W91472CN [WINBOND]
6-MEMORY TONE/PULSE DIALER WITH SAVE AND HANDFREE FUNCTION; 使用保存和免提功能6 -MEMORY音频/脉冲拨号器
| 型号： | W91472CN |
| 厂家： | 
WINBOND |
| 描述： | 6-MEMORY TONE/PULSE DIALER WITH SAVE AND HANDFREE FUNCTION |
| 文件： | 总14页 (文件大小：186K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
W91472N SERIES
6-MEMORY TONE/PULSE DIALER WITH
SAVE AND HANDFREE FUNCTIONS
GENERAL DESCRIPTION
The W91472N series are tone/pulse switchable telephone dialers with five memories, save memory,
and handfree dialing control. These chips are fabricated using Winbond's high-performance CMOS
technology and thus offer good performance in low-voltage and low-power operations.
FEATURES
· DTMF/pulse switchable dialer
· Two by 32 digit redial and save memory
· Five by 16 digit one-touch direct repertory memory
· Pulse-to-tone (*/T) keypad for long distance call operation
· Cascaded dialing
· Uses 5 ´ 6 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) selectable by bonding option
· On-hook debounce time: 150 mS
· Minimum tone output duration: 93 mS
· Minimum intertone pause: 93 mS
· Pause time: 3.6 sec.
· Flash break time (73 mS, 100 mS, 300 mS, or 600 mS) selectable by keypad; pause time is 1.0S
· Make/break ratio (40:60 or 33.3:66.7) selectable by MODE pin
· On-chip power-on reset
· Uses 3.579545 MHz crystal or ceramic resonator
· 18 or 20-pin dual-in-line plastic package
· The different dialers in the W91472N series are shown in the following table:
TYPE NO.
REPLACEMENT
TYPE NO.
PULSE
(ppS)
FLASH
(mS)
M/B
KEY
TONE
HANDFREE
DIALING
PACKAGE
(PINS)
W91472N
W91472
10
10
20
20
600/300/73/100
600/300/73/100
600/300/73/100
600/300/73/100
Pin
Pin
Pin
Pin
-
-
18
20
18
20
W91472AN
W91472BN
W91472CN
W91472A
W91472B
W91472C
Yes
-
Yes
-
Yes
Yes
Publication Release Date: May 1997
Revision A2
- 1 -
W91472N SERIES
PIN CONFIGURATIONS
C1
C2
C3
1
2
R4
R3
20
19
18
C1
1
R4
R3
18
17
16
C2
2
R2
R1
V
3
C4
C5
3
4
5
6
7
8
9
4
17
16
C3
R2
R1
15
14
13
5
DD
C4
C5
15
14
13
12
11
V
SS
MODE
DTMF
DP/C6
6
V
DD
XT
V
7
MODE
DTMF
SS
12
11
10
XT
XT
8
9
HKS
HFO
XT
T/P MUTE
HFI
DP/C6
HKS
10
T/P MUTE
W91472N/472BN
W91472AN/472CN
PIN DESCRIPTION
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
Column-
Row Inputs
I
The keyboard input is compatible with a standard 5 x 6
keyboard, an inexpensive single contact (Form A)
keyboard, and electronic input.
1- 5
&
15- 18
1- 5
&
17- 20
In normal operation, any single button can be pushed to
produce dual tone, pulses, or function. Activation of two
or more buttons will result in no response except for
single tone.
XT
7
7
I
A built-in inverter provides oscillation with an
inexpensive 3.579545 MHz crystal. The oscillator
ceases when a keypad input is not sensed. The crystal
frequency deviation is 0.02%.
8
9
8
9
O
O
Crystal oscillator output pin.
XT
T/P MUTE
The T/P MUTE is a conventional CMOS N-channel
open drain output.
The output transistor is switched on low level during
dialing sequence (both pulse and tone mode).
Otherwise, it is switched off.
- 2 -
W91472N SERIES
Pin Description, continued
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
MODE
13
15
I
Pulling mode pin to VSS places dialer in tone mode.
Pulling mode pin to VDD places dialer in pulse mode
with M/B ratio of 40:60 (10 ppS, except for
91472BN/472CN = 20 ppS).
