Datasheet W91580C, W91580B, W91580A, W91580 Datasheet (Winbond Electronics)

Page 1

W91580 SERIES

24-MEMORY TONE/PULSE SWITCHABLE DIALER

WITH HANDFREE AND HOLD FUNCTIONS

GENERAL DESCRIPTION

The W91580 series dialers are Si-gate CMOS IC tone/pulse switchable dialers containing a 24channel automatic dialing memory, including a 16-digit × 3 emergency dialing memory, a 16-digit × 20 channel repertory memory that provides one-touch and three-touch dialing, and a 32-digit mercury memory. These dialers also provide flash, clear, hold, and one-key redial functions.

FEATURES

• DTMF/Pulse switchable dialer

• 31/32-digit LNB (last number buffer) memory (tone/pulse mode)

• 31/32-digit mercury memory (tone/pulse mode)

• 15/16-digit × 3 one-touch direct repertory memory (tone/pulse mode)

• 15/16-digit × 20 direct or indirect repertory memory (tone/pulse mode)

• Uses 9 × 5 keyboard

• Flash time: 98 mS, 305 mS, or 600 mS (selectable by keypad option)

• Pause time: 3.6 sec.

• Pause and P→T (pulse-to-tone) can be stored as a digit in memory

• Minimum tone output duration: 100 mS

• Minimum intertone pause: 100 mS

• On-chip power-on reset

• Uses 3.579545 MHz crystal or ceramic resonator

• Packaged in 22, 24, or 28-pin plastic DIP

• The different dialers in the W91580 series are shown in the following table:

TYPE NO. PULSE

(ppS)

MEMORY MERCURY

MEMORY

HOLD HANDFREE PACKAGE

W91580 10 20 - - - 22 W91580A 10 20 - - Yes 24 W91580B 10/20 24 Yes Yes Yes 28 W91580C 10/20 24 Save Yes Yes 28

Publication Release Date: Auguest 1995

- 1 - Revision A3

Page 2

PIN CONFIGURATIONS

W91580

W91580A

W91580B/C

MUTE

W91580 SERIES

T/P MUTE

C6C76

HFI

T/P MUTE

C6C76

5 18

9 14

11 12

22C1

MODE

DTMF

DP/C9

HKS

T/P MUTE

C6C76

HFI

5 20

9 16

24C1

MODE

DTMF

DP/C9

HKS

HFO

PIN DESCRIPTION

SYMBOL 22-PIN 24-PIN 28-PIN I/O FUNCTION

5 24

9 20

12 17

14 1516HFO

28C1

HPM MUTE

DRS

MODE

DTMF

DP/C9

HKS13

Column-

Row

Inputs

XT,

T/P

HPM

MUTE

1−7

18−22

1−7

20−24

1−8

24−28

I The keyboard input may be used with either the

standard 9 × 5 keyboard or an inexpensive single contact (form A) keyboard. Electronic input from a µC can also be used. A valid key entry is defined by a single row being connected to a single column.

9, 10 9, 10 11, 12 I, O A built-in inverter provides oscillation with an

inexpensive 3.579545 MHz crystal or ceramic resonator.

11 11 13 O

The T/P

is a conventional CMOS N-channel open drain output. The output transistor is switched on during pulse and tone mode dialing sequence and flash break. Otherwise, it is switched off.

- - 23 O The HPM MUTE is a conventional inverter output. During pulse dialing, flash, hold, and mercury mute functions, this pin will output an active high. It remains in a low state at all other times.

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W91580 SERIES

HKS

DP/C9

Pin Description, continued

SYMBOL 22-PIN 24-PIN 28-PIN I/O FUNCTION

MODE 15 17 19 I Pulling mode pin to VSS places the dialer in tone

mode. Pulling mode pin to VDD places the dialer in pulse mode (10 ppS, M/B = 2:3). Leaving mode pin floating places the dialer in pulse mode (10 ppS, M/B = 1:2).

12 14 16 I Hook switch input.

= 1: On-hook state. Chip in sleep mode, no

operation.

= 0: Off-hook state. Chip enabled for normal

operation.

pin is pulled to VDD by internal resistor.

13 15 17 O N-channel open drain dialing pulse output

(see Figure 1). Flash key causes DP to go active when in pulse

mode and tone mode.

NC 17 19 22 - No connection.

DTMF 14 16 18 O In pulse mode, remains in 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.

OUTPUT FREQUENCY

Specified Actual Error %

R1 R2

R3 R4

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 16, 8 18, 8 20, 10 I Power input pins.

