W91610 SERIES

TONE/PULSE DIALER WITH

TWO-STAGE REDIAL FUNCTION

Publication Release Date: July 1996

- 1 -

Revision A3

GENERAL DESCRIPTION

The W91610 series are Si-gate CMOS ICs that provide the signals needed for either pulse or tone
dialing.

FEATURES

DTMF/Pulse switchable dialer

32-digit redial memory

Two-stage redial function

Pulse-to-tone (P

T) keypad for long distance call operation

Easy operation with redial, flash, pause and P

T keypads

Pause, pulse-to-tone (P

T) can be stored as a digit in memory

Tone output duration: as long as key is depressed or 90 mS minimum

Minimum intertone pause: 90 mS

Flash time: 100 mS

Uses 4

5 keyboard

On-chip power-on reset

Uses 3.579545 MHz crystal or ceramic resonator

Packaged in 18-pin DIP

The different dialers in the W91610 series are shown in the following table:

TYPE NO.

DIALING RATE

PAUSE

B:M

FLASH

W91610

10 ppS

4 sec

2:1

100 mS

W91611

3:2

W91610 SERIES

- 2 -

PIN CONFIGURATION

MODE

DTMF

DP/C5

HKS

T/P MUTE

P MUTE

PIN DESCRIPTION

SYMBOL

PIN NO.

I/O

FUNCTION

Column-

Row Inputs

Keyboard inputs are designed for use with either a standard 4

keyboard or an inexpensive single contact (Form A) keyboard.

Electronic input from a

C can also be used.

Valid key entry is defined by a connection between a single row
and 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

The T/P MUTE is a conventional CMOS inverter output. It is low
during pulse and tone mode dialing sequence and flash break;
otherwise, it remains high.

MODE

Pulling the mode pin to V

place the dialer in tone mode.

Pull to V

or leave floating: Pulse mode (10 ppS, M/B = 2:3 or

1:2)

W91610 SERIES

Publication Release Date: July 1996

- 3 -

Revision A3

Pin Description, continued

SYMBOL

PIN NO.

I/O

FUNCTION

HKS

Hook switch input. Conventional CMOS input with an internal
protection diode and a pull-high resistor to V

HKS = V

: On-hook state. Chip in sleep mode, no operation.

HKS = V

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

During dialing, this input ignores HKS = V

for durations of less

than 150 mS (i.e., dialing is not terminated).

DP /C5

Open drain dialing pulse output (Figure 1).
Flash key causes DP /C5 to be active in both tone mode and pulse
mode.

DTMF

During pulse dialing, maintains low state at all times.
In tone mode, outputs a dual or single tone.

Detailed timing diagram for tone mode is shown in Figure 2(a, b).

OUTPUT FREQUENCY

Specified

Actual

Error %

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

, V

14, 6

Power input pins.

P MUTE

The P MUTE is a conventional CMOS inverter output. It is high
during pulse dialing sequence and flash break. Otherwise, it
remains low.

W91610 SERIES

- 4 -

BLOCK DIAGRAM

HKS

MODE

T/P MUTE

COLUMN

ROW

XT XT

P MUTE

DP/C5

(R1 to R4)

DTMF

SYSTEM CLOCK

GENERATOR

READ/WRITE

COUNTER

RAM

LOCATION

LATCH

ROW & COLUMN

PROGRAMMABLE

COUNTER

DATA LATCH

& DECODER

KEYBOARD

INTERFACE

(C1 to C4)

D/A

CONVERTER

PULSE

CONTROL

LOGIC

CONTROL

LOGIC

FUNCTIONAL DESCRIPTION

Keyboard Operation

DP / C5

F: Flash key

T: In pulse mode, this key works as Pulse

Tone key

T key can be stored as a digit in pulse or tone mode

R: Redial function key

P: Pause key

Normal Dialing

OFF HOOK

, ...,

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

W91610 SERIES

Publication Release Date: July 1996

- 5 -

Revision A3

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

3. Dialing mode is determined at the on/off hook transition.

Redialing

OFF HOOK

, ...,

, Busy,

Come

ON HOOK

OFF HOOK

The

key executes the redialing

function.

2. Redial content = D1, D2, ..., Dn

OFF HOOK

D1'

D2'

D3'

D4'

a. D1, D2, ..., Dn, D1', D2', P

T, D3', D4' will be dialed out.

b. Redial register is changed to D1, D2, ..., Dn, D1', D2', P

T, D3', D4'.

OFF

HOOK

(1st)

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

(2nd); P

T, D3', D4' will be dialed

out.

Access Pause

OFF HOOK

, ...,

1. The pause function can be stored in memory.

2. The pause function may be executed in normal dialing, redialing, or memory dialing (4.0
sec/pause).

3. The pause function can be stored as the first digit in memory.

4. The pause time depends on the number of times the P key is depressed. For example, if the

sequence 1, 2, P, P, 4, 5, 6 is keyed in, then the pause time is 8 seconds.

5. The pause function timing diagram is shown in Figure 3.

Pulse-to-tone (P

OFF HOOK

, ...,

D1'

D2'

, ...,

Dn'

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

D1, D2, ..., Dn, no pause, D1', D2', ..., Dn'
(Pulse)

(Tone)

In this case, the device can be reset to pulse mode only by going on-hook, because tone mode
remains enabled after the digits have been dialed out.

