W91570DN SERIES

23-MEMORY TONE/PULSE DIALER WITH

AUTOREDIAL RTC AND LCD DISPLAY FUNCTIONS

Publication Release Date: May 1997

- 1 -

Revision A2

GENERAL DESCRIPTION

The W91570DN series ICs are Si-gate CMOS ICs that provide the signals needed for either pulse or
tone dialing. They feature 23 number memories and a 16-digit LCD driver for displaying telephone
numbers and calling time. A real time clock is included to display the time of day. The W91570DN
series is fabricated using CMOS technology providing good performance in low voltage, low power
applications.

FEATURES

Three by 32 digits for redial, save and mercury memory

Twenty by 16 digits for one-touch direct or two-touch indirect repertory memory

Uses 6

10 keyboard

Pause, Pulse-to-tone (*/T) and flash can be stored as a digit in memory

Minimum tone output duration: 87 mS

Minimum intertone pause: 87 mS

Tone/Pulse mode pin selectable

Make/Break ratio pin selectable

Dialing rate (10 or 20 ppS) pin selectable

Pause time (2.0 or 3.6 Sec) selectable by keypad

Flash break time (100, 300, or 600 mS) selectable by keypad

Built-in 12 or 16-digit LCD driver

(

1/4 duty, 1/3 bias) selectable by mask option

Built-in calling timer from [00:00] to [59:59]

Uses 3.579545 MHz TV quartz crystal or ceramic resonator

Uses 32768 Hz crystal as RTC frequency base

Packaged in 80-pin plastic QFP with RTC

Provides one-key-redial and auto-redial functions

Switchable 24-hour clock or 12-hour clock with p.m. mode

0 or 9 dialing inhibition pin for PABX systems or long distance dialing lock out

On-hook debounce: 150 msec in normal mode and 20 msec in lock mode

Off-hook delay 300 mS in lock mode (i.e.

will keep low for 300 mS while off hook)

First key-in delay: 300 msec in lock mode

MUTE key for speech mute

Cascade and mixed dialing allowed

The functions of the different dialers in the W91570DN series are shown in the following table:

PRODUCT NO.

LCD DIGITS

LOCK

RTC BATTERY

W91572DNF

1.5V

W91574DNF

W91576DNF

1.5V

W91578DNF

W91570DN SERIES

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PIN CONFIGURATION

PIN NAME

QFP-80

PIN NAME QFP-80

SEG29

COL2

TESTL

SEG9

SEG30

COL3

SET

SEG10

SEG31

COL4

XT2

SEG11

SEG32

COL5

XT2

SEG12

TEST

COL6

LCD

SEG13

KMUTE

COL7

RTC2

SEG14

COL8

SEG15

TEST1

COL9

SEG16

ROW1

COM1

SEG17

NC/

LOCK

ROW2

COM2

SEG18

B/M

ROW3

COM3

SEG19

DTMF

ROW4

COM4

SEG20

SET

RTC

ROW5

SEG1

SEG21

XT1

SEG2

SEG22

H/P MUTE

XT1

SEG3

SEG23

T/P

MUTE

HKS

SEG4

SEG24

HFO

HFI

SEG5

SEG25

C10

RTC1

SEG6

SEG26

MODE

TEST2

SEG7

SEG27

COL1

ARD

SEG8

SEG28

W91570DN SERIES

Publication Release Date: May 1997

- 3 -

Revision A2

PIN DESCRIPTION

SYMBOL

PIN NO.

I/O

FUNCTION

Row,
Column
Inputs

and

The keyboard inputs may be used with either the standard 6

keyboard, an inexpensive single contact (form A) keyboard or
electronic input.

A valid key entry is defined by a single row being connected to
a single column.

XT1,

34, 35

A built-in inverter provides oscillation with an inexpensive
3.579545 MHz crystal or ceramic resonater.

The oscillator ceases when a keypad input is not sensed after
chip enable and dialing is finished. The crystal frequency
deviation is

0.02%.

T/P

MUTE

The T/P

MUTE

is a conventional CMOS N-channel open drain

output.
The output transistor is switched on low level during the dialing
sequence (both pulse and tone mode), one-key redial break,
auto redial break and flash break. Otherwise, it is switched off.

H/P MUTE

The H/P MUTE is a conventional CMOS inverter output. During
pulse dialing, one-key redial break, auto redial break, flash
break, hold, and mercury functions, this pin will output an active
high. It remains in a low state at all other times.

KMUTE

The

KMUTE

is a CMOS N-channel open drain output. The

output transistor is switched on only during mute function.
Otherwise, it is switched off.

HKS

Hook switch input.

HKS

= V

or floating: On-hook state. Chip in sleeping mode,

no operation.

HKS

= V

: Off-hook state. Chip enable for normal operation.

HKS

pin is pulled to V

by internal resistor.

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Pin Description, continued

SYMBOL

PIN NO.

I/O

FUNCTION

HFI

, HFO

37, 17

Handfree control pins. A low pulse on the

HFI

input pin toggles

the handfree control state.

Status of the handfree control is listed in the following table:

CURRENT STATE

Input

HFO

Dialing

High

Yes

On Hook

High

Low

Off Hook

High

Low

Yes

On Hook

Off Hook

Low

Yes

Off Hook

Low

On Hook

Low

Off Hook

High

On Hook

High

Yes

Low

Hook SW.

HFO

NEXT STATE

HFI

The

HFI

pin is pulled to V

by internal resistor.