Publication Release Date: Auguest 1995

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W91580 SERIES

HFI

Pin Description, continued

SYMBOL 22-PIN 24-PIN 28-PIN I/O FUNCTION

, HFO

- 12, 13 14, 15 I, O

Handfree control pins. A low pulse on the input pin toggles the handfree control state. The status of the handfree control state is described by the following table:

CURRENT STATE

Hook SW.

On Hook Off Hook

Off Hook

HFO

Low High High

Low

High

Off Hook On Hook

On Hook

Input

HFI

NEXT STATE

HFO High

Low Low Low

Low

High

Dialing

Yes

pin is pulled to VDD by internal resistor.

KT - - 9 O Keytone signal output. A keytone will be generated

whenever a valid key is pressed. Frequency is 600 Hz and duration is 35 mS.

DRS - - 21 I Dial rate selection.

This pin is pulled to VDD by an internal resistor.

- 4 -

DRS

MODE

Floating

TONE/PULSE

Pulse Pulse Tone Pulse Pulse

Tone

DIAL

RATE

10 ppS 10 ppS

10 ppS 20 ppS

M/B

2:3 1:2

1:2 1:2

Page 5

BLOCK DIAGRAM

C1C2C3C4C5C6C7

DP/C9

W91580 SERIES

ROW

(R1 to R5)

COLUMN

(C1 to C8)

DTMF

KEYBOARD INTERFACE

D/A CONVERTER

FUNCTIONAL DESCRIPTION

Keyboard Operation

HKS

MODE

READ/WRITE

COUNTER

RAM

LOCATION

LATCH

ROW & COLUMN

PROGRAMMABLE

COUNTER

SYSTEM CLOCK

GENERATOR

HFI

CONTROL

LOGIC

DRS

PULSE

CONTROL

LOGIC

DATA LATCH

& DECODER

T/P MUTE

HPM MUTE HFO

DP/C9

1 2 3 S M00 M05 M10 M15 EM1 R1 4 5 6 MEMO M01 M06 M11 M16 EM2 R2

7 8 9 CLR M02 M07 M12 M17 EM3 R3 */T 0 # R/P M03 M08 M13 M18 H R4 F1 F2 F3 R M04 M09 M14 M19 *MER R5

* MER is for W91580B only; Fin W91580C this key performs Save function.

Publication Release Date: Auguest 1995

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Page 6

• S: Store function key

DP/C9

HFI

• F1, F2, F3: Flash keys

• R: One-key redial

• H: Hold function key

W91580 SERIES

•

• M0j: Direct or indirect (MEMO + M0j = M1j) repertory memory

• M1j: Direct repertory dialing

• EMi: One-touch memory for emergency call

• */T: * & P→T

• CLR: Clear key

• R/P: Redial and pause function key

• MER: One-touch memory for mercury code dialing

• MEMO: Indirect repertory dialing function key

Note: Dn = 0 to 9, *, #, Mij = M00 to M19 (i = 0, 1; j = 0 to 9).

: This key is connected to pin DP/C9 via a bipolar switching transistor and a diode.

Normal Dialing

OFF HOOK (or ON HOOK &

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

2. Dialing length is unlimited, but redial is inhibited if length exceeds 32 digits.

), D1 , D2

, …,

Redialing

1. OFF HOOK , D1 , D2 (or ON HOOK &

, …,

Dn BUSY, Come ON HOOK , OFF HOOK

), R/P

or ON HOOK &

, D1 , D2

, …,

Dn , BUSY,

Come

, R/P

The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it will execute the pause function.

2. OFF HOOK (or ON HOOK &

), D1 , D2

, …,

Dn , R

a. The one-key redial function timing diagram is shown in Figure 4. b. If dialing

D1 to Dn is completed, pressing the R key will cause the pulse output

pin to go low for 2.2 seconds. Break time and a 600 mS pause will automatically be added.

c. If the R key is pressed before the pulses for the number dialed out are completed, it will be

ignored.

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W91580 SERIES

HFI

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

function key.

HFI

Number Store

1. OFF HOOK (or ON HOOK & S , Mij , EMi or MER

R/P and */T keys can be stored as a digit in memory. In store mode R/P is the pause

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

), S , D1 , D2

, …,

2. S , D1 , D2

D1, D2, ..., Dn will be stored in memory location Mij and will not be dialed out.

3. S , D1 , D2

a. D1, D2, ..., Dn will be stored in memory location M10 to M19 and will not be dialed out. b. MEMO + M0j = M1j.

4. OFF HOOK (or ON HOOK &

( or Ln ),

a. D1, D2, ..., Dn will be stored in memory location and will be dialed out. b. The S key must be pressed after completion of the dialing sequence.

5. D1 , D2

D1, D2, ..., Dn will be stored in memory location Mij and will be dialed out.