Leaving mode pin floating places dialer in pulse mode
with M/B ratio of 33.3:66.7 (10 ppS, except for
W91472BN/472CN = 20 ppS).
10
12
I
HKS
The HKS 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.
HKS pin is pulled to VDD by internal resistor.
N-channel open drain dialing pulse output.
11
12
13
14
O
O
DP / C6
DTMF
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, d).
During pulse dialing, this pin remains in low state
regardless of keypad input. In the tone mode, it will
output a dual or single tone.
A detailed timing diagram for tone mode is shown in
Figure 2 (a, b, c, d).
OUTPUT FREQUENCY
Specified
697
Actual
699
Error %
+0.28
R1
R2
R3
R4
C1
C2
C3
770
852
766
848
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
941
948
1209
1336
1477
1216
1332
1472
Power input pins for the dialer chip. VDD is the main
power and VSS is the ground.
VDD, VSS
14, 6
16, 6
I
Publication Release Date: May 1997
- 3 -
Revision A2
W91472N SERIES
Pin Description, continued
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
-
10, 11
I, O Handfree control pins.
HFI,
HFO
A low pulse on the HFI input pin toggles the handfree
control state.
Status of the handfree control state is listed in the
following table:
CURRENT STATE
NEXT STATE
INPUT
HFO
DIALING
HOOK SW.
HFO
-
High
Low
Low
Low
Low
High
Yes
No
Low
High
High
-
HFI
HFI
On Hook
Off Hook
On Hook
Off Hook
Off Hook
Yes
Yes
No
HFI
Off Hook
On Hook
On Hook
Low
High
Yes
HFI pin is pulled to VDD by an internal resistor.
Detailed timing diagram is shown in Figure 3.
BLOCK DIAGRAM
XT
XT
HKS
HFI
SYSTEM CLOCK
GENERATOR
CONTROL
LOGIC
ROW
(R1 to R4, Vx)
READ/WRITE
COUNTER
MODE
KEYBOARD
INTERFACE
COLUMN
(C1 to C5)
T/P MUTE
PULSE
CONTROL
LOGIC
LOCATION
LATCH
RAM
DP/C6
HFO
ROW & COLUMN
PROGRAMMABLE
COUNTER
D/A
DATA LATCH
& DECODER
DTMF
CONVERTER
- 4 -
W91472N SERIES
FUNCTIONAL DESCRIPTION
C1
C2
C3
C4
C5
DP
/
C6
M1
1
4
2
5
3
6
S
M4
M5
R1
R2
R3
R4
Vx
F4
M2
M3
7
8
9
*/T
F1
0
#
R/P
SAVE
F2
F3
· S: Store function key
· R/P: Redial and pause function key
· */T: * in tone mode and P® T key in pulse mode
· SAVE: Save function key for one-touch 32-digit memory
· M1, ..., M5: One-touch memory
· F1, ..., F4: Flash function keys: F1 = 600 mS, F2 = 300 mS, F3 = 73 mS, F4 = 100 mS, and all
flash pause time is 1.0 mS
Note: Mn = M1 , ..., M5; Dn = 0, ..., 9, */T, #, Pause.
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 nomal dialing.
Redialing
OFF HOOK (or ON HOOK
&
), D1
&
,
D2 , ..., Dn Busy, Come
), R/P
¡ õ
HFI
ON HOOK OFF HOOK (or ON HOOK
,
¡ õ
HFI
1. The redial memory content will be D1, D2, ..., Dn.
2. The R/P key can execute the redial function only as first key-in after off-hook. Otherwise, it
will
execute the pause function.
Publication Release Date: May 1997
- 5 -
Revision A2
W91472N SERIES
Number Store
1. OFF HOOK (or ON HOOK
&
), D1
,
D2 , ..., Dn
,
S
¡ õ
HFI
,
S
,
Mn
a. If the sequence of the dialed digits D1, D2, ..., Dn has not
finished,
S
will be ignored.
D2 , ..., Dn
b. D1, D2, ..., Dn will be dialed out and stored in memory location Mn.
2. OFF HOOK (or ON HOOK
Mn
&
),
S
,
D1
,
¡ õ
HFI
,
S
,
a. D1, D2, ..., Dn will be stored in memory location Mn but will not be dialed out.
b. R/P and */T keys can be stored as a digit in memory, but R/P key cannot be the first
digit.