Detailed timing diagrams are shown in Figure 4(a), 4(b).

C10

This pin is a CMOS N-channel open drain output. The flash key

will cause

C10

to go active in either pulse mode or tone

mode. In lock mode, the

C10

keeps low for 300 mS during

off-hook delay time (If first off-hook occured after power-on

reset, the

C10

will keep high for 100ms then go low 200

mS. It will be recovered when first key-in was accepted). The
timing diagram is shown as Figure 1(a), 1(b), 1(c), 1(d).

DTMF

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), 2(b), 2(c), 2(d).

Specified

Actual

Error %

OUTPUT FREQUENCY

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

MODE

Pulling the mode pin to V

places the dialer in tone mode.

Pulling the mode pin to V

places the dialer in pulse mode

and the dialing rate is 10 ppS.

Floating the mode pin places the dialer in pulse mode and the
dialing rate is 20 ppS.

W91570DN SERIES

Publication Release Date: May 1997

- 5 -

Revision A2

Pin Description, continued

SYMBOL

PIN NO.

I/O

FUNCTION

B/M

Make:Break ratio select pin.

If B/M = V

, the M/B ratio is 40:60.

If B/M = V

, the M/B ratio is 33.3:66.7.

The B/M pin is pulled to V

by internal resistor.

LOCK

(for all lock

version)

The

LOCK

pin is used to prevent "0" or "9" dialing under PABX

system long distance call control. When the first key input after
reset is "0" or "9", all the key inputs, including "0" or "9" key,
become invalid, and the chip generates no output.

The telephone is reinitialized by a reset.

The following table describes the functions of the

LOCK

pin:

LOCK PIN

Floating

FUNCTION

Normal dialing

"0", "9" dialing inhibited

"0" dialing inhibited

COM1 to
COM4

49 to 52

COM1 to COM4 are the common signal output terminal for the
1/4 duty LCD.

SEG1 to
SEG32

53 to 80,

1 to 4

SEG1 to SEG32 are the 16-digit segment signal outputs.

LCD

Power supply pin for LCD driver.

A 0.1

F capacitor is connected between V

LCD

and V

CP, CN

48, 47

CP is the voltage control capacitor positive pin.

CN is the voltage control capacitor negative pin.

A 0.1

F capacitor is connected between these two pins.

, V

9, 14

Power input pins.

XT2,

XT2

43, 44

A quartz crystal oscillator provides an RTC frequency time base
of 32.768 KHz.

RTC1

RTC2

38, 46

Either V

RTC1

should be connected to a 1.5V battery

(W91572DN/576DN) or V

RTC2

should be connected to a 3.0V

battery(W91574DN/578DN), which supplies the power source
for the RTC.

SET

RTC

In the chip enable state, pulling SET

RTC

to V

toggles the

RTC set function on/off, when the set function is toggled on, the
RTC can be set using the "HOUR" and "MIN" keypads.

W91570DN SERIES

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Pin Description, continued

SYMBOL

PIN NO.

I/O

FUNCTION

SET

If AP

SET

= V

or floating, 24-hour clock mode.

If AP

SET

= V

, 12-hour clock with p.m. mode.

ARD

Auto redial function selection.

ARD

BREAK PAUSE WAIT INTERVAL REPEAT TIMES

Floating

4 secs

30 secs

4 secs

1 sec

25 secs

30 secs

When ARD is left floating, the one-key redial function is
enabled.

The key tone output is a conventional CMOS inverter.

The key tone is generated as any valid key pressed, as the KT
pin generates a 1.2 KHz square wave which keeps on 35 mS;
otherwise, it remain in low state.

TEST,

TEST1

TEST2

TESTL

5, 8, 39,

For testing only.

(for

W91572/574/
W91576/578)

No connection.

W91570DN SERIES

Publication Release Date: May 1997

- 7 -

Revision A2

BLOCK DIAGRAM

ROW

COLUMN

DTMF

XT1

RAM

COUNTER

SYSTEM CLOCK

GENERATOR

LOCATION

LATCH

D/A

ROW & COLUMN

PROGRAMMABLE

COUNTER

DATA LATCH
& DECODER

READ/WRITE

(R1 to R5)

(C1 to C9)

CONTROL

LOGIC

PULSE/

CONTROL

LOGIC

KEYBOARD

INTERFACE

CONVERTER

SEGMENT OUTPUT

DECODER

BACKPLANE SIGNAL

GENERATOR

COM2

COM1

COM3

L.C.D.

COM4

XT2

REAL TIME CLOCK

GENERATOR

TONE

HKS

MODE

B/M

HFI

H/P MUTE

HFO

LOCK

DP/C10

T/P MUTE

ARD

KMUTE

SET

RTC

RTC1

RTC2

LCD

FUNCTIONAL DESCRIPTION

Keyboard Operation

DP / C10

HOUR

M10

M15

HOLD1

MUTE

MIN

M11

M16

HOLD2

SAVE

M12

M17

MER

*/T

R/P1

OKR

M13

M18

CHK

TIM

M14

M19

RTC

R/P2

ICON12

ICON13

ICON14

ICON15

ICON16

/R6

W91570DN SERIES

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E: Store digit

MUTE: Mute key

F1, F2, F3: Flash keys

SAVE: Save memory key

MER: Mercury memory key

OKR: One-key redial function

RTC: Real time clock toggle key

HOLD1, HOLD2: Hold function keys

R/P1, R/P2: Redial and pause function keys, P1 is 3.6 sec. and P2 is 2.0 sec.

