W91520A [ETC]
Tone/Pulse Telephone Dialer ; 音频/脉冲拨号电话\n
| 型号： | W91520A |
| 厂家： | 
ETC |
| 描述： | Tone/Pulse Telephone Dialer
|
| 文件： | 总16页 (文件大小：193K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
W91520N SERIES
TONE/PULSE DIALER WITH HANDFREE
AND HOLD FUNCTIONS
GENERAL DESCRIPTION
The W91520N series are Si-gate CMOS ICs that provide the necessary signals for tone or pulse
dialing. The W91520N series provide one-key redial, handfree dialing, hold, save, and redial
functions.
FEATURES
·
DTMF/pulse switchable dialer
·
Two by 32-digit redial and save memory
·
Pulse-to-tone (*/T) keypad for long distance call operation
·
Uses 5 ´ 5 keyboard
·
Easy operation with redial, flash, pause, and */T keypads
·
Pause, pulse-to-tone (*/T) can be stored as a digit in memory
· On-hook debounce time: 150 mS
·
Dialing rate (10 ppS, or 20 ppS) selectable by bonding option
·
Minimum tone output duration: 93 msec.
·
Minimum intertone pause: 93 msec.
·
Flash break time (73, 100, 300, 600 msec.) selectable by keypad; pause time is 1.0 sec.
·
On-chip power-on reset
·
Uses 3.579545 MHz crystal or ceramic resonator
·
Packaged in 18 or 20-pin plastic DIP
· The different dialers in the W91520N series are shown in the following table:
TYPE NO.
REPLACEMENT PULSE
FLASH
(mS)
M/B HANDFREE
DIALING
PACKAGE
(PINS)
TYPE NO.
(ppS)
W91520N
W91521N
W91520AN
W91521AN
W91520
10
600/100/300/73
600/100/300/73
600/100/300/73
600/100/300/73
Pin
Pin
Pin
Pin
-
18
18
20
20
W91521
20
-
W91520A
W91521A
10
Yes
Yes
20
Publication Release Date: May 1997
Revision A3
- 1 -
W91520N SERIES
PIN CONFIGURATIONS
1
20
19
18
17
16
C1
C2
R4
R3
R2
R1
1
C1
18
17
16
15
14
13
12
11
10
R4
R3
R2
R1
2
3
4
5
6
7
2
3
4
5
6
C2
C3
C3
C4
C4
H/P MUTE
V
DD
V
DD
H/P MUTE
VSS
V
SS
MODE
DTMF
15
14
MODE
DTMF
XT
7
8
9
XT
8
9
13
12
11
XT
T/P MUTE
HFI
DP/C5
HKS
DP/C5
HKS
XT
T/P MUTE
HFO
10
W91520N/W91521N
W91520AN/W91521AN
PIN DESCRIPTION
SYMBOL
Column-
Row
18-PIN
20-PIN
I/O
FUNCTION
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. A valid key-in is defined as a single
row being connected to a single column.
1- 4
&
1- 4
&
I
Inputs
15- 18
17- 20
7, 8
9
7, 8
9
I, O A built-in inverter provides oscillation with an
inexpensive 3.579545 MHz crystal or ceramic
resonator.
XT, XT
O
T/P MUTE
The T/P MUTE is a conventional CMOS N-channel
open drain output.
The output transistor is switched on during dialing
sequence, one-key redial break, and flash break time.
Otherwise, it is switched off.
MODE
13
15
I
Pulling mode pin to VSS places the dialer in tone
mode.
Pulling mode pin to VDD places the dialer in pulse
mode (10 ppS; 20 ppS for W91521N/521AN, M/B =
40:60).
Floating mode pin places the dialer in pulse mode
(10 ppS; 20 ppS for W91521N/521AN, M/B =
33.3:66.7).
- 2 -
W91520N SERIES
Pin Description, continued
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
10
12
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
13
O
DP / C5
Flash key will cause DP to be active in either tone
mode or pulse mode.
The timing diagram for pulse mode is shown in Figure
1(a, b, c).
VDD, VSS
14, 6
5
16, 6
5
I
Power input pins.
H/P MUTE
O
The H/P MUTE is a conventional inverter output.
During pulse dialing, flash break, one-key redial break,
and hold period, this output is active high; otherwise, it
remains in low state.
DTMF
12
14
O
In pulse mode, this pin remains in low state at all times.
