W91462N Datasheet PDF - Winbond


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W91462N
Winbond

Part Number W91462N
Description 3-MEMORY TONE/PULSE DIALER
Page 15 Pages

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W91460N SERIES
3-MEMORY TONE/PULSE DIALER
WITH SAVE FUNCTION
GENERAL DESCRIPTION
The W91460N series are Si-gate CMOS ICs that provide the necessary signals for either tone or
pulse dialing. The W91460N series features save memory and 3 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
Redial memory cascadable with normal dialing; dialing length is unlimited, but if length exceeds
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, PT (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 1.0 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 W91460N series are shown in the following table:
TYPE NO.
W91462N
W91466N
REPLACEMENT
TYPE NO.
W91462
W91463
W91464
W91465
W91466
W91467
PULSE
(ppS)
FLASH
(mS)
10 600/300/73/100
20 600/300/73/100
PAUSE
(S)
3.6
M/B
Pin
3.6 Pin
Publication Release Date: May 1997
- 1 - Revision A2



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PIN CONFIGURATION
W91460N SERIES
C1
C2
C3
C4
C5
VSS
XT
XT
T/P MUTE
1
2
3
4
5
6
7
8
9
18 R4
17 R3
16 R2
15 R1
14 VDD
13 MODE
12 DTMF
11 DP
10 HKS
PIN DESCRIPTION
SYMBOL PIN I/O
FUNCTION
Column-
Row
Inputs
15
&
1518
I 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 µC 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 VSS places the dialer in tone mode.
Pulling mode pin to VDD places the dialer in pulse mode with M/B ratio
40:60 (10 ppS for W91462N and 20 ppS for W91466N).
Floating mode pin places the dialer in pulse mode with M/B ratio
33.3:66.7 (10 ppS for W91462N and 20 ppS for W91466N).
-2-



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W91460N SERIES
Pin Description, continued
SYMBOL PIN I/O
FUNCTION
HKS
10 I Hook switch input.
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 an 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 for pulse mode is shown in Figure 1(a, b, c).
VDD, VSS 14, 6 I Power input pins.
DTMF
12 O In pulse mode, this pin remains in low state at all times.
In 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 Actual Error %
R1 697
699 +0.28
R2 770
766 -0.52
R3 852
848 -0.47
R4 941
948 +0.74
C1 1209
1216
+0.57
C2 1336
1332
-0.30
C3 1477
1472
-0.34
Publication Release Date: May 1997
- 3 - Revision A2



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W91460N SERIES
BLOCK DIAGRAM
ROW
(R1 to R4, Vx)
COLUMN
(C1 to C5)
KEYBOARD
INTERFACE
DTMF
D/A
CONVERTER
XT XT
SYSTEM CLOCK
GENERATOR
HKS
READ/WRITE
COUNTER
CONTROL
LOGIC
MODE
LOCATION
LATCH
RAM
PULSE
CONTROL
LOGIC
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
T/P MUTE
DP
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1 C2 C3 C4 C5
1 2 3 S M1
4 5 6 F4 M2
7 89
M3
/T 0 # R/P SAVE
F1 F2 F3
R1
R2
R3
R4
VX
S: Store function key
R/P: Redial and pause function key
SAVE: Save function key
/T: in tone mode and PT in pulse mode
M1, ..., 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; Fn: F1, ..., F4
-4-




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