Datasheet W91611, W91610 Datasheet (Winbond Electronics)

W91610 SERIES

TONE/PULSE DIALER WITH

TWO-STAGE REDIAL FUNCTION

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

Publication Release Date: July 1996

- 1 - Revision A3

PIN CONFIGURATION

XT

MUTE

MUTE

W91610 SERIES

1 18 R4C1

C2

C3

C4

P MUTE

V

XT

XT

T/P MUTE

SS

2

3

4

5

6

7

8

9 10

17

16

15

14

13

12 DTMF

11

R3

R2

R1

V

DD

MODE

DP/C5

HKS

PIN DESCRIPTION

SYMBOL PIN NO. I/O FUNCTION

Column-

Row Inputs

1−4

&

15−18

I

Keyboard inputs are designed for use with either a standard 4 × 5
keyboard or an inexpensive single contact (Form A) keyboard.

Electronic input from a µC can also be used.
Valid key entry is defined by a connection between a single row

and a single column.

XT,

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

3.579545 MHz crystal or ceramic resonator.

T/P

9 O

The T/P

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

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

Pull to VDD or leave floating: Pulse mode (10 ppS, M/B = 2:3 or
1:2)

- 2 -

Pin Description, continued

HKS

HKS

HKS

HKS

DP/C5

SYMBOL PIN NO. I/O FUNCTION

10 I Hook switch input. Conventional CMOS input with an internal

protection diode and a pull-high resistor to VDD.

= VDD: On-hook state. Chip in sleep mode, no operation.
= VSS: Off-hook state. Chip enabled for normal operation.

W91610 SERIES

During dialing, this input ignores

= VDD for durations of less

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

11 O Open drain dialing pulse output (Figure 1).

Flash key causes DP/C5 to be active in both tone mode and pulse
mode.

DTMF 12 O 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 %

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

VDD, VSS 14, 6 I Power input pins.

P MUTE 5 O The P MUTE is a conventional CMOS inverter output. It is high

during pulse dialing sequence and flash break. Otherwise, it
remains low.

Publication Release Date: July 1996

- 3 - Revision A3

BLOCK DIAGRAM

DP/C5

W91610 SERIES

XT

XT

ROW

(R1 to R4)

KEYBOARD
INTERFACE

COLUMN

(C1 to C4)

DTMF

D/A

CONVERTER

FUNCTIONAL DESCRIPTION

Keyboard Operation

HKS

MODE

READ/WRITE
COUNTER

RAM

LOCATION
LATCH

ROW & COLUMN
PROGRAMMABLE
COUNTER

SYSTEM CLOCK
GENERATOR

CONTROL

LOGIC

PULSE
CONTROL
LOGIC

DATA LATCH
& DECODER

T/P MUTE

P MUTE

DP/C5

C1 C2 C3 C4

1 2 3

P→T
4 5 6 F P R2
7 8 9 R3

* 0 # R R4

• F: Flash key

• P→T: In pulse mode, this key works as Pulse→Tone key

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

• R: Redial function key

• P: Pause key

Normal Dialing

OFF HOOK , D1 , D2 , ..., Dn

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

- 4 -

R1

W91610 SERIES

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

1. OFF HOOK , D1 , D2 , ..., Dn , Busy,
Come

The R key executes the redialing

function.

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

OFF HOOK , R , D1' , D2' ,

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

c.

HOOK

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

R

(2nd); P→T, D3', D4' will be dialed

, R (1st)

out.

P→T

, D3' , D4'

ON HOOK , OFF HOOK , R

Access Pause

OFF HOOK , D1 , D2 , P , D3 , ..., Dn

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→T)

1. 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.

P→T

- 5 - Revision A3

, D1' , D2' , ..., Dn'

Publication Release Date: July 1996

W91610 SERIES

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.

2. OFF HOOK , R

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.

R (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 , D1 , D2 , D3 , F , D4 , D5 , D6

1.

The
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.

register.

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

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.

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

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

dialed (see Figure 5).

F key is not stored in the

redial

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL RATING UNIT

DC Supply Voltage VDD−VSS -0.3 to +7.0 V

VIL VSS -0.3 V

Input/Output Voltage VIH VDD +0.3 V

VOL VSS -0.3 V

VOH VDD +0.3 V

- 6 -

W91610 SERIES

HKS

HKS

DP/C5

MUTE

MUTE

HKS

Power Dissipation PD 120 mW
Operating Temperature TOPR -20 to +70
Storage Temperature TSTG -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

(FOSC. = 3.58 MHz, Ta = 25° C, all outputs unloaded)

PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT

Operating Voltage VDD - 2.0 - 5.5 V
Operating Current IOP Tone, VDD = 2.5V - 0.30 0.50 mA

