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Электронный компонент: W91320ALN

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W91320N SERIES
TONE/PULSE DIALER WITH HANDFREE
LOCK AND HOLD FUNCTIONS
Publication Release Date: May 1997
- 1 -
Revision A2
GENERAL DESCRIPTION
The W91320N series are Si-gate CMOS ICs that provide the necessary signals for tone or pulse
dialing. The W91320N series provide one-key redial, handfree dialing, hold, redial, and lock
functions.
FEATURES
DTMF/pulse switchable dialer
32-digit redial 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
0 or 9 dialing inhibition pin for PABX system or long distance dialing lock out
Off-hook delay 300 mS in lock mode ( DP will keep low for 300 mS while off hook)
First key-in delay 300 mS output in lock mode
Dialing rate (10, 20 ppS ) selected 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, and the pause time is 1.0 sec.
On-chip power-on reset
Uses 3.579545 MHz crystal or ceramic resonator
Packaged in 18, 20, or 22-pin plastic DIP
The different dialers in the W91320N series are shown in the following table:
TYPE NO.
REPLACEMENT
TYPE NO.
PULSE
(ppS)
FLASH
(mS)
M/B
HANDFREE
DIALING
LOCK
PACKAGE
(PINS)
W91320N
W91320
10
600/100/300/73
Pin
-
-
18
W91321N
W91321
20
600/100/300/73
Pin
-
-
18
W91320AN
W91320A
10
600/100/300/73
Pin
Yes
-
20
W91321AN
W91321A
20
600/100/300/73
Pin
Yes
-
20
W91320LN
W91322L
10
600/100/300/73
Pin
-
Yes
20
W91320ALN
W91322AL
10
600/100/300/73
Pin
Yes
Yes
22
W91320N SERIES
- 2 -
PIN CONFIGURATIONS
C4
1
2
3
4
5
6
7
8
9
10
HKS
DTMF
MODE
R4
R3
R2
R1
V
DD
13
18
20
19
17
16
15
14
12
11
HFO
W91320AN/W91321AN
C1
C2
C3
SS
V
XT
XT
T/P MUTE
HFI
H/P MUTE
DP/C5
W91320ALN
LOCK
C1
C2
C3
C4
SS
V
XT
XT
1
2
3
4
5
6
7
8
9
T/P MUTE
10
HFI
HKS
DTMF
MODE
R4
R3
R2
R1
V
DD
13
18
20
19
17
16
15
14
12
11
HFO
NC
21
22
H/P MUTE
DP/C5
W91320N/W91321N
1
2
3
4
5
6
7
8
9
HKS
DTMF
MODE
R4
R3
R2
R1
V
DD
12
18
17
16
15
14
10
11
13
C1
C2
C3
C4
SS
V
XT
XT
T/P MUTE
H/P MUTE
DP/C5
W91320LN
LOCK
C1
C2
C3
C4
SS
V
XT
XT
1
2
3
4
5
6
7
8
9
T/P MUTE
10
HKS
DTMF
MODE
R4
R3
R2
R1
V
DD
13
18
20
19
17
16
15
14
12
11
H/P MUTE
NC
DP/C5
W91320N SERIES
Publication Release Date: May 1997
- 3 -
Revision A2
PIN DESCRIPTION
SYMBOL
18-PIN
20-PIN
22-PIN
I/O
FUNCTION
Column-
Row
Inputs
1
-
4
&
15
-
18
1
-
4
&
17
-
20
1
-
4
&
19
-
22
I
The keyboard inputs may be used with
either the standard 5
5 keyboard or
the inexpensive single contact (Form A)
keyboard. Electronic input from a
C
can also be used.
A valid key-in is defined as a single row
being connected to a single column
XT, XT
7, 8
7, 8
(8, 9,
W91320LN
only)
8, 9
I, O
A built-in inverter provides oscillation
with an inexpensive 3.579545 MHz
crystal or ceramic resonator.
T/P
MUTE
9
9
(10,
W91320LN
only)
10
O
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
(14,
W91320LN
only)
16
I
Pulling mode pin to V
SS
places the
dialer in tone mode.
