W91621 [WINBOND]
10-MEMORY TONE/PULSE DIALER WITH TWO-STAGE REDIAL FUNCTION; 采用两段式重拨功能10 -MEMORY音频/脉冲拨号器
| 型号： | W91621 |
| 厂家： | 
WINBOND |
| 描述： | 10-MEMORY TONE/PULSE DIALER WITH TWO-STAGE REDIAL FUNCTION |
| 文件： | 总16页 (文件大小：185K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
W91620 SERIES
10-MEMORY TONE/PULSE DIALER WITH
TWO-STAGE REDIAL FUNCTION
GENERAL DESCRIPTION
The W91620 series are Si-gate CMOS ICs that provide the signals needed for either pulse or tone
dialing. The W91620 series features a ten-channel, 32-digit automatic dialing memory.
FEATURES
· DTMF/Pulse switchable dialer
· 32-digit redial memory
· Two-stage redial function
· Ten by 32 digit two-touch indirect repertory memory
· Mixed dialing, cascade dialing allowed
· Pulse-to-tone (P® T) keypad for long distance call operation
· Easy operation with redial, flash, pause and P® T keypads
· Pause, pulse-to-tone (P® T) can be stored as a digit in memory
· Tone output duration: as long as key is depressed or 90 mS minimum
· Minimum intertone pause: 90 mS
· Flash time: 100 mS
· Uses 4 ´ 5 keyboard
· On-chip power-on reset
· Uses 3.579545 MHz crystal or ceramic resonator
· Packaged in 18-pin DIP
· The different dialers in the W91620 series are shown in the following table
TYPE NO.
W91620
W91621
DIALING RATE
PAUSE
B:M
2:1
FLASH
10 ppS
4 sec
100 mS
3:2
Publication Release Date: December 1994
Revision A3
- 1 -
W91620 SERIES
PIN CONFIGURATION
C1
C2
C3
C4
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
R4
R3
R2
R1
DD
P MUTE
VSS
V
MODE
DTMF
DP/C5
HKS
XT
XT
T/P MUTE
PIN DESCRIPTION
SYMBOL
PIN NO. I/O
FUNCTION
Column-
Row Inputs
I
1- 4
&
Keyboard inputs are designed for use with either a standard 4 ´ 5
keyboard or an inexpensive single contact (Form A) keyboard.
Electronic input from a mC can also be used.
15- 18
Valid key entry is defined by a connection between a single row and
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
O
T/P MUTE
The T/P MUTE is a conventional CMOS inverter output. It is low
during pulse and tone mode dialing sequence and flash break;
otherwise, it remains high.
MODE
13
I
Mode pin.
Pull to VSS: Tone mode
Pull to VDD or leave floating: Pulse mode (10 ppS, M/B = 2:3 or 1:2)
- 2 -
W91620 SERIES
Pin Description, Continued
SYMBOL
PIN NO. I/O
FUNCTION
10
I
Hook switch input. Conventional CMOS input with an internal
protection diode and a pull-high resistor to VDD.
HKS
HKS = 1: On-hook state. Chip in sleep mode, no operation.
HKS = 0: Off-hook state. Chip enabled for normal operation.
During dialing, this input ignores HKS = 1 for durations of less than
150 mS (i.e., dialing is not terminated).
11
12
O
O
Open drain dialing pulse output (Figure 1).
DP/C5
DTMF
Flash key causes DP/C5 to be active in both tone mode and pulse
mode.
During pulse dialing, maintains low state at all times.
In tone mode, outputs a dual or single tone.
Detailed timing diagram for tone mode is shown in Figure 2(a, b).
OUTPUT FREQUENCY
Specified
697
Actual
699
Error %
+0.28
-0.52
R1
R2
R3
R4
C1
C2
C3
770
766
852
941
848
-0.47
948
+0.74
+0.57
1216
1209
1336
1477
-0.30
-0.34
1332
1472
VDD, VSS
P MUTE
14, 6
5
I
Power input pins.