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
697
Actual
699
Error %
R1
R2
+0.28
-0.52
770
766
R3
R4
C1
C2
C3
-0.47
+0.74
+0.57
852
941
848
948
1209
1216
-0.30
-0.34
1336
1477
1332
1472
Publication Release Date: May 1997
Revision A3
- 3 -
W91520N SERIES
Pin Description, continued
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
-
10, 11
I, O Handfree control pins. The handfree control state is
HFI, HFO
toggled on by a low pulse on the HFI input pin. The
status of the handfree control state is described in the
following table:
CURRENT STATE
NEXT STATE
Input
Dialing
Yes
Hook SW.
HFO
HFO
High
Low
HFI
HFI
High
On Hook
Off Hook
Low
No
High
Low
Low
Low
High
Yes
Yes
No
HFI
On Hook
Off Hook
Off Hook
Low
On Hook
On Hook
High
Yes
Off Hook
HFI pin is pulled to VDD by an internal resistor.
Detailed timing diagrams are shown in Figure 3.
BLOCK DIAGRAM
XT
XT
HKS
HFI
SYSTEM CLOCK
GENERATOR
CONTROL
LOGIC
MODE
READ/WRITE
COUNTER
ROW
(R1 to R4, Vx)
KEYBOARD
INTERFACE
H/P MUTE
T/P MUTE
COLUMN
(C1 to C4)
PULSE
CONTROL
LOGIC
RAM
LOCATION
LATCH
DP/C5
HFO
ROW & COLUMN
PROGRAMMABLE
COUNTER
D/A
CONVERTER
DATA LATCH
& DECODER
DTMF
- 4 -
W91520N SERIES
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
C2
C3
C4
DP / C5
1
4
2
5
8
0
R
3
6
SAVE
F1
R1
R2
R3
R4
VX
7
9
F2
H
R
#
R/P1
F4
*/T
R/P2
F3
· R/P1, R/P2: Redial and pause function key; P1 is 3.6 sec. and P2 is 2.0 sec.
· */T: * in tone mode and P® T in pulse mode
· F1, ..., F4: Flash keys, flash break time of F1 = 600 mS, F2 = 100 mS, F3 = 300 mS, F4 = 73 mS
· H: Hold function key
· SAVE: Save function key
· R: One-key redial function
Notes:
D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, #
R/P: R/P1 or R/P2.
Fn: F1, ..., F4
Normal Dialing
OFF HOOK (or ON HOOK
&
), D1
,
D2 , ..., Dn
¡ õ
HFI
1. D1, D2, ..., Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if length exceeds 32 digits in normal dialing.
Redialing
1. OFF HOOK (or ON HOOK
&
), D1
&
,
D2 , ..., Dn , Busy, Come
), R/P
¡ õ
HFI
ON
,
OFF HOOK (or ON
HOOK
¡ õ
HFI
HOOK
a. The redial memory content will be dialed out.
b. The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it
executes pause function.
c. If redialing length exceeds 32 digits, the redialing function will be inhibited.
2. OFF HOOK (or ON HOOK
&
), D1
,
D2 , ..., Dn , Busy,
R
¡ õ
HFI
a. The one-key redialing function timing diagram is shown in Figure 4.
Publication Release Date: May 1997
Revision A3
- 5 -
W91520N SERIES
b. If the dialing D1 to Dn is finished, pressing the R key will cause the pulse output pin
of
to
go low for 2.2 seconds break time and 0.6 seconds pause time will automatically be added.
c. If the pulses of the dialed digits D1 to Dn have not finished, R will be ignored.
d. The redial function by R key has no break time (2.2 sec.) if it is the first key-in after off-hook.
e. The R key uses the same redial buffer as the redial function by R/P1 or R/P2 key,
the
and it is active during normal dialing or repertory dialing.
Access Pause
OFF HOOK (or ON HOOK
&
), D1
,
D2
,
R/P
,
D3 , ..., Dn
¡ õ
HFI
1. The pause function is executed in normal dialing, redial dialing, or memory dialing.
2. The pause duration of 2.0 or 3.6 seconds per pause is selected by keypad, but only one pause time
can be stored in memory
3. A detailed timing diagram for the pause function is shown in Figure 5.
Pulse-to-tone (*/T)
OFF HOOK (or ON HOOK
&
), D1
,
D2 , ..., Dn
,
*/T
,
D1'
¡ õ
HFI
,
D2' , ..., Dn'
1. If the mode switch is set to pulse mode, then the output signal will be:
D1, D2, ..., Dn, Pause (2.0 sec. or 3.6 sec.), D1', D2', ..., Dn'
(Pulse)
(Tone )
2. If the mode switch is set to tone mode, then the output signal will be:
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 only by going on-hook.