Pulling mode pin to V
DD
places the
dialer in pulse mode. (10 ppS; 20 ppS
for W91321N/321AN M/B = 40:60)
Floating mode pin places the dialer in
pulse mode. (10 ppS; 20 ppS for
W91321N/321AN M/B = 33.3:66.7)
HKS
10
12
(11,
W91320LN
only)
13
I
Hook switch input.
HKS = V
DD
: On-hook state. Chip in
sleeping mode, no operation.
HKS = V
SS
: Off-hook state. Chip is
enable for normal operation.
HKS pin is pulled to V
DD
by internal
resistor.
W91320N SERIES
- 4 -
Pin Description, continued
SYMBOL
18-PIN
20-PIN
22-PIN
I/O
FUNCTION
DP / C5
11
13
(12,
W91320LN
only)
14
O
N-channel open drain dialing pulse
output.
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).
V
DD
, V
SS
14, 6
16, 6
(16, 7
W91320LN
only)
18, 7
I
Power input pins.
H/P
MUTE
5
5
(6,
W91320LN
only)
6
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.
NC
-
15
(W91320LN
only)
17
-
No connection.
DTMF
12
14
(13,
W91320LN
only)
15
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, d).
Specified
Actual
Error %
Output Frequency
R1
R2
R3
R4
C1
C2
C3
697
770
852
941
1209
1336
1477
699
766
848
948
1216
1332
1472
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
W91320N SERIES
Publication Release Date: May 1997
- 5 -
Revision A2
Pin Description, continued
SYMBOL
18-PIN
20-PIN
22-PIN
I/O
FUNCTION
HFI,
HFO
-
10, 11
(W91320AN/
321AN)
11, 12
I, O
Handfree control pins. The handfree
control state is 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
Input
HFO
Dialing
High
Yes
On Hook
High
Low
No
Off Hook
High
Low
Yes
On Hook
Off Hook
Low
Yes
Off Hook
Low
On Hook
Low
No
Off Hook
High
On Hook
High
Yes
Low
Hook SW.
HFO
NEXT STATE
HFI
HFI
HFI
HFI pin is pulled to V
DD
by internal
resistor.
Detailed timing diagrams are shown in
Figure 3(a, b, c).
LOCK
-
5
(6,
W91320LN
only)
5
I
The function of this terminal is to
prevent "0" dialing and "9" dialing under
PABX system long distance call control.
When the first key input after reset is 0
or 9, all key inputs, including the 0 or 9
key, become invalid and the chip
generates no output. The telephone is
reinitialized by a reset.
LOCK PIN
FUNCTION
Floating
Normal dialing mode
V
DD
V
SS
"0," "9" dialing inhibited
"0" dialing inhibited
W91320N SERIES
- 6 -
BLOCK DIAGRAM
ROW
COLUMN
DTMF
XT
XT
MODE
RAM
COUNTER
SYSTEM CLOCK
GENERATOR
LOCATION
LATCH
D/A
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
READ/ WRITE
(R1 to R4, Vx)
(C1 to C4)
T/P MUTE
HFO
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
KEYBOARD
INTERFACE
CONVERTER
LOCK
HKS
HFI
DP/C5
H/P MUTE
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
C2
C3
C4
DP
/
C5
1
2
3
R1
4
5
6
F1
R2
7
8
9
F2
H
R3
/T
0
#
R/P1
R
R4
R/P2
R
F3
F4
V
X
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, the flash break time of F1 = 600 mS, F2 = 100 mS, F3 = 300 mS, F4 = 73
mS
H: Hold 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
W91320N SERIES
Publication Release Date: May 1997
- 7 -
Revision A2
Normal Dialing
OFF HOOK
(or
ON HOOK
&
HFI
),
D1
,
D2
, ...,
Dn
1. D1, D2,
...
, Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits in normal dialing.
Redialing
1.
OFF HOOK
(or
ON HOOK
&
HFI
),
D1
,
D2
, ...,
Dn
, Busy,
Come
ON HOOK
,
OFF HOOK
(or
ON HOOK
&
HFI
),
R/P
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 oversteps 32 digits, the redialing function will be inhibited.
2.
OFF HOOK
(or
ON HOOK
&
HFI
),
D1
,
D2
, ...,
Dn
, Busy,
R
a. The one-key redialing function timing diagram is shown in Figure 4.
b. If the dialing of
D1
to
Dn
is finished, pressing the
R
key will cause the pulse output pin 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,
and it is actived during normal dialing or repertory dialing.