TIM: a. Display last calling time

b. Start and/or stop counting up calling time

HOUR and MIN: Active when setting mode is operated after off-hook

A1, A2: Indirect repertory memory dialing function keys, A1 for page 1 and A2 for page 2

If Lp = 0 to 9, Mp = M0 to M9, and Mq = M10 to M19, then

a. A1 + Lp (or Mp) the memory location M0 to M9 will be selected

b. A2 + Lp (or Mp) the memory location M10 to M19 will be selected

c. A1 (or A2) + Mq the memory location M10 to M19 will be selected

*/T: * in tone mode and P

T in pulse mode

CHK: a. Check dialing number
b. Check last dialing time
c. Memory check (except mercury)

ICON12, ..., ICON16: Keys reserved for user, can be toggled on any time when the chip is enabled

Notes: D1, ..., Dn, D1', ..., Dn': 0, ..., 9,

/T, #

R/P: R/P1 or R/P2

An: A1, A2

Ln: 0, ..., 9, map to indirect memory location 0, ..., 9

Mn: Direct memory location M0, ..., M19

Normal Dialing

OFF HOOK

(or

ON HOOK

HFI

¡õ

, ...,

1. D1, D2, ..., Dn will be dialed out.

2. Dialing length is unlimited, but redial is inhibited if the length oversteps 32 digits in normal dialing.

Redialing

If ARD pin = floating, the one-key redial function is selected:

OFF HOOK

(or

ON HOOK

HFI

¡õ

Check Memory

(or

Number Store

, ...,

, Busy,

ON HOOK

OFF

(or

W91570DN SERIES

Publication Release Date: May 1997

- 9 -

Revision A2

Come

HOOK

ON HOOK

HFI

¡õ

R/P

a.
The

R/P

key can execute the redial function only as the first dialing after off-hook; otherwise,
it

will invoke the pause
function.

b. The redial memory contents will be D3, ..., Dn.

c. Redial memory can be checked in memory check mode.

d. If redialing length oversteps 32 digits, the redialing function will be inhibited.

OFF HOOK

(or

ON HOOK

HFI

¡õ

, ...,

, Busy,

OKR

a. If the dialing
of

is finished, pressing the

OKR

key will cause the pulse output

C10

to go low for 2.2 seconds break time and 0.6 seconds pause time will be added

automatically.

b. If the pulses of the dialed digits

have not finished,

OKR

will be ignored.

c. The one-key redialing function timing diagram is shown in Figure 3.

Number Entry

OFF HOOK

(or

ON HOOK

HFI

¡õ

...,

(many

times

same as one time),

(or

ON HOOK

D1, D2, ..., Dn will be stored in memory location Mn (or Ln) and will be dialed out.

OFF HOOK

(or

ON HOOK

HFI

¡õ

, ...,

(could be skipped),

(or

ON HOOK

OFF HOOK

(or

ON HOOK

HFI

¡õ

, ...,

(or

ON HOOK

a. D1, D2, ..., Dn will be stored in memory location Mn (or Ln) but will not be dialed out.

b. R/P and */T

keys can be stored as a digit in memory, in store
mode,

R/P

is the pause function key.

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

W91570DN SERIES

- 10 -

switch changes is executed.

OFF HOOK

(or

)

The redial content excluding memory dialing will be copied to memory location Mn (or Ln).

5. The first 16 digits will be stored into memory, if the key-in number over 16 digits.

Save

OFF

HOOK

(or

ON HOOK

HFI

¡õ

, D2

, ...,

CONVERSATION,

D1'

D2'

, ...,

Dn'

SAVE

D1', D2', ..., Dn' will be stored in save memory but will not be dialed out.

OFF

HOOK

(or

ON HOOK

HFI

¡õ

, ...,

SAVE

a. If the dialing sequence D1, D2, ..., Dn has not finished, SAVE will be ignored.

b. If the sequence off hook, D1, D2, ..., Dn (dialing finish), SAVE, SAVE is keyed in, D1, D2, ...,
Dn

will be copied to save memory and D1, D2, ..., Dn will be dialed out again.

c. If the sequence off hook, D1, D2 (dialing finish), SAVE, D3, D4 (dialing finish), SAVE is keyed
in,

D1, D2 will be copied to save memory and D3, D4 will not be copied to save memory.

d. All above sequences will be displayed on LCD.

Mercury

OFF

HOOK

(or

ON HOOK

HFI

¡õ

, D2

, ...,

CONVERSATION,

D1'

D2'

, ...,

Dn'

MER

D1', D2', ..., Dn' will be stored in mercury memory and display on the LCD, but will not be dialed
out.

2. MERCURY memory content = D1', D2', ..., Dn'

OFF HOOK

(or

ON HOOK

& HFI

¡õ

, D2

...,

MER

ON HOOK

Come,

OFF

HOOK

(or

ON HOOK

HFI

¡õ

MER

a. The dialing sequence will be D1, D2, ... Dn, on hook, off hook, D1', D2', ..., Dn'.

W91570DN SERIES

Publication Release Date: May 1997

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Revision A2

b. The MER key can be used to execute the mercury function only when it is the first key-in in
dialing

mode after off-hook or first priority flash operation.

c. The contents of mercury memory will not be displayed on the LCD except for mercury mark.

d. If the sequence D1, D2, ..., Dn, MER, on-hook, off-hook, MER is keyed in, D1, D2, ..., Dn will not

be copied to mercury memory, D1', D2', ..., Dn' will be dialed out, and the mercury mark (icon 10)

will be blinking after off-hook. Detailed timing diagram is shown in Figure 5.

e. Mercury memory cannot be checked in memory check mode.

