Winbond Electronics W91466N, W91462N Datasheet

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, 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 1.0 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. REPLACEMENT

TYPE NO.

W91462

W91462N W91463 10 600/300/73/100 3.6 Pin

W91464
W91465

W91466N W91466 20 600/300/73/100 3.6 Pin

W91467

PULSE

(ppS)

FLASH

(mS)

PAUSE

(S)

M/B

Publication Release Date: May 1997

- 1 - Revision A2

PIN CONFIGURATION

XT

XT

2

3

4

5

7

8

9

HKS

DTMF

MODE

R4

R3R2R1

12

18

16

15

14

10

11

13

XT

MUTE

MUTE

C1
C2
C3
C4
C5

V

SS

T/P MUTE

W91460N SERIES

1

17

V

DD

6

DP

PIN DESCRIPTION

SYMBOL PIN I/O FUNCTION

Column-

Row

Inputs

XT,

T/P

1−5

&

15−18

7, 8 I, O A built-in inverter provides oscillation with an inexpensive 3.579545

9 O

MODE 13 I Pulling mode pin to VSS places the dialer in tone mode.

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.

MHz crystal or ceramic resonator.
The T/P

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.

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 -

W91460N SERIES

HKS

HKS

HKS

HKS

DP

R1R2R3

R4

C1

C2

C3

Pin Description, continued

SYMBOL PIN I/O FUNCTION

10 I Hook switch input.

= VDD: On-hook state. Chip in sleeping mode, no operation.
= VSS: Off-hook state. Chip is enabled for normal operation.
pin is pulled to VDD by an internal resistor.

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 %

697
770

699
766

+0.28

-0.52
852
941

1209
1336

1477

848
948

1216
1332
1472

-0.47

+0.74
+0.57

-0.30

-0.34

Publication Release Date: May 1997

- 3 - Revision A2

BLOCK DIAGRAM

W91460N SERIES

XT XT

ROW

(R1 to R4, Vx)

KEYBOARD
INTERFACE

COLUMN

(C1 to C5)

DTMF

D/A

CONVERTER

FUNCTIONAL DESCRIPTION

Keyboard Operation

C1 C2 C3 C4 C5

LOCATION
LATCH

ROW & COLUMN
PROGRAMMABLE

COUNTER

READ/WRITE
COUNTER

RAM

DATA LATCH

& DECODER

SYSTEM CLOCK
GENERATOR

CONTROL
LOGIC

PULSE
CONTROL
LOGIC

HKS

MODE

T/P MUTE

DP

1 2 3 S M1 R1
4 5 6 F4 M2 R2
7 8 9 M3 R3

∗/T

0 # R/P SAVE R4

F1 F2 F3 VX

• S: Store function key

• R/P: Redial and pause function key

• SAVE: Save function key

• ∗/T: ∗ in tone mode and P→T 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 -

W91460N SERIES

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 exceeds 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 the pause function.

3. If redialing length exceeds 32 digits, the redialing function will be inhibited.

Number Store

OFF

HOOK

1. If the sequence of the dialed digits D1, D2, ..., Dn has not
finished,

2. D1, D2, ..., Dn will be dialed out and stored in memory location.
OFF HOOK , S , D1 , D2 ,

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

function key; */T is the pulse to tone function key.

The store mode is released after the store function is executed or when the state of the hook switch
is changed.

, D1 , D2 ,

mode,

Dn , S , S , Mn

...,

S will be ignored.

Dn , S , Mn

...,

R/P is the pause

Repertory Dialing

OFF HOOK , Mn

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.

Pulse-to-tone (*/T)

Publication Release Date: May 1997

- 5 - Revision A2