In
store R/P is the pause function key.
mode,
c. The store mode is released after the store function is executed or when the state of the hook switch
changes or the flash function is executed.
Save
1. OFF HOOK (or ON HOOK
a. D1, D2, ..., Dn will be dialed out.
&
), D1
,
D2 , ..., Dn
,
SAVE
¡ õ
HFI
b. If the dialing D1 to Dn is finished, pressing SAVE
of
will cause D1 to Dn to be
duplicated to save memory.
2. ON HOOK
,
OFF HOOK (or
), SAVE
¡ õ
HFI
D1 to Dn will be dialed out after the SAVE key is pressed.
Repertory Dialing
OFF HOOK (or ON HOOK
&
), Mn (or SAVE
)
¡ õ
HFI
The content of memory location Mn (or save) will be dialed out.
Access Pause
OFF HOOK (or ON HOOK
&
), D1
,
D2
,
R/P
,
D3 , ..., Dn
¡ õ
HFI
1. The pause function can be stored as a digit in memory.
2. The pause function is executed in normal dialing or redialing or memory dialing.
3. The pause function timing diagram is shown in Figure 4.
- 6 -
W91472N SERIES
Pulse-to-Tone (*/T)
OFF HOOK (or ON HOOK
&
), D1
,
D2 , ..., Dn
,
*/T
,
¡ õ
HFI
D1'
,
D2' , ..., Dn'
1. If the mode switch is set to pulse mode, then the output signal will be:
D1, D2, ..., Dn, Pause, 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 function timing diagram is shown in Figure 5.
Flash
OFF HOOK (or ON HOOK
1. Fn = F1, ..., F4.
&
), Fn
¡ õ
HFI
2. If Fn is pressed, the dialer will execute flash break time of 600 mS (F1), 300 mS (F2),
73 mS (F3), or 100 mS (F4). The pause time is 1.0 second.
3. Flash key cannot be stored as a digit in memory. The flash key has first priority among 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 6.
Cascaded Dialing
OFF HOOK (or ON HOOK
&
),
Normal dialing
¡ õ
HFI
1. Normal dialing
(1st sequence)
+
Repertory dialing
(2nd sequence)
+
+
2. Repertory dialing
(1st sequence)
+
Normal dialing
Repertory dialing
(2nd sequence)
3.
Redialing
+
Normal dialing
+
Repertory dialing
(1st sequence)
(2nd sequence)
Redialing and save dialing is valid only as the first key-in.
Publication Release Date: May 1997
Revision A2
- 7 -
W91472N SERIES
ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Supply Voltage
SYMBOL
VDD- VSS
VIL
RATING
UNIT
V
-0.3 to +7.0
VSS -0.3
VDD +0.3
VSS -0.3
VDD +0.3
120
Input/Output Voltage
V
VIH
V
VOL
V
VOH
V
Power Dissipation
PD
mW
°C
°C
Operating 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. = 3.58 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
Pulse
-
-
-
0.40
0.20
-
mA
mA
mA
Standby Current
ISB
HKS = 0, No load &
No key entry
Memory Retention
Current
IMR
VTO
-
-
130
1
-
150
2
0.2
170
3
mA
HKS = 1, VDD = 1.0V
Tone Output Voltage
mVrm
s
Row group, RL = 5 KW
Pre-emphasis
Col/Row, VDD = 2.0 to
5.5V
dB
dB
V
DTMF Distortion
THD
VTDC
ITL
-
-30
-
-23
3.0
-
RL = 5 KW, VDD = 2.0 to
5.5V
DTMF Output DC
Level
1.0
0.2
0.5
RL = 5 KW, VDD = 2.0 to
5.5V
DTMF Output Sink
Current
VTO = 0.5V
VPO = 0.5V
-
mA
mA
IPL
-
-
DP Output Sink
Current
- 8 -
W91472N SERIES
DC Characteristics, continued
PARAMETER
SYMBOL
CONDITIONS
VMO = 0.5V
MIN.
TYP. MAX.