W91570DN SERIES

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Repertory Dialing

1. One-touch direct repertory dialing.

OFF HOOK

(or

ON HOOK

HFI

¡õ

(or

R/P

)

OFF HOOK

(or

ON HOOK

HFI

¡õ

SAVE

(or

MER

)

OFF HOOK

(or

ON HOOK

HFI

¡õ

(or

R/P

SAVE

2. Two-touch indirect repertory dialing.

OFF HOOK

(or

ON HOOK

HFI

¡õ

(or

)

Access Pause

OFF HOOK

(or

ON HOOK

HFI

¡õ

R/P

, ...,

, Busy, Come,

ON HOOK

OFF

HOOK

(or

ON HOOK

HFI

¡õ

R/P

1. The first R/P functions as a pause key and the second as a first key-in redial key.

2. The pause function can be stored in memory, and only one R/P key can be released to the user.

3. The pause function is executed in normal dialing, redialing, or memory dialing.

4. The pause duration of 2.0 or 3.6 seconds per pause is selected through the keypad.

5. The default pause duration is 3.6 seconds after power on.

6. The pause function timing diagram is shown in Figure 6.

Pulse- to-tone (*/T)

OFF HOOK

(or

ON HOOK

HFI

¡õ

, ...,

*/T

D1'

D2'

, ...,

Dn'

1. If the mode switch is set to pulse mode, then the output signal will be:

D1, D2, ... Dn, Pause (2.0 sec/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 after the digits have been dialed out and can be reset to pulse
mode only by going on-hook.

4. The pause time of pulse-to-tone is default to 3.6 seconds.

5. The pulse-to-tone function timing diagram is shown in Figure 7.

W91570DN SERIES

Publication Release Date: May 1997

- 13 -

Revision A2

Flash (F = F1, F2, F3)

OFF HOOK

(or

ON HOOK

HFI

¡õ

1. The dialer will execute a flash break time of 600 mS (F1), 300 mS (F2), or 100 mS (F3) and pause

time of 1S before the next digit (except flash key) is dialed out.

2. Flash keeps first priority in normal dialing but insert flash can be stored into memory when flash is

the first digit in memory. In this condition, only one flash key can be released to the user.

a. E, F1, D1, D2, D3, E, Mn then the digit stored in Mn will be F1, D1, D2, D3.
b. E, D1, F1, D2, D3, E, Mn then the digit stored in Mn will be D1, D2, D3.
c. F1, D1, D2, D3, E, Mn then the digit stored in Mn will be D1, D2, D3.

3. The system will return to the initial state after the flash pause time is finished.

4. Keyboard functions are inhibited when flash break is being executed.

5. The flash timing diagram is shown in Figure 8.

Mute

OFF HOOK

(or

ON HOOK

HFI

¡õ

MUTE

1. The MUTE is switched on and off by a toggle switch.

2. The function timing diagram is shown in Figure 9.

Hold Key

OFF HOOK

(or

ON HOOK

HFI

¡õ

HOLD1

(or

HOLD2

)

1. The hold function is toggled on and off by Hold1 or Hold2 key. When the hold function is toggled

on, the hold mark (icon 4) will be lit and all key-ins (except hold keys and icon keys) will be

ignored.

2. The following are examples of hold function toggled on and off:

OFF HOOK

HOLD1

(or

HOLD2

HOLD1

(or

HOLD2

)

OFF HOOK

HOLD1

(or

HOLD2

HFI

¡õ

OFF HOOK

HOLD1

(or

HOLD2

ON HOOK

HFI

¡õ

ON HOOK

HFI

¡õ

HOLD1

(or

HOLD2

HFI

¡õ

3. Hold1 and Hold2 have the same function in off-hook state. The difference between Hold1 and
Hold2 are shown as follows:

a. If

OFF HOOK

HOLD1

(or

HOLD2

ON HOOK

HOLD1

is entered, then the

dialer will be off-line.

W91570DN SERIES

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OFF HOOK

HOLD1

(or

HOLD2

ON HOOK

HOLD2

is entered, then

the dialer stay at hold function.

b. If

ON HOOK

HFI

¡õ

HOLD1

(or

HOLD2

HOLD1

is entered, then

the dialer will be off-line.

ON HOOK

HFI

¡õ

HOLD1

, (or

HOLD2

is entered, then

the dialer stay at hold function.

4. The function timing diagram is shown in Figure 10(a), 10(b), 10(c).

Adjusting Time Setting

OFF HOOK

(or

ON HOOK

HFI

¡õ

SET

RTC

¡õ

HOUR

MIN

SET

RTC

¡õ

(or

ON HOOK

)

1. Only HOUR and MIN keys are valid in set RTC mode.

2. Hours and minutes count forward as long as the HOUR or MIN key is pressed.

3. The on/off function of SET

RTC

is toggled, and the dialer will go back to a previous state after the

toggle off SET

RTC

function.

4. If the dialing sequence D1, D2, ..., Dn (including flash and pause) has not finished, SET

RTC

(or

'RTC' key pressed) will be ignored.

RTC Display Mode

OFF HOOK

(or

ON HOOK

HFI

¡õ

RTC

1.The real time clock display mode can be toggled on and off by RTC key.