Access Pause
OFF HOOK
(or
ON HOOK
&
HFI
),
D1
,
D2
,
R/P
,
D3
, ...,
Dn
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. The detailed timing diagram for the pause function is shown in Figure 5.
Pulse-to-tone (*/T)
OFF HOOK
(or
ON HOOK
&
HFI
),
D1
,
D2
, ...,
Dn
,
*/T
,
D1'
,
D2'
, ...,
Dn'
W91320N SERIES
- 8 -
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.
Flash
OFF HOOK
(or
ON HOOK
&
HFI
),
Fn
1. Fn = F1, ..., F4
2. The dialer will execute flash break time of 600 mS (F1), 100 mS (F2), 300 mS (F3), or 73 mS (F4)
and all the pause time is 1.0 sec. before the next digit is dialed out.
3. Flash key can not be stored as a digit in memory. The flash key has the 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
&
HFI
),
H
The hold function is switched on and off by a toggle switch. The keypad will be disabled when in hold
mode. The function timing diagram is shown in Figure 3(a, b, c).
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATING
UNIT
DC Supply Voltage
V
DD
-
V
SS
-0.3 to +7.0
V
Input/Output Voltage
V
IL
V
SS
-
0.3
V
V
IH
V
DD
+0.3
V
V
OL
V
SS
-
0.3
V
V
OH
V
DD
+ 0.3
V
Power Dissipation
P
D
120
mW
Operation Temperature
T
OPR
-20 to +70
C
Storage Temperature
T
STG
-55 to +150
C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.
W91320N SERIES
Publication Release Date: May 1997
- 9 -
Revision A2
DC CHARACTERISTICS
(V
DD
-V
SS
= 2.5V, F
OSC.
= 3.579545 MHz, T
A
= 25
C, All outputs unloaded)
PARAMETER
SYM.
CONDITIONS
MIN. TYP.
MAX.
UNIT
Operating Voltage
V
DD
-
2.0
-
5.5
V
Operating Current
I
OP
Tone, Unloaded
-
0.4
0.6
mA
Pulse, Unloaded
-
0.2
0.4
Standby Current
I
SB
HKS = V
SS
, No
load & No key
entry
-
-
15
A
Memory Retention Current
I
MR
HKS = V
DD
,
V
DD
= 1.0V
-
-
0.2
A
DTMF Output Voltage
V
TO
Row group,
R
L
= 5 K
130
150
170
mVrm
s
Pre-emphasis
Col/Row,
V
DD
= 2.0 to 5.5V
1
2
3
dB
DTMF Distortion
THD
R
L
= 5 K
,
V
DD
= 2.0 to 5.5V
-
-30
-23
dB
DTMF Output DC Level
V
TDC
R
L
= 5 K
,
V
DD
= 2.0 to 5.5V
1.0
-
3.0
V
DTMF Output Sink Current
I
TL
V
TO
= 0.5V
0.2
-
-
mA
DP Output Sink Current
I
PL
V
PO
= 0.5V
0.5
-
-
mA
T/P MUTE Output Sink
Current
I
TML
V
TMO
= 0.5V
0.5
-
-
mA
H/P MUTE Output
I
HPH
V
HPL
= 2.0V
0.5
-
-
mA
Drive/Sink Current
I
HPL
V
HPL
= 0.5V
0.5
-
-
mA
HFO Drive/Sink Current
I
HFH
V
HFH
= 2.0V
0.5
-
-
mA
I
HFL
V
HFL
= 0.5V
0.5
-
-
mA
Keypad Input Drive Current
I
KD
V
I
= 0.0V
30
-
-
A
Keypad Input Sink Current
I
KS
V
I
= 2.5V
200
400
-
A
HKS I/P Pull-High Resistor
R
HK
-
-
300
-
K
Keypad Resistance
R
K
-
-
-
5
K
W91320N SERIES
- 10 -
AC CHARACTERISTICS
(V
DD
-
V
SS
= 2.5V, F
OSC.