4. The pulse-to-tone function timing diagram is shown in Figure 6.
Save
OFF HOOK (or ON HOOK
&
), D1
,
D2 , ..., Dn
,
SAVE
¡ õ
HFI
1. D1, D2, ..., Dn will be dialed out.
2. If the sequence of the dialed digits D1, D2, ..., Dn has not
SAVE will be ignored;
- 6 -
W91520N SERIES
finished,
otherwise, D1, D2, ..., Dn will be duplicated to the save memory.
Flash
OFF HOOK (or ON HOOK
&
), Fn
¡ õ
HFI
1. Fn = F1, ..., F4
2. The dialer will execute a flash break time of 600 mS (F1), 100 mS (F2), 300 mS (F3), or 73 mS
(F4). In each case the flash pause time is 1.0 sec. before the next digit is dialed out.
3. Flash key cannot be stored as a digit in memory. The flash key has first priority among the
keyboard
functions.
4. The system will return to the initial state after the flash pause time is finished.
5. The flash function timing diagram is shown in Figure 7.
HOLD
OFF HOOK (or ON HOOK
&
),
H
¡ õ
HFI
The HOLD is switched on and off by hold key. The other keypads will be disabled when in hold mode.
The function timing diagram is shown in Figure 3(a, b, c).
ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Supply Voltage
Input/Output Voltage
SYMBOL
VDD- VSS
VIL
RATING
-0.3 to +7.0
VSS -0.3
VDD +0.3
VSS -0.3
VDD +0.3
120
UNIT
V
V
VIH
V
VOL
V
VOH
V
Power Dissipation
PD
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.
Publication Release Date: May 1997
- 7 -
Revision A3
W91520N SERIES
DC CHARACTERISTICS
(VDD- VSS = 2.5V, FOSC. = 3.579545 MHz, TA = 25° C, all outputs unloaded)
PARAMETER
SYMBOL
CONDITIONS
MIN.
MAX.
UNIT
TYP.
-
Operating Voltage
Operating Current
VDD
IOP
-
2.0
5.5
0.6
0.4
15
V
Tone, Unloaded
Pulse, Unloaded
-
-
-
0.4
0.2
-
mA
Standby Current
ISB
IMR
VTO
mA
mA
HKS
= VSS, No load
& No key entry
Memory Retention
Current
-
-
0.2
HKS
= VDD,
VDD = 1.0V
DTMF Output Voltage
Pre-emphasis
Row group,
RL = 5 KW
130
1
150
170
3
mVrms
dB
Col/Row,
2
-30
-
VDD = 2.0 to 5.5V
DTMF Distortion
THD
VTDC
ITL
-
-23
3.0
-
dB
RL = 5 KW,
VDD = 2.0 to 5.5V
DTMF Output DC Level
1.0
0.2
V
RL = 5 KW,
VDD = 2.0 to 5.5V
DTMF Output Sink
Current
VTO = 0.5V
-
mA
IPL
VPO = 0.5V
0.5
0.5
-
-
-
-
mA
mA
DP
Output Sink Current
MUTE
ITML
VTMO = 0.5V
T/P
Output Sink
Current
H/P MUTE Output
Drive/Sink Current
IHPH
IHPL
IHFH
IHFL
IKD
VHPH = 2.0V
VHPL = 0.5V
VHFH = 2.0V
VHFL = 0.5V
VI = 0.0V
0.5
0.5
0.5
0.5
30
-
-
-
-
-
-
-
-
-
-
mA
mA
mA
mA
mA
HFO Drive/Sink Current
Keypad Input Drive
Current
Keypad Input Sink
Current
IKS
VI = 2.5V
-
200
-
400
300
-
-
mA
RHK
KW
HKS
I/P Pull-high
Resistor
Keypad Resistance
RK
-
-
-
5
KW
- 8 -
W91520N SERIES
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
mS
mS
mS
Key Release Debounce
On-hook Debounce
Pre-digit Pause1
TKRD
-
-
20
TOHD
150
40
TPDP1
10 ppS
TPDP2
20 ppS
TIDP
Mode = VDD
Mode = Floating
Mode = VDD
Mode = Floating
10 ppS
33.3
20
Pre-digit Pause2
mS
mS
%
16.7
800
500
40:60
33.3:66.7
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
100
300
73
F2
mS
F3
F4
-
-
-
-
-
-
-
-
-
-
Flash Pause Time
Pause Time
TFP
TP
F1, F2, F3, F4
R/P1
1.0
S
S
3.6
R/P2
2.0
One-key Redial Break
Time
TRB
TRP
-
2.2
S
One-key Redial Pause
Time
-
-
600
-
mS
Notes:
1. Crystal parameters suggested for proper operation are Rs < 100 W, 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.