2. The icon display will not be changed when enter RTC display mode and set RTC mode.

Check Key

OFF HOOK

(or

ON HOOK

& HFI

¡õ

CHK

R/P

(or

OKR

SAVE

, ..., etc.)

The redial (or memory) content will be displayed on the LCD when either

R/P

OKR

is keyed in.

W91570DN SERIES

Publication Release Date: May 1997

- 15 -

Revision A2

Auto Redial

If ARD pin = V

or V

, the auto redial function is selected:

OFF HOOK

(or

ON HOOK

HFI

¡õ

OKR

waiting interval

Time Zone (C)

Auto dialing

Time Zone (A)

Pause

Break

Time

Pause

Break

Time Zone (A)

waiting interval

Auto dialing

Time Zone (B)

Time

repeat till

n-1 times.

Time Zone (B)

1. During time zone (B) the keypads are inhibited, and in time zone (A), (C) the auto redial can be

interrupted by pressing any keypad or by going off-hook.

2. The visible dialing number will be blinking during the waiting time interval.
3. If OKR is the first key-in after off-hook or handfree then the first break and pause time will be

ignored.

4. The following show examples to interrupt auto redial function:

OFF HOOK

(or

ON HOOK

HFI

¡õ

OKR

Any Keypad

(at break time and

waiting interval)

5. If

ON HOOK

HFI

¡õ

OKR

OFF HOOK

a. When in time zome (A) or (C), the auto-redial function will be interrupted and changed to hook

mode after

OFF HOOK

b. When in time zome (B), the auto-redial functiion will continue and changed to hook mode after

OFF HOOK

6. If

ON HOOK

HFI

¡õ

OKR

, HFI

¡õ

(any time) is entered, the dialer will be off-line.

7. The auto redial function timing diagram is shown in Figure 11(a), 11(b).

8. The calling time will auto-count when the auto-redial function is interrupted in break time zone (A)

and (C).

TIM

OFF HOOK

(or

ON HOOK

HFI

¡õ

, ...,

(or

Redialing

Repertory dialing 1

), CONVERSATION

1. If no key is pressed after dialing is finished, the LCD will display counting time after 6 seconds.
2. If the dialing sequence D1, D2, ..., Dn has not finished, TIM will be ignored.
3. The timer will be initialized by flash and auto redial.

W91570DN SERIES

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Cascaded and Mixed Dialing

Cascaded Dialing

1. Definition of cascaded dialing:

In cascaded dialing, a new sequence may be pressed before the previous sequence has been sent
out completely. The following are examples of cascaded dialing:

Example 1:

Normal dialing

+ Repertory dialing 1

+ Repertory dialing 2

+...

Example 2:

Repertory dialing 1

+ Normal dialing

+ Repertory dialing 2

+...

Example 3:

Redialing

+ Normal dialing

+ Repertory dialing 1

+...

2. Normal dialing, redialing, or repertory dialing as represented by each rectangle above is treated as

one sequence.

3. At most 64 digits are allowed in cascaded dialing, but there is no limitation on the number of

sequences.

4. The content of cascaded dialing may a combination of normal dialing, redialing, and repertory

dialing. Redialing is vaild only as the first key-in, however.

5. If

ON HOOK

OFF HOOK

OKR

is entered, then the cascaded dialing sequence

described in the above examples will be dialed out only if there are not more than 32 digits. If the
sequence exceeds 32 digits then the redialing is inhibited.

Mixed Dialing

1. Definition of mixed dialing:

The examples of cascaded dialing given above are also examples of mixed dialing except that in
mixed dialing a new sequence may be accepted only when the previous sequence has been dialed
out completely.

2. There is no limitation on the number of digits and sequences in the mixed dialing.

3. The content of mixed dialing may be a combination of normal dialing, memory dialing, or one-key

redialing.

4. If

ON HOOK

OFF HOOK

OKR

is entered, then the mixed dialing sequence

described in the above examples will be dialed out only if the total number of digits does not

exceed 32. If the total exceeds 32 digits, then redialing is inhibited.

Combining of Cascaded and Mixed Dialing

1. Cascaded dialing and mixed dialing may be combined, and each follows the rules described
above.

2. To apply redialing to combinations of cascaded and mixed dialing:

ON HOOK

OFF HOOK

OKR

then redialing will be executed only if the total number of

digits does not exceed 32. Otherwise, the redialing is inhibited.

W91570DN SERIES

Publication Release Date: May 1997

- 17 -

Revision A2

3. If there had been n cascaded sequences with a total of 60 digits dialed, then for the (n+1)th

cascaded sequence, one 4-digit normal dialing sequence or one complete repertory dialing
sequence (length up to 32 digits) can be dialed. The (n+2)th sequence will not be accepted for
cascaded dialing.

4. After a total of 64 digits of cascaded dialing have been completed, mixed dialing can be added.

ABSOLUTION MAXIMUM RATINGS

PARAMETER

SYMBOL

RATING

UNIT

DC Supply Voltage

-0.3 to +7.0

0.3

Input/Output Voltage

+ 0.3

0.3

+ 0.3

Power Dissipation

120

Operating Temperature

OPR

-0.5 to +70

Storage Temperature

STG

-55 to +125

Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.

ELECTRICAL CHARACTERISTICS

DC CHARACTERISTICS

= 2.5V. F

OSC

= 3.58 MHz, T

= 25

C, all outputs unloaded.)

PARAMETER

SYM.