= 3.579545 MHz, T
A
= 25
C, All outputs unloaded)
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Key-in Debounce
T
KID
-
-
20
-
mS
Key Release Debounce
T
KRD
-
-
20
-
mS
Off-hook Delay
T
OFD
Lock only
-
300
-
mS
First Key-in Delay
T
FKD
Lock only
-
300
-
mS
Pre-digit-pause
1
T
PDP1
Mode = V
DD
-
40
-
mS
10 ppS
Mode = Floating
-
33.3
-
Pre-digit-pause
2
T
PDP2
Mode = V
DD
-
20
-
mS
20 ppS
Mode = Floating
-
16.7
-
Interdigit Pause
T
IDP
10 ppS
-
800
-
mS
(Auto Dialing)
20 ppS
-
500
-
Make/Break Ratio
M:B
Mode = V
DD
-
40:60
-
%
Mode = Floating
-
33.3:66.7
-
Tone Output Duration
T
TD
Auto dialing
-
93
-
mS
Intertone Pause
T
ITP
Auto dialing
-
93
-
mS
T
FB
F1
-
600
-
Flash Break Time
F2
-
100
-
mS
F3
300
F4
-
73
-
Flash Pause Time
T
FP
F1, F2, F3, F4
-
1.0
-
S
Pause Time
T
P
R/P1
-
3.6
-
S
R/P2
-
2.0
-
One-key Redial Break
Time
T
RB
-
-
2.2
-
S
One-key Redial Pause
Time
T
RP
-
-
600
-
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,
F
OSC
. = 3.579545 MHz
0.02%.
2. Crystal oscillator accuracy directly affects these times.
W91320N SERIES
Publication Release Date: May 1997
- 11 -
Revision A2
TIMING WAVEFORMS
T
IDP
HKS
KEY IN
DP
H/P MUTE
T/P MUTE
2
B
M
T
IDP
T
IDP
T
KID
T
IDP
T
PDP
2
M B
4
T
KRD
3
< 600 mS
< 300 mS
T
KID
DTMF
OSC.
Low
OSCILLATION
OSCILLATION
T
PDP
Figure 1a. Normal Dialing Timing Diagram (Pulse Mode Without Lock Function)
HKS
KEY IN
DP
H/P MUTE
T/P MUTE
T
OFD
2
B
M
T
IDP
T
IDP
T
PDP
T
KID
T
IDP
T
PDP
2
M B
4
T
KID
T
KRD
DTMF
OSC.
Low
OSCILLATION
OSCILLATION
T
FKD
3
< 600 mS
< 300 mS
Figure 1b. Normal Dialing Timing Diagram (Pulse Mode with Lock Function)
W91320N SERIES
- 12 -
Timing Waveforms, continued
HKS
KEY IN
DP
H/P MUTE
T/P MUTE
R/P
T
KID
B
M
T
IDP
T
IDP
T
PDP
M B
DTMF
OSC.
Low
OSCILLATION
T
IDP
< 600 mS
T
KRD
Figure 1c. Auto Dialing Timing Diagram (Pulse Mode Without Lock Function)
HKS
KEY IN
DP
H/P MUTE
T/P MUTE
T
OFD
B
M
T
IDP
T
IDP
T
PDP
M B
DTMF
OSC.
Low
OSCILLATION
R/P
T
KID
T
IDP
T
FKD
< 600 mS
300 mS
Figure 1d. Auto Dialing Timing Diagram (Pulse Mode with Lock Function)
W91320N SERIES
Publication Release Date: May 1997
- 13 -
Revision A2
Timing Waveforms, continued
HKS
KEY IN
H/P MUTE
T/P MUTE
DTMF
5
T
KID
2
Low
4
T
KRD
3
< 600 mS
< 300 mS
T
TD
OSC.
DP
OSCILLATION
OSCILLATION
2
T
ITP
T
ITP
T
ITP
T
KID
High
T
ITP
OSCILLATION
T
KRD
Figure 2a. Normal Dialing Timing Diagram (Tone Mode Without Lock Function)
HKS
KEY IN
H/P MUTE
T/P MUTE
DTMF
5
T
KID
2
Low
4
T
KRD
3
< 600 mS
< 300 mS
T
TD
OSC.
T
OFD
DP
OSCILLATION
OSCILLATION
T
FKD
2
T
ITP
T
ITP
T
ITP
Figure 2b. Normal Dialing Timing Diagram (Tone Mode with Lock Function)
W91320N SERIES
- 14 -
Timing Waveforms, continued
HKS
KEY IN
H/P MUTE
T/P MUTE
DTMF
Low
R/P
T
KRD
< 600 mS
OSC.