Publication Release Date: May 1997
Revision A3
- 9 -
W91520N SERIES
TIMING WAVEFORMS
HKS
T
KRD
3
4
2
2
KEY IN
TKID
TKID
M B
B
M
DP
T
T
IDP
T
T
IDP
IDP
IDP
TPDP
TPDP
T/P MUTE
H/P MUTE
DTMF
Low
OSCILLATION
OSCILLATION
OSC.
Figure 1(a) Normal Dialing Timing Diagram
HKS
KEY IN
DP
T< T OHD
TKRD
R/P
TKID
M B
M B
T
IDP
T
IDP
T
IDP
TPDP
T/P MUTE
H/P MUTE
Low
DTMF
OSC.
OSCILLATION
Figure 1(b) Pulse Mode Auto Dialing Timing Diagram
- 10 -
W91520N SERIES
Timing Waveforms, continued
HKS
KEY IN
DP
T = TOHD
TKRD
R/P
TKID
M
B
B
M
T
IDP
TPDP
T/P MUTE
H/P MUTE
Low
DTMF
OSC.
OSCILLATION
Figure 1(c) Pulse Mode Auto Dialing Timing Diagram
HKS
TKRD
5
3
4
2
KEY IN
DTMF
TKID
TTD
TITP
TITP
TITP
T/P MUTE
H/P MUTE
High
DP
OSC.
OSCILLATION
OSCILLATION
Figure 2(a) Tone Mode Normal Dialing Timing Diagram
Publication Release Date: May 1997
Revision A3
- 11 -
W91520N SERIES
Timing Waveforms, continued
HKS
T
< T OHD
TKRD
R/P
TKID
KEY IN
DTMF
TTD
TITP
TITP
T/P MUTE
H/P MUTE
High
DP
OSC.
OSCILLATION
Figure 2(b) Tone Mode Auto Dialing Timing Diagram
HKS
T = TOHD
T
KRD
R/P
TKID
KEY IN
DTMF
TTD
TITP
T/P MUTE
H/P MUTE
High
DP
OSC.
OSCILLATION
Figure 2(c) Tone Mode Auto Dialing Timing Diagram
- 12 -
W91520N SERIES
Timing Waveforms, continued
HKS
H
1
2
H
H
H
H
KEY IN
MODE
DP
DTMF
MUTE
T/P
H/P MUTE
HFI
HFO
OSC
Figure 3. Handfree Function Timing Diagram
Publication Release Date: May 1997
Revision A3
- 13 -
W91520N SERIES
Timing Waveforms, continued
HKS
R
R
KEY IN
DP
T
KID
T
IDP
TKID
T
RB
B
MB
M
TRP
T
PDP
T
IDP
TPDP
HFI
HFO
T/P MUTE
H/P MUTE
Low
DTMF
OSC.
OSCILLATION
Figure 4. One-key Redial Timing Diagram
HKS
2
R/P
3
KEY IN
DP
T
IDP
TKID
M
M B
B
TPDP
TPDP
T/P MUTE
H/P MUTE
DTMF
TP
Low
OSC
OSC.
Figure 5. Pause Function Timing Diagram
- 14 -
W91520N SERIES
Timing Waveforms, continued
HKS
2
*/T
3
KEY IN
DP
TKID
M B
T
TPDP
IDP
TP
T/P MUTE
H/P MUTE
DTMF
OSC.
OSCILLATION
Figure 6. Pulse-to-tone Timing Diagram
Low
HKS
3
F
F
F
KEY IN
T
KID
T
FP
DP
T
T
KID
T
FB
KID
HFI
T
FB
HFO
T/P MUTE
H/P MUTE
DTMF
T
ITP
OSCILLATION
OSC.
Figure 7. Flash Timing Diagram
Publication Release Date: May 1997
Revision A3
- 15 -
W91520N SERIES
Winbond Electronics (H.K.) Ltd.
Winbond Electronics North America Corp.
Headquarters
Rm. 803, World Trade Square, Tower II, Winbond Memory Lab.
No. 4, Creation Rd. III,
Science-Based Industrial Park,
Hsinchu, Taiwan
TEL: 886-3-5770066
FAX: 886-3-5792697
123 Hoi Bun Rd., Kwun Tong,
Winbond Microelectronics Corp.
Winbond Systems Lab.
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
http://www.winbond.com.tw/
Voice & Fax-on-demand: 886-2-7197006
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.
- 16 -
相关型号：
©2020 ICPDF网 联系我们和版权申明