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Operating Voltage

2.0

5.5

Operating Current

Tone, Unloaded

0.5

0.7

Pulse, Unloaded

0.4

0.5

Standby Current

HKS

= 0, Unloaded

and no key entry

Memory Retention Current

HKS = 1
V

= 1.0V

0.5

Tone Output Voltage

Row group
R

= 10 K

130

150

170

mVrm

Pre-emphasis

Col/Row

= 2.0 to 5.5V

W91570DN SERIES

- 18 -

DC Characteristics, continued

PARAMETER

SYM.

CONDITIONS

MIN.

TYP.

MAX.

UNIT

DTMF Distortion

THD

= 10 K

= 2.0 to 5.5V

-30

-23

DTMF Output DC Level

TDC

= 2.0 to 5.5V

1.0

3.0

DTMF Output Sink Current

= 0.5V

0.2

Output Sink Current

= 0.5V

0.5

Common Output Voltage

4.2

4.5

4.8

0.3

Common Output Current

-20

Segment Output Voltage

4.2

4.5

4.8

0.3

Segment Output Current

-5

RMS Voltage Across a

2.34

2.6

Vrms

Segment

OFF

1.5

1.65

Average DC Offset Voltage

100

HFI High Voltage

HFIH

0.8

HFI Low Voltage

HFIL

0.2

T/P

MUTE

Output Sink

Current

TML

TMO

= 0.5V

0.5

H/P MUTE Output Drive
Current

HMH

HMO

= 2.5V

0.5

H/P MUTE Output Sink
Current

HML

HMO

= 0.5V

0.5

K MUTE

Output Sink

Current

KML

TMO

= 0.5V

0.5

Keypad Input Drive Current

= 0V

Keypad Input Sink Current

VI = 2.5V

200

400

Keypad Resistance

Control Input Pull Up/Down
Resistor

CIP

B/M,

HFI

100

HKS Input Pull High
Resistor

500

2000

AC CHARACTERISTICS

W91570DN SERIES

Publication Release Date: May 1997

- 19 -

Revision A2

= 2.5V, F

OSC.

= 3.58 MHz, T

= 25

C, all outputs unloaded.)

PARAMETER

SYM.

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Key-in Debounce

KID

Key Release Debounce

KRD

Off Hook Delay Time

OFD

300

First Key-in Delay Time

FKD

300

On Hook Debounce Time

OHD

Unlock

150

Lock

Key Tone Frequency

1.2

KHz

Key Tone Duration

KTD

Key Tone Delay

Pulse Mute Delay

B/M = V

33.3

Pre-digit-pause

(1)

PDP1

B/M = V

10 ppS

B/M = V

33.3

Pre-digit-pause

(2)

PDP2

B/M = V

20 ppS

B/M = V

16.7

Inter-digit Pause

IDP1

10 ppS

800

(Auto Dialing)

IDP2

20 ppS

500

Make/Break Ratio

M:B

B/M = V

40:60

B/M = V

33:67

Tone Output Duration

Inter-tone Pause

ITP

600

Flash Break Time

300

100

Flash Pause Time

F1, F2, F3

Pause Time

R/P1

3.6

R/P2

2.0

One Key Redialing Break Time

One Key Redialing Pause Time

W91570DN SERIES

- 20 -

AC Characteristics, continued

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Auto Redialing

ARB

ARD = V

Break Time

ARD = V

Auto Redialing

APR

ARD = V

Pause Time

ARD = V

Auto Redialing

ARD = V

Waiting Interval

ARD = V

LCD Frame Frequency

LCD

RTC DC CHARACTERISTICS

RTC

= 1.5V, V

= 0V , F

OSC

. = 32,768 Hz, T

= 25

C, all outputs unloaded.)

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply Voltage

RTC

1.2

1.5

1.8

Supply Current

RTC

No Load

2.0

4.0

OSC. Starting Time

OSC

OSC. Output Built-in Cap.

Cl = 12.5

OSC. in Trimmer Cap.

TRIM

Frequency Stability

f/f

= 1.3

to 1.6V

ppM

SET

RTC

Input High Voltage

SETH

-0.3

SET

RTC

Input Low Voltage

SETL

+0.3

Notes :

1. Crystal parameters suggested for proper operation are Rs < 100

, Lm = 96 mH , Cm = 0.02 pF , Cn = 5 pF , Cl = 18 pF, and

Fosc. = 3.579545 MHz

0.02%

2. Crystal oscillator accuracy directly affects these times.

W91570DN SERIES

Publication Release Date: May 1997

- 21 -

Revision A2

TIMING WAVEFORMS

IDP

HKS

KEY IN

T/P MUTE

H/P MUTE

IDP

KID

IDP

PDP

M B

KRD

< 600mS

< 300mS

KID

DTMF

OSC.

Low

OSCILLATION

PDP

DP/C10

Figure 1(a). Normal Dialing Timing Diagram (Pulse Mode without Lock Function)

HKS

KEY IN

DP/C10

T/P MUTE

H/P MUTE

OFD

IDP

PDP

KID

IDP

PDP

M B

KRD

DTMF

OSC.

Low

OSCILLATION

FKD

< 600mS

< 300mS

KID

Figure 1(b). Normal Dialing Timing Diagram (Pulse Mode with Lock Function)

W91570DN SERIES

- 22 -

Timing Waveforms, continued

HKS

KEY IN

T/P MUTE

H/P MUTE

R/P

KID

IDP

PDP

M B

DTMF

OSC.