O
The P MUTE is a conventional CMOS inverter output. It is high
during pulse dialing sequence and flash break. Otherwise, it
remains low.
Publication Release Date: December 1994
- 3 -
Revision A3
W91620 SERIES
BLOCK DIAGRAM
XT
XT
HKS
SYSTEM CLOCK
GENERATION
MODE
READ/WRITE
COUNTER
CONTROL
LOGIC
T/P MUTE
ROW
PULSE
CONTROL
LOGIC
(R1 to R4)
KEYBOARD
INTERFACE
P MUTE
DP/C5
RAM
COLUMN
(C1 to C4)
LOCATION
LATCH
ROW & COLUMN
PROGRAMMABLE
COUNTER
D/A
CONVERTER
DATA LATCH
& DECODER
DTMF
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
1
C2
2
C3
3
C4
S
DP / C5
R1
R2
R3
R4
P® T
4
5
6
F
P
7
8
9
A
*
0
#
R
· S: Store function key
· F: Flash key
· P® T: In pulse mode, this key works as Pulse® Tone key
· R: Redial function key
· A: Indirect repertory dialing key
· P: Pause key
- 4 -
W91620 SERIES
Normal Dialing
OFF HOOK
1. D1, D2, ..., 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.
3. Dialing mode is determined at the on/off hook transition.
Redialing
1. OFF HOOK
,
D1
,
D2 , ..., Dn
,
Busy, ON HOOK
,
OFF HOOK
Come
,
R
The R key
executes
the
redialing
function.
2. Redial content = D1, D2, ..., Dn
OFF HOOK R , D1'
a. D1, D2, ..., Dn, D1', D2', P® T, D3', D4' will be dialed out.
b. Redial register is changed to D1, D2, ..., Dn, D1', D2', P® T, D3', D4'.
c. OFF HOOK R (1st)
,
,
D2'
,
,
D3'
,
D4'
P® T
,
D1, D2, ..., Dn, D1', D2', will be dialed
out,
R (2 nd)
P® T, D3', D4' will be dialed out.
3. Ln content = D1, D2, P® T, D3, D4
OFF HOOK
,
A
,
Ln
, will dial out D1, D2, P® T, D3,
D4
then ON HOOK
,
OFF HOOK
,
R will dial out D1,
D2.
4. OFF HOOK
,
A
,
Lm
,
,
A
,
Ln
,
A
,
Lp
Busy, then ON HOOK
OFF HOOK
,
R
a. The digits stored in Lm, Ln, and Lp will be dialed out after
the
R key is pressed.
b. If length oversteps 32 digits, redial is inhibited.
c. Redial register stores not only normal dialing digits but also repertory or mixed dialed numbers.
Publication Release Date: December 1994
- 5 -
Revision A3
W91620 SERIES
Number Store
1. OFF HOOK
,
S
,
D1
,
D2 , ..., Dn
,
A
,
Ln
,
ON HOOK
a. D1, D2, ..., Dn will be stored in memory location Ln but will not be dialed out.
b. Ln = 0 to 9; Dn = 0 to 9, * , # , Pause, P® T.
c. The store mode is released to the initial state only when all store operations are finished. There
is no need to
perform
ON HOOK
,
OFF HOOK to begin a second store
operation.
For
example
S
,
D1
,
D2
,
D3
,
D4
A
,
A
,
Ln
,
then
then
S
S
,
,
D1'
...,
,
D2'
is
,
D3'
,
D4'
,
,
Lp
,
still
available.
But the following sequence is not valid:
S
,
D1
,
D2
,
D3
Ln
,
D4
,
A
,
Ln
,
then
S
,
R ,
A
,
2. OFF HOOK
,
S
,
R ,
A
,
Ln
,
ON HOOK
a. Redial content is transferred to memory Ln.
b. When the last number was dialed from redial memory, the content of the redial memory cannot
be transferred to a memory location. For example, if the redial content is 1 2 3 4 5 + A 3, it
cannot be transferred to a memory location, and the content of Ln will not be modified.