DP
OSCILLATION
T
TD
T
ITP
T
ITP
T
KID
Figure 2c. Auto Dialing Timing Diagram (Tone Mode Without Lock Function)
HKS
KEY IN
H/P MUTE
T/P MUTE
DTMF
Low
R/P
T
KRD
< 600 mS
300 mS
T
TD
OSC.
T
OFD
DP
OSCILLATION
T
FKD
T
ITP
T
ITP
Figure 2d. Auto Dialing Timing Diagram (Tone Mode with Lock Function)
W91320N SERIES
Publication Release Date: May 1997
- 15 -
Revision A2
Timing Waveforms, continued
HKS
OFF HOOK
ON HOOK
HFO
H/P MUTE
CHIP ENBLE
Low
High
HFI
H KEY
T/P MUTE
Figure 3a. Handfree and Hold Timing Diagram
Note: The H KEY cannot be enabled when chip is disabled.
T/P MUTE
HFI
HKS
OFF HOOK
HFO
High
H/P MUTE
CHIP ENBLE
H KEY
Figure 3b. Handfree and Hold Timing Diagram
Note: The HFI and H KEY inputs will toggle the HFO signal; as soon as either HFI or H KEY is activated, the HFO signal will go
high and previous activate inputs will be ignored.
W91320N SERIES
- 16 -
Timing Waveforms, continued
T/P MUTE
H KEY
HFI
HKS
ON HOOK
HFO
High
H/P MUTE
CHIP ENBLE
Figure 3c. Handfree and Hold Timing Diagram
Note: Changing the state of the HKS signal from high to low will initialize the HFO and H/P MUTE signals.
HKS
KEY IN
DP
T/P MUTE
DTMF
OSC.
T
OFD
M
T
PDP
Low
OSCILLATION
R
B
T
FKD
< 600 mS
300 mS
R
KID
T
B
M
T
PDP
T
IDP
T
RB
T
RP
T
IDP
HFI
HFO
KID
T
H/P MUTE
Figure 4. One-key Redial Timing Diagram (Pulse Mode)
W91320N SERIES
Publication Release Date: May 1997
- 17 -
Revision A2
Timing Waveforms, continued
HKS
KEY IN
DP
H/P MUTE
T/P MUTE
DTMF
OSC.
Low
OSCILLATION
< 600 mS
2
T
KID
R/P
T
OFD
300 mS
3
B
M
T
PDP
M
T
IDP
B
T
PDP
T
FKD
T
P
OSCILLATION
Figure 5. Pause Function Timing Diagram
HKS
KEY IN
DP
H/P MUTE
T/P MUTE
DTMF
OSC.
OSCILLATION
< 600 mS
2
T
KID
*/T
T
OFD
300 mS
3
B
M
T
PDP
T
IDP
T
P
OSCILLATION
Figure 6. Pulse-to-tone Timing Diagram
W91320N SERIES
- 18 -
Timing Waveforms, continued
H/P MUTE
T/P MUTE
F
F
HKS
T
KID
DTMF
OSC.
DP
KEY IN
Low
3
T
FB
F
T
KID
T
KID
T
ITP
OSCILLATION
HFI
HFO
T
FB
T
FP
Figure 7. Flash Timing Diagram
W91320N SERIES
Publication Release Date: May 1997
- 19 -
Revision A2
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
Taipei Office
11F, No. 115, Sec. 3, Min-Sheng East Rd.,
Taipei, Taiwan
TEL: 886-2-7190505
FAX: 886-2-7197502
Winbond Electronics (H.K.) Ltd.
Rm. 803, World Trade Square, Tower II,
123 Hoi Bun Rd., Kwun Tong,
Kowloon, Hong Kong
TEL: 852-27516023
FAX: 852-27552064
Winbond Electronics North America Corp.
Winbond Memory Lab.
Winbond Microelectronics Corp.
Winbond Systems Lab.
2730 Orchard Parkway, San Jose,
CA 95134, U.S.A.
TEL: 1-408-9436666
FAX: 1-408-9436668
Note: All data and specifications are subject to change without notice.