Low

OSCILLATION

IDP

< 600mS

KRD

DP/C10

Figure 1(c). Auto Dialing Timing Diagram (Pulse Mode without Lock Function)

HKS

KEY IN

T/P MUTE

H/P MUTE

OFD

IDP

PDP

M B

DTMF

OSC.

Low

OSCILLATION

R/P

KID

IDP

FKD

< 600mS

300mS

DP/C10

Figure 1(d). Auto Dialing Timing Diagram (Pulse Mode with Lock Function)

W91570DN SERIES

Publication Release Date: May 1997

- 23 -

Revision A2

Timing Waveforms, continued

HKS

KEY IN

H/P MUTE

T/P MUTE

DTMF

KID

Low

KRD

< 600mS

< 300mS

OSC.

OSCILLATION

ITP

KID

High

ITP

OSCILLATION

KRD

DP/C10

Figure 2(a). Normal Dialing Timing Diagram (Tone Mode without Lock Function)

HKS

KEY IN

H/P MUTE

T/P MUTE

DTMF

KID

Low

KRD

< 600mS

< 300mS

OSC.

OFD

OSCILLATION

FKD

ITP

DP/C10

Figure 2(b). Normal Dialing Timing Diagram (Tone Mode with Lock Function)

W91570DN SERIES

- 24 -

Timing Waveforms, continued

HKS

KEY IN

H/P MUTE

T/P MUTE

DTMF

Low

R/P

KRD

< 600mS

OSC.

OSCILLATION

ITP

KID

High

OHD

DP/C10

Figure 2(c). Auto Dialing Timing Diagram (Tone Mode without Lock Function)

HKS

KEY IN

H/P MUTE

T/P MUTE

DTMF

R/P

KRD

< 600mS

Low

300mS

OSC.

OFD

OSCILLATION

Low

FKD

ITP

OHD

DP/C10

Figure 2(d). Auto Dialing Timing Diagram (Tone Mode with Lock Function)

W91570DN SERIES

Publication Release Date: May 1997

- 25 -

Revision A2

Timing Waveforms, continued

HKS

KEY IN

T/P MUTE

H/P MUTE

DTMF

OSC.

OFD

PDP

Low

OSCILLATION

OKR

FKD

< 600mS

300mS

OKR

KID

PDP

IDP

DP/C10

Figure 3. One-key Redial Timing Diagram

T/P MUTE

HKS

HFO

OSC.

HFI

H/P MUTE

High

OSC.

OFD

FKD

OSC.

OHD

Low

DP/C10

Figure 4(a). Handfree Timing Diagram (with Lock Function)

W91570DN SERIES

Publication Release Date: May 1997

- 27 -

Revision A2

Timing Waveforms, continued

HKS

KEY IN

T/P MUTE

H/P MUTE

DTMF

OSC.

Low

OSCILLATION

< 600mS

KID

R/P

OFD

300mS

PDP

IDP

PDP

FKD

OSCILLATION

DP/C10

Figure 6. Pause Function Timing Diagram (Pulse Mode)

HKS

KEY IN

T/P MUTE

H/P MUTE

DTMF

OSC.

OSCILLATION

< 600mS

KID

*/T

OFD

300mS

PDP

IDP

FKD

OSCILLATION

ITP

DP/C10

Figure 7. Pulse to Tone Timing Diagram

W91570DN SERIES

Publication Release Date: May 1997

- 29 -

Revision A2

HKS

OFF HOOK

ON HOOK

HFO

H/P MUTE

CHIP ENBLE

Low

High

HFI

T/P MUTE

HOLD KEY

Figure 10(a). Hold and Handfree Timing Diagram

Note: The HOLD KEY cannot be enabled when the chip is disabled.

T/P MUTE

HFI

HKS

OFF HOOK

HFO

High

H/P MUTE

CHIP ENBLE

HOLD KEY

Figure 10(b). Hold and Handfree Timing Diagram

Note: The HFI and HOLD KEY inputs will toggle the HFO signal; as soon as either HFI or HOLD KEY is activated, the HFO

signal will go high and previous activate inputs will be ignored.

W91570DN SERIES

- 30 -

Timing Waveforms, continued

T/P MUTE

HFI

HKS

ON HOOK

HFO

High

H/P MUTE

CHIP ENBLE

HOLD KEY

Figure 10(c). Hold and Handfree Timing Diagram

Note: Changing the state of the HKS signal from high to low will initialize the HFO and HPM MUTE signals.

KEY IN

OKR

ARB

AUTO

WAITING

ARP

REPEAT TILL

ARB

WAITING

ARP

INTERVAL

N-1 TIMES

REDIALING
INTERVAL

INTERVAL

OSC.

OSCILLATION

AUTO

REDIALING

INTERVAL

DP/C10

Figure 11(a). Auto Redialing Timing Diagram

Notes:

1. The auto redial function is enabled in off-hook or handfree state.

2. If OKR is the first key-in after off-hook or handfree then the first T

ARB

and T

ARP

will be ignored.

W91570DN SERIES

Publication Release Date: May 1997

- 33 -

Revision A2

C. Abbreviated Auto Dialing

Press the "A1" key in chip enable condition

(L5 = "9375607", here L5 is the fifth memory)

Press the "5" key

Off hook or press the "HFI" switch

(Here tone mode was selected).