Memory Clear
OFF HOOK
,
S
,
A
,
Ln
,
S
,
A
,
Lp , ...
The Ln, Lp, etc., memories will be cleared.
Repertory Dialing
OFF HOOK
,
A
,
Ln
1. The digits stored in Ln will be dialed out.
2. The type of output signal is determined by the mode switch.
3. The redial register content is the content of location number Ln.
¡ ÷
4. If the content of Ln is 1, 2, 3, P® T, 4, 5, 6, the redial function will execute the P T function and
the system will change to tone mode.
Access Pause
OFF HOOK
,
D1
,
D2
,
P
,
D3 , ..., Dn
- 6 -
W91620 SERIES
1. The pause function can be stored in memory.
2. The pause function may be executed in normal dialing, redialing, or memory dialing (4.0
sec/pause).
3. The pause function can be stored as the first digit in memory.
4. The pause time depends on the number of times the P key is depressed. For example, if the
sequence 1, 2, P, P, 4, 5, 6 is keyed in, then the pause time is 8 seconds.
5. The pause function timing diagram is shown in Figure 3.
Publication Release Date: December 1994
- 7 -
Revision A3
W91620 SERIES
Pulse-to-tone (P® T)
1. OFF HOOK D1
,
,
D2 , ..., Dn
,
,
D1'
,
D2' , ..., Dn'
P® T
a. If the mode switch is set to pulse mode, then the output signal will be as follows:
D1, D2, ..., Dn, no pause, D1', D2', ..., Dn'
(Pulse)
(Tone)
In this case, the device can be reset to pulse mode only by going on-hook, because tone mode
remains enabled after the digits have been dialed out.
b. If the mode switch is set to tone mode, then the output signal will be as follows:
D1, D2, ..., Dn, no pause, D1', D2', ..., Dn'
(Tone)
(Tone)
c. The P® T key may be pressed before the first sequence is dialed out completely.
2. OFF HOOK
,
R
a. If the mode switch is set to pulse mode, then the output signal will be as follows:
D1, D2, ..., Dn
(Pulse)
b. In the first redial operation, only the digits before the tone key are dialed out.
R (2nd)
D1', D2', ..., Dn' are dialed out.
(Tone)
c. In the second redial operation, the digits after the tone key are dialed out.
3. OFF HOOK
,
A
,
Ln
a. The P® T key can be stored in memory as a digit. The digits after the P® T key are also sent in
repertory dialing.
b. The P® T key does not stop dialing (no pause).
c. The number stored in memory location Ln will be transferred to the redial register, but the P® T
function will not be executed during redialing if the P® T key has been stored in location Ln.
d. The P® T function timing diagram is shown in Figure 4.
- 8 -
W91620 SERIES
Flash
OFF HOOK
,
D1
,
D2
,
D3
,
F
,
D4
,
D5
,
D6
1. The
F
key may be pressed before digits D1, D2, D3 are sent completely. Digits D4, D5, D6
may be pressed during the 100 mS. flash period.
2. The flash key cannot be stored as a digit in memory or in the redial register.
3. The content of the redial register is D1, D2, D3, D4, D5, D6.
The
F
key is not stored in the
redial register.
4. OFF HOOK
,
S
,
D1
,
,
D2
,
D3
,
,
F
,
D4
,
D5
,
D6
,
A
,
Ln then ON HOOK
OFF HOOK
A
,
Ln
D1, D2, D3, D4, D5, D6 will be dialed out.
5. The flash does not have first priority among the keyboard functions.
6. The flash pause time is 800 mS, so there is a pause of 800 mS between the flash and the next digit
dialed (see Figure 5).
7. The dialer will not return to the initial state after the flash break time has elapsed.
8. The flash function timing diagram is shown in Figure 5.
Cascaded & Mixed Dialing
Cascaded Dialing
1. Definition of cascaded dialing:
The next sequence may be pressed before the previous sequence is sent out completely.
Examples of cascaded dialing.
¡ Ï
¡ Ï
¡ Ï
...