W91610 SERIES

- 6 -

b. If the mode switch is set to tone mode, then the output signal will be as follows:

D1, D2, ..., Dn, no pause, D1', D2', ..., Dn'
(Tone)

(Tone)

c. The P

T key may be pressed before the first sequence is dialed out completely.

OFF HOOK

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

D1, D2, ..., Dn
(Pulse)

b. In the first redial operation, only the digits before the tone key are dialed out.

(2nd)

D1', D2', ..., Dn' are dialed out.
(Tone)

c. In the second redial operation, the digits after the tone key are dialed out.

Flash

OFF HOOK

1.
The

key may be pressed before digits D1, D2, D3 are sent completely. Digits D4, D5, D6 may

be pressed during the 100 mS. flash period.

2. The flash key cannot be stored as a digit in memory or in the redial register.

3. The content of the redial register is D1, D2, D3, D4, D5, D6.

The

key is not stored in the

redial

4. The flash does not have first priority among the keyboard functions.

5. The flash pause time is 800 mS, so there is a pause of 800 mS between the flash and the next digit

dialed (see Figure 5).

6. The dialer will not return to the initial state after the flash break time has elapsed.

7. The flash function timing diagram is shown in Figure 5.

ABSOLUTE 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

W91610 SERIES

Publication Release Date: July 1996

- 7 -

Revision A3

Power Dissipation

120

Operating Temperature

OPR

-20 to +70

Storage Temperature

STG

-55 to +150

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

DC CHARACTERISTICS

OSC.

= 3.58 MHz, Ta = 25

C, all outputs unloaded)

PARAMETER

SYM.

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Operating Voltage

2.0

5.5

Operating Current

Tone, V

= 2.5V

0.30

0.50

Pulse, V

= 2.5V

0.15

0.30

Standby Current

HKS = 0, No load & No
key entry

Memory Retention
Current

HKS = 1, V

= 1.0V

0.2

DTMF Output Voltage

Row group, R

= 5 K

130

150

170

mVrms

Pre-emphasis

Col/Row,
V

= 2.0 to 5.5V

DTMF Distortion

THD

= 5 K

= 2.0 to 5.5V

-30

-23

DTMF Output DC Level

TDC

= 5 K

= 2.0 to 5.5V

1.0

3.0

DTMF Output Sink
Current

= 0.5V

= 2.5V

0.2

DP /C5 Output Sink
Current

= 0.5V

= 2.5V

0.5

P MUTE & T/P MUTE
Output Drive Current

= 2.0V

= 2.5V

0.2

P MUTE & T/P MUTE
Output Sink Current

= 0.5V, V

2.5V

0.5

Keypad Input Drive
Current

= 0V, V

= 2.5V

Keypad Input Sink
Current

= 2.5V, V

= 2.5V

200

400

Keypad Resistance

5.0

HKS Input Pull High
Resistance

300

W91610 SERIES

- 8 -

Input Voltage Low Level

Pins 1, 2, 3, 4, 10, 13,

0.2

Input Voltage High Level

15, 16, 17, 18

0.8

AC CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Keypad Active in Debounce

KID

Key Release Debounce

KRD

Pre-digit Pause

PDP1

Mode Pin =

Floating

33.3

10 ppS

Mode Pin = V

Interdigit Pause (Auto Dialing)

IDP

10 ppS

800

Make/Break Ratio

M/B

M/B = 1:2

33:67

M/B = 2:3

40:60

DTMF Output Duration

Auto Dialing

Intertone Pause

ITP

Flash Break Time

100

Flash Pause

800

Pause Time

4.0

Pre-tone Mute

PTM

Notes

1. Crystal parameters suggested for proper operation are R

100

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

OSC.

= 3.579545 MHz

0.02%.

2. Crystal oscillator accuracy directly affects these times.

W91610 SERIES

Publication Release Date: July 1996

- 9 -

Revision A3

TIMING WAVEFORMS

PDP

IDP

KID

PDP

KID

HKS

KEY IN

DP/C5

T/P MUTE

P MUTE

DTMF

OSC.

LOW

OSCILLATION

NORMAL DIALING

AUTO DIALING

Figure 1. Pulse Mode Timing Diagram

Timing Waveforms, continued

KID

KRD

ITP

KRD

ITP

PTM

HKS

KEY IN

DTMF

T/P MUTE

DP/C5

P MUTE

OSC.

HIGH

LOW

OSCILLATION

KID

ITP

Figure 2(a). Tone Mode Normal Dialing Timing Diagram

W91610 SERIES

Publication Release Date: July 1996

- 11 -

Revision A3

Timing Waveforms, continued

B M

KID

PDP

IDP

PDP

IDP

LOW

OSCILLATION

HKS

KEY IN

DP/C5

T/P MUTE

DTMF

P MUTE

OSC.

Figure 3. Pause Function Timing Diagram

T/P MUTE

M B

KID

PDP

IDP

ITP

HKS

KEY IN

DP/C5

DTMF

P MUTE

OSC.

OSCILLATION

B M

Figure 4. P

T Operation Timing Diagram in Normal Dialing

W91610 SERIES

- 12 -

Timing Waveforms, continued

KID

LOW

OSCILLATION

HKS

KEY IN

DP/C5

T/P MUTE

P MUTE

DTMF

OSC.

LOW

IDP

Figure 5. Flash Operation Timing Diagram

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.

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: W91610

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: W91610