W91430N SERIES
13-MEMORY TONE/PULSE DIALER
WITH SAVE FUNCTION
Publication Release Date: May 1997
- 1 -
Revision A3
GENERAL DESCRIPTION
The W91430N series are Si-gate CMOS ICs that provide the necessary signals for either tone or
pulse dialing. The W91430N series features save memory and a 13 by 16 digit automatic dialing
memory.
FEATURES
DTMF/pulse switchable dialer
Two by 32 digit redial and save memory
Three by 16 digit one-touch direct memory
Ten by 16 digit two-touch direct memory
Redial memory cascadable with normal dialing; dialing length is unlimited, but if length oversteps
32-digit 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; 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 W91430N series are shown in the following table:
TYPE NO.
REPLACEMENT
TYPE NO.
PULSE
(ppS)
FLASH
(mS)
PAUSE
(S)
M/B
W91432N
W91432
10
600/300/73/100
3.6
Pin
W91444
W91446
W91447
W91445
W91434G
W91435G
W91433N
W91433
20
600/300/73/100
3.6
Pin
W91430N SERIES
- 2 -
PIN CONFIGURATION
C1
C2
C3
C4
SS
V
XT
XT
1
2
3
4
5
6
7
8
9
T/P MUTE
HKS
DTMF
MODE
R4
R3
R2
R1
VDD
DP
12
18
17
16
15
14
10
11
13
C5
PIN DESCRIPTION
SYMBOL
PIN
I/O
FUNCTION
Column-
Row
Inputs
1
-
5
&
15
-
18
I
The keyboard inputs may be used with either a standard 5
5
keyboard or an inexpensive single contact (Form A) keyborad.
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
I, O
A built-in inverter provides oscillation with an inexpensive 3.579545
MHz crystal or ceramic resonator.
T/P
MUTE
9
O
The T/P MUTE is a conventional CMOS N-channel open drain output.
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 V
SS
places the dialer in tone mode.
Pulling mode pin to V
DD
places the dialer in pulse mode with M/B ratio
40:60
(20 ppS only for W91433N and 10 ppS for the others, M/B = 40:60).
Floating mode pin places the dialer in pulse mode with M/B ratio 33:67
(20 ppS only for W91433N and 10 ppS for the others).
W91430N SERIES
Publication Release Date: May 1997
- 3 -
Revision A3
Pin Description, continued
SYMBOL
PIN
I/O
FUNCTION
HKS
10
I
Hook switch input.
HKS = V
DD
: On-hook state. Chip in sleeping mode, no operation.
HKS = V
SS
: Off-hook state. Chip is enabled for normal operation.
HKS pin is pulled to V
DD
by internal resistor.
DP
11
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 in pulse mode is shown in Figure 1(a, b, c).
V
DD
, V
SS
14, 6
I
Power input pins.
DTMF
12
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).
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
W91430N SERIES
- 4 -
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 C5)
T/P MUTE
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
KEYBOARD
INTERFACE
CONVERTER
HKS
DP
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
C2
C3
C4
C5
1
2
3
S
M1
R1
4
5
6
F4
M2
R2
7
8
9
A
M3
R3
/T
0
#
R/P
SAVE
R4
F1
F2
F3
VX
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
M1 to M3: One-touch memory
F1, ..., F4: Flash keys, F1 = 600 mS, F2 = 300 mS, F3 = 73 mS, F4 = 100 mS
Note: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, #; Mn: M1, ..., M3; Ln: 0, ..., 9 ; Fn: F1, ..., F4
W91430N SERIES
Publication Release Date: May 1997
- 5 -
Revision A3
Normal Dialing
OFF HOOK
,
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
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
,
Mn
(or
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
,
Mn
(or
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
1.
OFF HOOK
,
Mn
2.
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.
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