Example
1:
Normal dialing
Repertory dialing 1
Repertory dialing 2
¡ Ï
...
¡ Ï
¡ Ï
Example
2:
Repertory dialing
Normal dialing
Repertory dialing 2
¡ Ï
¡ Ï
¡ Ï
...
Example
3:
Redialing
Normal dialing
Repertory dialing 1
2. The rectangles above represent one sequence of normal dialing, redialing, or repertory dialing.
3. At most 64 digits are allowed in cascaded dialing. There is no limitation on the number of
sequences.
4. The content of cascaded dialing may include a combination of normal dialing, redialing, and
repertory dialing. Redialing is valid only as the first key-in, however.
5. ON HOOK
,
OFF HOOK
,
R : The cascaded dialing sequences described in the above
Publication Release Date: December 1994
- 9 -
Revision A3
W91620 SERIES
above examples will be dialed out only if they do not exceed a total of 32 digits. If the length of the
combined sequences oversteps 32 digits then redialing is inhibited.
Mixed Dialing
1. Definition of mixed dialing:
Mixed dialing is a combination of sequences of normal dialing, repertory dialing, and redialing. The
three examples given for cascaded dialing are also examples of mixed dialing, provided each
sequence is dialed out completely before the next sequence is entered.
2. There is no limitation on the number of digits and sequences in mixed dialing.
3. If a mixed dialing sequence includes redialing, the redialing is valid only as the first key-in.
4. ON HOOK
,
OFF HOOK
,
R : The mixed dialing sequences described in the above
examples will be dialed out only if the total number of digits does not exceed 32. If the total
oversteps 32 digits, then redialing is inhibited.
Combination of Cascaded and Mixed Dialing
1. Cascaded dialing and mixed dialing can be combined; each follows the rules described above.
2. To apply redialing to combinations of cascaded and mixed dialing:
ON HOOK
,
OFF HOOK
,
R : Redialing will be executed only if the total number of
digits
does not exceed 32. If the total oversteps 32 digits, then redialing is inhibited.
3. If n cascaded sequences with a total of 60 digits have been dialed, then for the (n+1)th cascaded
sequence, either one 4-digit normal dialing sequence or one complete repertory dialing sequence
(length up to 30 digits) may be dialed. The (n+2)th sequence is not accepted for cascaded dialing.
4. After a total of 64 digits of cascaded dialing, mixed dialing can be added.
ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Supply Voltage
SYMBOL
VDD- VSS
VIL
RATING
-0.3 to +7.0
VSS -0.3
UNIT
V
V
Input/Output Voltage
VIH
VDD +0.3
VSS -0.3
V
VOL
V
VOH
VDD +0.3
120
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.
- 10 -
W91620 SERIES
DC CHARACTERISTICS
(FOSC. = 3.58 MHz, TA = 25° C, all outputs unloaded)
PARAMETER
Operating Voltage
Operating Current
SYM.
VDD
IOP
CONDITIONS
-
MIN.
TYP.
-
MAX.
5.5
UNIT
V
2.0
Tone, VDD = 2.5V
Pulse, VDD = 2.5V
-
-
-
0.30
0.15
-
0.50
0.30
15
mA
Standby Current
ISB
mA
mA
HKS = 0, No load & No
key entry
Memory Retention
Current
IMR
-
-
0.2
HKS = 1, VDD = 1.0V
DTMF Output Voltage
Pre-emphasis
VTO
130
1
150
2
170
3
mVrms
dB
Row group, RL = 5 KW
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
0.5
-
-
-
RL = 5 KW
VDD = 2.0 to 5.5V
DTMF Output Sink
Current
VTO = 0.5V
VDD = 2.5V
mA
mA
IPL
VPO = 0.5V
VDD = 2.5V
-
DP/C5 Output Sink
Current
IMH
IML
VMO = 2.0V
VDD = 2.5V
0.2
0.5
-
-
-
-
mA
mA
P MUTE & T/P MUTE
Output Drive Current
VMO = 0.5V, VDD =
2.5V
P MUTE & T/P MUTE
Output Sink Current
Keypad Input Drive
Current
IKD
IKS
VI = 0V, VDD = 2.5V
4
-
-
-
mA
mA
Keypad Input Sink
Current
VI = 2.5V, VDD = 2.5V
200
400
Keypad Resistance
-
-
-
-
-
5.0
-
KW
KW
300
HKS I/P Pull High
Resistance
Input Voltage Low Level
VIL
Pins 1, 2, 3, 4, 10, 13,
15, 16, 17, 18
0
-
-
0.2
VDD
V
V
Input Voltage High Level
VIH
0.8
VDD
VDD
Publication Release Date: December 1994
Revision A3
- 11 -
W91620 SERIES
AC CHARACTERISTICS
PARAMETER
Keypad Active in Debounce
Key Release Debounce
Pre-digit Pause
SYMBOL
TKID
CONDITIONS
MIN.