Blinking

D. Memory Check

Off-hook or press the "HFI" switch

(L6 = "314P4430256", and here handfree and tone mode were selected)

Press the "A1" key

Press the "6" key

Blinking

Press the "CHK" key

(The auto(A) is shown on check and store mode)

W91570DN SERIES

- 40 -

LCD PATTERN FOR DATA

P T

CHECK

LOCK

MUTE

Pause/
Icon1

Inuse/
Icon
2

Flash/
Icon3

Hold/
Icon4

Handfree/
Icon5

Timer/
Icon6

Mercury/
Iocn10

Page 1 (for A1)/
Icon8

Icon11

Tone/
Icon7

Icon12

Icon13

Icon14

Icon15

Icon16

Page 2 (for A2)/
Icon9

ARD/

Notes:

1. The icon1 to icon 10 are controlled by function operation.

2. The icon 12 to icon16 can be toggled on/off individually, irrespective of keypad function.

3. The off-hook (or hand free) state of icon12 is on, the other icons are off.

4. The icon2 always blinked after power on.

W91570DN SERIES

Publication Release Date: May 1997

- 41 -

Revision A2

LCD PANEL PATTERN

1
0

1
1

1
2

1
3

1
4

1
5

1
6

1
8

1
9

2
0

2
1

2
2

2
3

2
4

2
5

2
6

2
7

2
8

1
7

2
9

3
0

3
1

3
2

(SEG)

(COM)

BONDING PAD DIAGRAM

81 80 79 78 77 76 75 74 73 72 71 70 69 68 67

25 26 27 28

29 30 31

35 36 37 38 39 40 41 42

(0,0)

Notes:

1. The substrate must be connected to V

W91570DN SERIES

Publication Release Date: May 1997

- 43 -

Revision A2

Bonding Pad List

PAD

NO.

PAD

NAME

PIN

NAME

PAD

NO.

PAD

NAME

PIN

NAME

SEG29<15>

-1205.80

1988.70

TESTL

1514.90

-2009.80

SEG30<15>

-1581.90

1871.70

SET

1589.40

-1805.40

SEG31<16>

-1581.90

1716.70

XT2

1589.40

-1638.20

SEG32<16>

-1581.90

1561.70

XT2

1589.40

-1488.20

TEST

-1581.90

1389.40

LCD

1589.40

-1333.60

K MUTE

-1581.90

1231.40

RTC2

1589.40

-1179.00

-1581.90

1073.20

1589.40

-996.00

TEST1

-1581.90

915.20

1589.40

-844.00

-1546.90

749.00

COM<1>

1589.40

-668.90

NC/ LOCK

-1581.90

579.10

COM<2>

1589.40

-513.90

B/M

-1581.90

421.10

COM<3>

1589.40

-358.90

DTMF

-1581.90

248.00

COM<4>

1589.40

-203.90

SET

RTC

-1581.90

67.00

SEG1<1>

1589.40

-48.90

-1581.90

-241.00

SEG2<1>

1589.40

106.10

H/P MUTE

-1581.90

-391.00

SEG3<2>

1589.40

261.10

T/P MUTE

-1581.90

-549.20

SEG4<2>

1589.40

416.10

HFO

-1581.90

-707.20

SEG5<3>

1589.40

571.10

DP / C10

-1581.90

-865.40

SEG6<3>

1589.40

726.10

MODE

-1581.90

-1023.40

SEG7<4>

1589.40

881.10

COL1

-1581.90

-1194.10

SEG8<4>

1589.40

1036.10

COL2

-1581.90

-1377.10

SEG9<5>

1589.40

1191.20

COL3

-1581.90

-1560.30

SEG10<5>

1589.40

1346.20

COL4

-1581.90

-1743.30

SEG11<6>

1589.40

1501.20

COL5

-1581.90

-1926.50

SEG12<6>

1589.40

1720.60

COL6

-1196.70

-2009.80

SEG13<7>

1407.40

1987.70

COL7

-1013.70

-2009.80

SEG14<7>

1158.00

1987.70

COL8

-830.50

-2009.80

SEG15<8>

1003.00

1987.70

COL9

-647.50

-2009.80

SEG16<8>

848.00

1987.70

ROW1

-464.30

-2009.80

SEG17<9>

693.00

1987.70

ROW2

-281.30

-2009.80

SEG18<9>

538.00

1987.70

ROW3

-98.10

-2009.80

SEG19<10>

383.00

1987.70

ROW4

84.90

-2009.80

SEG20<10>

228.00

1987.70

ROW5

268.10

-2009.80

SEG21<11>

72.90

1987.70

XT1

435.60

-2009.80

SEG22<11>

-82.10

1987.70

XT1

585.60

-2009.80

SEG23<12>

-237.10

1987.70

HKS

735.60

-2009.80

SEG24<12>

-392.10

1987.70

W91570DN SERIES

- 44 -

Bonding Pad List, continued

PAD

NO.

PAD

NAME

PIN

NAME

PAD

NO.

PAD

NAME

PIN

NAME

HFI

885.60

-2009.80

SEG25<13>

-547.10

1987.70

RTC1

1040.70

-2009.80

SEG26<13>

-702.10

1987.70

TEST2

1198.80

-2009.80

SEG27<14>

-857.10

1987.70

ARD

1356.80

-2009.80

SEG28<14>

-1012.10

1987.70

DISP

-1581.90

-91.00

Note: Pad 14 is for 12-digit LCD display bonding only.

W91570DN SERIES

Publication Release Date: May 1997

- 45 -

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: 852-27513100
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.

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: W91574DNF

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: W91574DNF