD- VSS = 2.5V, FOSC. = 3.579545 MHz, TA = 25° C, all outputs unloaded)
PARAMETER
Operating Voltage
Operating Current
SYMBOL
VDD
CONDITIONS
-
MIN. TYP. MAX.
UNIT
V
2.0
-
5.5
0.60
0.40
15
IOP
Tone, Unloaded
Pulse, Unloaded
-
-
-
0.4
0.2
-
mA
Standby Current
ISB
mA
mA
HKS
= VSS, No load &
No key entry
Memory Retention
Current
IMR
-
-
0.2
HKS
= VDD,
VDD = 1.0V
Row group,
RL = 5 KW
DTMF Output Voltage
Pre-emphasis
VTO
130
1
150
2
170
3
mVrms
dB
Col/Row,
VDD = 2.0 to 5.5V
DTMF Distortion
THD
VTDC
ITL
-
-30
-23
3.0
-
dB
V
RL = 5 KW,
VDD = 2.0 to 5.5V
DTMF Output DC Level
1.0
0.2
-
-
RL = 5 KW,
VDD = 2.0 to 5.5V
DTMF Output Sink
Current
VTO = 0.5V
mA
Publication Release Date: May 1997
Revision A3
- 7 -
W91440N SERIES
DC Characteristics, continued
PARAMETER
SYMBOL
CONDITIONS
VPO = 0.5V
MIN. TYP. MAX.
UNIT
IPL
0.5
0.5
-
-
-
-
mA
DP
Output Sink Current
MUTE
ITML
VTMO = 0.5V
mA
T/P
Current
Output Sink
Keypad Input Drive
Current
IKD
IKS
VI = 0.0V
VI = 2.5V
-
30
200
-
-
-
-
-
mA
mA
Keypad Input Sink
Current
400
300
RHK
KW
HKS
I/P Pull-High
Resistor
Keypad Resistance
RK
-
-
-
5.0
KW
AC CHARACTERISTICS
(VDD- VSS = 2.5V, FOSC. = 3.579545 MHz, TA = 25° C, all outputs unloaded)
PARAMETER
Key in Debounce
SYMBOL
TKID
CONDITIONS
MIN.
TYP.
20
MAX.
UNIT
mS
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Key Release Debounce
Pulse Mute Delay
TKRD
20
mS
TMD
Mode = VDD
40
mS
Mode = Floating
Mode = VDD
Mode = Floating
Mode = VDD
Mode = Floating
10 ppS
33.3
40
Pre-digit-pause1
Pre-digit-pause2
TPDP1
10 ppS
TPDP2
20 ppS
TIDP
mS
mS
mS
%
33.3
20
16.7
800
500
40:60
33:67
93
Interdigit Pause
(Auto Dialing)
20 ppS
Make/Break Ratio
M:B
Mode = VDD
Mode = Floating
Auto dialing
Auto dialing
F1
Tone Output Duration
Intertone Pause
TTD
TITP
TFB
mS
mS
93
Flash Break Time
600
300
73
F2
mS
F3
F4
100
-
-
- 8 -
W91440N SERIES
AC Characteristics, continued
PARAMETER
SYMBOL
TFP
CONDITIONS
F1, F2, F3, F4
MIN.
TYP.
1.0
MAX.
UNIT
Flash Pause Time
Pause Time
S
S
S
-
-
-
-
-
-
TP
3.6
On-hook Debounce
Time
TOHD
150
Notes:
1. Crystal parameters suggested for proper operation are Rs < 100 ohms, 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.
TIMING WAVEFORMS
HKS
T
KRD
3
4
2
2
KEY IN
DP
T
T
KID
KID
M B
B
M
T
T
T
IDP
IDP
IDP
T
IDP
T
PDP
T
PDP
T/P MUTE
DTMF
Low
OSCILLATION
OSCILLATION
OSC.
Figure 1(a) Normal Dialing Timing Diagram
Publication Release Date: May 1997
Revision A3
- 9 -
W91440N SERIES
Timing Waveforms, continued
HKS
KEY IN
DP
T<T OHD
TKRD
R/P
TKID
M
B
M
B
TIDP
TIDP
TIDP
TPDP
T/P MUTE
Low
DTMF
OSC.
OSCILLATION
Figure 1(b) Pulse Mode Auto Dialing Timing Diagram
HKS
T >
TOHD
TKRD
R/P
KEY IN
DP
TKID
M
B
M
B
TIDP
TIDP
TPDP
T/P MUTE
DTMF
Low
OSCILLATION
OSC.
Figure 1(c) Pulse Mode Auto Dialing Timing Diagram
- 10 -
W91440N SERIES
Timing Waveforms, continued
HKS
TKRD
5
3
4
2
KEY IN
DTMF
TKID
TTD
TITP
TITP
TITP
T/P MUTE
High
DP
OSCILLATION
OSCILLATION
OSC.
Figure 2(a) Tone Mode Normal Dialing Timing Diagram
HKS
TKRD
T<TOHD
R/P
TKID
KEY IN
DTMF
TTD
TITP
TITP
T/P MUTE
High
DP
OSCILLATION
OSC.
Figure 2(b) Tone Mode Auto Dialing Timing Diagram
Publication Release Date: May 1997
Revision A3
- 11 -
W91440N SERIES
Timing Waveforms, continued
HKS
T >
TOHD
TKRD
R/P
TKID
KEY IN
DTMF
TTD
TITP
T/P MUTE
DP
High
OSCILLATION
OSC.
Figure 2(c) Tone Mode Auto Dialing Timing Diagram
HKS
2
R/P
3
KEY IN
DP
TIDP
TKID
MB
MB
TIDP
PDP
T
TPDP
TP
T/P MUTE
Low
DTMF
OSC.
OSCILLATION
Figure 3. Pause Function Timing Diagram
- 12 -
W91440N SERIES
Timing Waveforms, continued
HKS
2
T
*/T
3
KEY IN
DP
KID
MB
TIDP
TPDP
TP
T/P MUTE
DTMF
OSC.
TITP
OSCILLATION
Figure 4. Pulse-to-tone Timing Diagram
Low
HKS
3
F
F
KEY IN
TFB
TKID
DP
TFP
TFP
T/P MUTE
DTMF
OSC.
TITP
OSCILLATION
Figure 5. Flash Timing Diagram
Publication Release Date: May 1997
Revision A3
- 13 -
W91440N SERIES
Winbond Electronics (H.K.) Ltd.
Winbond Electronics North America Corp.
Winbond Memory Lab.
Winbond Microelectronics Corp.
Winbond Systems Lab.
Headquarters
No. 4, Creation Rd. III,
Science-Based Industrial Park,
Hsinchu, Taiwan
TEL: 886-3-5770066
FAX: 886-3-5792697
http://www.winbond.com.tw/
Voice & Fax-on-demand: 886-2-7197006
Rm. 803, World Trade Square, Tower II,
123 Hoi Bun Rd., Kwun Tong,
Kowloon, Hong Kong
TEL: 852-27513100
FAX: 852-27552064
2730 Orchard Parkway, San Jose,
CA 95134, U.S.A.
TEL: 1-408-9436666
FAX: 1-408-9436668
Taipei Office
11F, No. 115, Sec. 3, Min-Sheng East Rd.,
Taipei, Taiwan
TEL: 886-2-7190505
FAX: 886-2-7197502
Note: All data and specifications are subject to change without notice.
Publication Release Date: May 1997
Revision A3
- 15 -
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