Pulse, VDD = 2.5V - 0.15 0.30

Standby Current ISB

Memory Retention
Current

DTMF Output Voltage VTO
Pre-emphasis Col/Row,

DTMF Distortion THD

DTMF Output DC Level VTDC

DTMF Output Sink
Current

Output Sink

Current
P MUTE & T/P

Output Drive Current
P MUTE & T/P

Output Sink Current
Keypad Input Drive

Current
Keypad Input Sink

Current
Keypad Resistance RK - - - 5.0

Input Pull High

Resistance

IMR

ITL VTO = 0.5V

IPL VPO = 0.5V

IMH VMO = 2.0V

IML VMO = 0.5V, VDD =

IKD VI = 0V, VDD = 2.5V 4 - -

IKS VI = 2.5V, VDD = 2.5V 200 400 -

RHK - - 300 -

= 0, No load & No

key entry

= 1, VDD = 1.0V

Row group, RL = 5 KΩ

VDD = 2.0 to 5.5V
RL = 5 KΩ

VDD = 2.0 to 5.5V
RL = 5 KΩ

VDD = 2.0 to 5.5V

VDD = 2.5V

VDD = 2.5V

VDD = 2.5V

2.5V

- - 15

- - 0.2

130 150 170 mVrms

1 2 3 dB

- -30 -23 dB

1.0 - 3.0 V

0.2 - - mA

0.5 - - mA

0.2 - - mA

0.5 - - mA

°C
°C

µA

µA

µA

µA

KΩ
KΩ

Publication Release Date: July 1996

- 7 - Revision A3

W91610 SERIES

Input Voltage Low Level VIL Pins 1, 2, 3, 4, 10, 13, 0 - 0.2

VDD

Input Voltage High Level VIH 15, 16, 17, 18 0.8

VDD

- VDD V

AC CHARACTERISTICS

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT

Keypad Active in Debounce TKID - - 20 - mS
Key Release Debounce TKRD - - 20 - mS
Pre-digit Pause TPDP1 Mode Pin =

Floating

10 ppS Mode Pin = VDD - 40 -
Interdigit Pause (Auto Dialing) TIDP 10 ppS - 800 - mS
Make/Break Ratio M/B M/B = 1:2 - 33:67 - %

M/B = 2:3 - 40:60 ­DTMF Output Duration TTD Auto Dialing - 90 - mS
Intertone Pause TITP - 90 - mS
Flash Break Time TFB - - 100 - mS
Flash Pause TFP - - 800 - mS
Pause Time TP - - 4.0 - S
Pre-tone Mute TPTM - - 70 - mS

- 33.3 - mS

V

Notes:

1. Crystal parameters suggested for proper operation are RS < 100 Ω, Lm = 96 mH, Cm = 0.02 pF, Cn = 5 pF, Cl = 18 pF,
FOSC. = 3.579545 MHz ±0.02%.

2. Crystal oscillator accuracy directly affects these times.

- 8 -

TIMING WAVEFORMS

HKS

W91610 SERIES

KEY IN

DP/C5

T/P MUTE

P MUTE

Timing Waveforms, continued

KEY IN

DTMF

DTMF

OSC.

HKS

3 2 R

T

KID

T

TPDP

IDP

PDPT

T

IDP

B

T

M

T

KID

T

PDP

T

LOW

OSCILLATION

OSCILLATION

NORMAL DIALING AUTO DIALING

Figure 1. Pulse Mode Timing Diagram

KRD

T

T

KID

PTM

T T

T

T

TD

KRD

ITP

T

KID

T

PTM

ITP

T

PDP

T

T

IDP

T

IDP

KRD

T

ITP

T

T/P MUTE

DP/C5

P MUTE

OSC.

HIGH

LOW

OSCILLATION OSCILLATION

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

Publication Release Date: July 1996

- 9 - Revision A3

HKS

W91610 SERIES

KEY IN

DTMF

T/P MUTE

DP/C5

P MUTE

OSC.

R

KID

T

PTM

T

ITP

T

T

TD

HIGH

LOW

OSCILLATION

Figure 2(b). Tone Mode Auto Dialing Timing Diagram

ITP

T

- 10 -

Timing Waveforms, continued

W91610 SERIES

HKS

KEY IN

DP/C5

T/P MUTE

DTMF

P MUTE

OSC.

HKS

KEY IN

DP/C5

IDP

T

2

M

B

OSCILLATION

IDPT

2 P4

KID

T

M

B

PDP

T

LOW

Figure 3. Pause Function Timing Diagram

P

4

B M

2

T

KID

PDP

T

T

8

M B

IDP

IDP

T

T

IDPT

PDPT

T

P

T/P MUTE

DTMF

P MUTE

OSC.

T

ITP

OSCILLATION

Figure 4. P→T Operation Timing Diagram in Normal Dialing

Publication Release Date: July 1996

- 11 - Revision A3

Timing Waveforms, continued

W91610 SERIES

HKS

KEY IN

DP/C5

T/P MUTE

P MUTE

DTMF

OSC.

LOW

3

TFP

T

FP

LOW

F

OSCILLATION

F

KID

T

FB T

T

Figure 5. Flash Operation Timing Diagram

IDP

Headquarters

No. 4, Creation Rd. III,
Science-Based Industrial Park,
Hsinchu, Taiwan
TEL: [phone]
FAX: [phone]
http://www.winbond.com.tw/
Voice & Fax-on-demand: 886-2-7197006

Winbond Electronics (H.K.) Ltd.

Rm. 803, World Trade Square, Tower II,
123 Hoi Bun Rd., Kwun Tong,
Kowloon, Hong Kong
TEL: [phone]
FAX: [phone]

Taipei Office

11F, No. 115, Sec. 3, Min-Sheng East Rd.,
Taipei, Taiwan
TEL: [phone]
FAX: [phone]

Note: All data and specifications are subject to change without notice.

- 12 -

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: [phone]

FAX: [phone]