6. D1 , D2

a. D1, D2, ..., Dn will be stored in memory location M10 to M19 and will be dialed out. b. MEMO + M0j = M1j.

ON HOOK

, …,

Dn , S , S , i , j

Dn , S , S , MEMO , M0j

Dn , S , i , j

Dn , S , MEMO , M0j

), D1 , D2

, …,

Dn , S , S , Mn

Repertory Dialing

1. OFF HOOK (or ON HOOK &

2. OFF HOOK (or ON HOOK &

3. OFF HOOK (or ON HOOK &

), Mij or EMi or MER

), MEMO , i , j ), MEMO , M0j

Access Pause

- 7 - Revision A3

Publication Release Date: Auguest 1995

Page 8

W91580 SERIES

HFI

OFF HOOK (or ON HOOK &

1. The pause function can be stored in memory.

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

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

), D1 , D2 , R/P , D3

, …,

Pulse-to-Tone (*/ T)

OFF HOOK (or ON HOOK & */T , D1' , D2'

1. If the mode switch is set to pulse mode, then the output signal will be: D1, D2, ..., Dn, Pause (3.6s) , 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) (Tone)

3. The dialer remains in tone mode when the digits have been dialed out and can be reset to pulse mode only by going on-hook.

4. The P→T function timing diagram is shown in Figure 6.

5. */ T key can be stored as a digit in memory

, …,

Dn'

), D1 , D2

, …,

Dn ,

Flash (F = F1, F2, F3)

OFF HOOK (or ON HOOK &

1. Flash key cannot be stored as a digit in memory, and it has first priority among keyboard functions.

2. The system will return to the initial state after the break time is finished.

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

), F

Clear key

1. CLR , R/P (or R )

Redial and one-key redial buffer will be cleared.

2. CLR , Mij

Location Mij buffer content will be cleared.

3. CLR , i , j

Location Mij buffer content will be cleared.

4. CLR , MEMO , M0j

Location M1j buffer content will be cleared.

Save

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W91580 SERIES

HFI

1. OFF HOOK (or ON HOOK &

), D1, D2, …, Dn

D1, D2, …, Dn will be stored in save memory and dialed out.

2. OFF HOOK (or ON HOOK &

), S

, D1, D2, …, Dn

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

CHAIN DIALING

Relationship between the memory and the chain dialing buffer:

Memory

Digit Location

. . .

. .

M00

M01

. . .

M18

M19

M20

EM1

EM2

Chain Dialing Buffer

Section 1

Section 2

Section 3

Section 4

S , S , SAVE

S , SAVE

EM3

Normal Dialing

The chain dialing buffer may be divided into four sections, allowing up to four numbers to be dialed out in sequence. For example, if the user enters M01, M03, EM1, and normal dialing (manual dialing), the content of sections 1 to 4 will be M01, M03, EM1, and normal dialing (manual dialing). When numbers are entered into the chain dialing buffer, there is no need to wait until the previous dialing sequence has been completed. Numbers may be entered directly, one after the other, even while previous numbers are being dialed out.

1. Manual Dialing + Repertory Dialing Redial buffer content = Manual dialing + Repertory dialing.

2. Repertory Dialing + Manual Dialing Redial buffer content = Repertory dialing + Manual dialing.

Publication Release Date: Auguest 1995

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W91580 SERIES

3. Repertory Dialing + Repertory Dialing Redial buffer content = Repertory dialing + Repertory dialing.

4. Redialing + Manual Dialing Redial buffer content = Redialing + Manual dialing. The primary redial content may not be manual dialing. Otherwise, the last redial content will be

overwritten.

5. Redialing + Repertory Dialing Redial buffer content = Redialing + Repertory dialing. Redialing is valid only as the first key-in after off-hook or after the handfree dialing function is

toggled on. The second sequence should not be performed until the first sequence is completely dialed out.

6. Manual Dialing + One Key Redialing Redial buffer content = Manual dialing. The one-key redial may only be used after dialing out of a manual dialing sequence is completed.

7. Repertory Dialing 1 (M1) + One Key Redialing +

Repertory Dialing 2 (M2) + One Key Redialing or Repertory Dialing 1 (M1) + One Key Redialing + Repertory Dialing 2 (M2) ,

ON HOOK

OFF HOOK

, Redialing M1 and M2 represent any of the repertory dialing memories. The first redialing will dial out M1; the second will dial out M1, M2. If dialing out of the repertory dialing memories has not been completed, the one-key redial key will

be ignored. Dialing of the second repertory dialing memory (M2) should not be performed until the one-key

redialing operation is completed.

Notes:

1. Chain dialing (cascaded dialing) allows for memory or manual dialing while a previous dialing sequence is still being dialed out.