TYP.
20
MAX. UNIT
-
-
-
-
-
-
-
-
mS
mS
mS
TKRD
20
TPDP1
Mode Pin =
Floating
33.3
10 ppS
TIDP
Mode Pin = 1
10 ppS
-
-
-
-
-
-
-
-
-
-
40
800
33:67
40:60
90
-
-
-
-
-
-
-
-
-
-
Interdigit Pause (Auto Dialing)
Make/Break Ratio
mS
%
M/B
M/B = 1:2
M/B = 2:3
Auto Dialing
DTMF Output Duration
Intertone Pause
Flash Break Time
Flash Pause
TTD
TITP
TFB
TFP
TP
mS
mS
mS
mS
S
90
-
-
-
-
100
800
4.0
Pause Time
Pre-tone Mute
TPTM
70
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: December 1994
Revision A3
- 12 -
W91620 SERIES
TIMING WAVEFORMS
HKS
3
2
R
KEY IN
TKID
TPDP
KID
T
PDP
T
IDP
T
DP/C5
T
IDP
T
IDP
T
IDP
B
T
PDP
T
TPDP
M
T
T/P MUTE
P MUTE
DTMF
LOW
OSCILLATION
AUTO DIALING
OSCILLATION
NORMAL DIALING
OSC.
Figure 1. Pulse Mode Timing Diagram
HKS
KEY IN
TKRD
TKRD
TKRD
TKID
KID
T
PTM
T
PTM
T
TITP
DTMF
TTD
TITP
TITP
T/P MUTE
HIGH
DP/C5
LOW
P MUTE
OSCILLATION
OSCILLATION
OSC.
Figure 2(a). Tone Mode Normal Dialing Timing Diagram
- 13 -
W91620 SERIES
Timing Waveforms, continued
HKS
R
KEY IN
KID
T
PTM
T
DTMF
ITP
T
ITP
T
TTD
T/P MUTE
HIGH
DP/C5
LOW
P MUTE
OSCILLATION
OSC.
Figure 2(b). Tone Mode Auto Dialing Timing Diagram
HKS
2
4
2
P
KEY IN
TKID
M
M
B
B
IDP
T
TIDP
TIDP
DP/C5
TPDP
TPDP
TP
T/P MUTE
DTMF
LOW
P MUTE
OSC.
OSCILLATION
Figure 3. Pause Function Timing Diagram
Publication Release Date: December 1994
- 14 -
Revision A3
W91620 SERIES
Timing Waveforms, continued
HKS
P
T
2
4
8
KEY IN
T
KID
B
M
M B
DP/C5
TIDP
IDP
T
TPDP
T/P MUTE
T
ITP
DTMF
P MUTE
OSC.
OSCILLATION
Figure 4. P® T Operation Timing Diagram in Normal Dialing
LOW
HKS
3
F
F
KEY IN
KID
T
FB
T
T
IDP
DP/C5
TFP
TFP
T/P MUTE
P MUTE
DTMF
LOW
OSCILLATION
OSC.
Figure 5. Flash Operation Timing Diagram
W91620 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.
- 16 -
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