UNIT
IML
0.5
-
-
mA
T/P MUTE Output
Sink Current
HFO Drive/Sink
Current
IHFH
IHFL
IKD
VHFH = 2.0V
VHFL = 0.5V
VI = 0V
0.5
0.5
4
-
-
-
-
-
-
mA
Keypad Input Drive
Current
mA
mA
Keypad Input Sink
Current
IKS
-
VI = 2.5V
200
-
400
-
-
Keypad Resistance
-
5.0
KW
AC CHARACTERISTICS
PARAMETER
Key-in Debounce
SYMBOL
CONDITIONS
-
MIN.
TYP.
20
MAX. UNIT
TKID
TKRD
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
mS
mS
mS
mS
mS
mS
mS
mS
mS
%
Key Release Debounce
On-hook Debounce
Pre-digit Pause1
-
20
TOHD
TPDP1
10 ppS
TPDP2
20 ppS
TIDP
-
150
40
Mode Pin = VDD
Mode Pin = Floating
Mode Pin = VDD
Mode Pin = Floating
10 ppS
33.3
20
Pre-digit Pause2
16.7
800
500
40:60
33.3:66.7
93
Interdigit Pause
(Auto dialing)
20 ppS
Make/Break Ratio
M:B
Mode Pin = VDD
Mode Pin = Floating
%
Tone Output Duration
Intertone Pause
TTD
TITP
TFB
mS
mS
mS
93
Flash Break Time
F1
F2
F3
F4
600
300
73
100
1.0
Flash Pause Time
Pause Time
TFP
TP
S
S
3.6
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 A2
- 9 -
W91472N SERIES
TIMING WAVEFORMS
HKS
T
KRD
3
4
2
2
KEY IN
DP
T
KID
T
KID
M B
M B
T
T
IDP
T
IDP
T
IDP
IDP
T
PDP
T
PDP
T/P MUTE
DTMF
Low
OSCILLATION
OSCILLATION
OSC.
Figure 1(a). Normal Dialing Timing Diagram
HKS
KEY IN
DP
T
< TOHD
TKRD
R/P
TKID
M
B
B
M
TIDP
T
IDP
TIDP
TPDP
T/P MUTE
Low
DTMF
OSC.
OSCILLATION
Figure 1(b). Pulse Mode Auto Dialing Timing Diagram
- 10 -
W91472N SERIES
Timing Waveforms, continued
HKS
T > TOHD
TKRD
R/P
TKID
KEY IN
DP
M
B
M
B
TIDP
TPDP
T/P MUTE
Low
DTMF
OSC.
OSCILLATION
Figure 1(c). Pulse Mode Auto Dialing Timing Diagram
HKS
T
KRD
5
3
4
2
KEY IN
T
KID
DTMF
T/P MUTE
DP
T
TD
T
T
T
ITP
ITP
ITP
High
OSCILLATION
OSCILLATION
OSC.
Figure 2(a). Tone Mode Normal Dialing Timing Diagram
Publication Release Date: May 1997
Revision A2
- 11 -
W91472N SERIES
Timing Waveforms, continued
ON HOOK
HKS
HFI
HFO
T/P MUTE
High
CHIP ENBLE
Figure 3. Handfree Timing diagram
HKS
2
R/P
3
KEY IN
DP
TKID
T
IDP
M
M B
B
TPDP
TPDP
TP
Low
T/P MUTE
DTMF
OSCILLATION
OSC.
Figure 4. Pause Function Timing Diagram
- 12 -
W91472N SERIES
Timing Waveforms, continued
HKS
KEY IN
DP
2
*/T
3
TKID
MB
TPDP
T
P
T/P MUTE
T
IDP
T
ITP
DTMF
OSC.
OSCILLATION
Figure 5. Pulse-to-Tone Timing Diagram
Low
HKS
3
F
F
F
KEY IN
DP
TKID
TFP
TKID
TFP
TFB
TKID
HFI
TFB
HFO
T/P MUTE
DTMF
T
ITP
OSC.
OSCILLATION
Figure 6. Flash Timing Diagram
Publication Release Date: May 1997
Revision A2
- 13 -
W91472N 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: 852-27516023
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.
- 14 -
相关型号：
©2020 ICPDF网 联系我们和版权申明