2. More than one sequence of manual dialing is not permitted.

Entering more than one manual dialing sequence will inhibit redialing. Chain dialing of more than four sections is not permitted.

Manual Dialing + M1 + Manual Dialing (two sections of manual dialing)

3. If more than four sections are entered, all sections after the fourth section will be ignored and redialing will be inhibited.

Manual Dialing + M1 + M2 + M3 + M4 (over 4 sections, ignore M4 and inhibit redial)

4. There is a 2.0 sec. inter-chain dialing pause for cascaded dialing.

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W91580 SERIES

MERCURY DIALING

1. Up to 32 digits may be stored.

2. Mercury dialing is activate only as the first key-in after off-hook or when handfree dialing is

activated.

3. The timing diagram for the mercury memory function is shown below.

KEY IN

T/P MUTE

DTMF

HPM MUTE

OSC.

MER

IDP

OSCILLATION

Mercury Function Timing Diagram

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL RATING UNIT

DC Supply Voltage VDD−VSS -0.3 to +7.0 V Input/Output Voltage VIL VSS -0.3 V

VIH VDD +0.3 V

VOL VSS -0.3 V

VOH VDD +0.3 V Power Dissipation PD 120 mW Operating Temperature TOPR -20 to +70 Storage Temprature TSTG -55 to +125

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

°C °C

Publication Release Date: Auguest 1995

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W91580 SERIES

HKS

MUTE

HKS

DC CHARACTERISTICS

(VDD−VSS = 2.5V, 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 - 0.3 0.5 mA

Pulse - 0.15 0.3

Standby Current ISB

Memory Retention Current IMR DTMF Output Voltage VTO Row group, RL = 5K 130 150 170 Vrms

Pre-emphasis - Col/Row, VDD = 2.0 to 5.5V 1 2 3 dB DTMF Distortion THD DTMF Output DC Level VTDC DTMF Output Sink Current ITL VTO = 0.5V 0.2 - - mA

Output Sink Current

T/P Current

HPM MUTE Output Sink Current

HPM MUTE Output Drive Current

Key Tone Output Current IKTH VKTH = 2.0V 0.5 - - mA

Output Sink

I/P Pull High Resistor

IPL VPO = 0.5V 0.5 - - mA

IML VMO = 0.5V 0.5 - - mA

IHPML VTO = 0.5V 0.5 - - mA

IHPMH VTH = 2.0V 0.5 - - mA

RKH - 300 -

= 0,

No load & No key entry

= 1, VDD = 1.0V

RL = 5 KΩ, VDD = 2.0 to 5.5V RL = 5 KΩ, VDD = 2.0 to 5.5V

- - 15

- - 0.2

- -30 -23 dB

1.0 - 3.0 V

µA

KΩ

IKTL VKTH = 0.5V 0.5 - -

HFO Drive/Sink Current IHFH VHFH = 2.0V 0.5 - - mA

IHFL VHFL = 0.5V 0.5 - Keypad Input Drive Current IKD VI = 0V 30 - Keypad Input Sink Current IKS VI = 2.5V 200 400 Keypad Resistance - - 5.0

AC CHARACTERISTICS

- 12 -

µA µA

KΩ

Page 13

W91580 SERIES

PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT

Keypad Active in Debounce TKID - - 20 - mS Key Release Debounce TKRD - - 20 - mS Pre-digit Pause

Pre-digit Pause

Interdigit Pause (Auto dialing) TIDP 10 ppS - 800 - mS

Make/Break Ratio M/B MODE Pin = VDD - 40:60 - %

Tone Output Duration TTD Auto Dialing - 100 - mS

TPDP1 MODE Pin = VDD - 40 - mS

10 ppS MODE Pin = Floating - 33.3 -

TPDP2 MODE Pin = VDD - 20 - mS

20 ppS MODE Pin = Floating - 16.7 -

20 ppS - 500 -

MODE Pin = Floating - 33:67 -

Intertone Pause TITP Auto Dialing - 100 - mS Flash Break Time TFB - - 98 - mS

- 305 -

- 600 Pause Time TP - - 3.6 - S Key Tone Frequency FKT - - 600 - Hz Key Tone Duration TKTD - - 35 - mS One-key Redialing Pause Time TRP - - 600 - mS One-key Redialing Break Time TRB - - 2.2 - S

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.

Publication Release Date: Auguest 1995

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Page 14

TIMING WAVEFORMS

HKS

W91580 SERIES

KEY IN

T/P MUTE

HPM MUTE

DTMF

OSC.

HKS

KEY IN

DTMF

OSCILLATION

TID

LOW

Figure 1. Pulse Mode Diagram (Normal Dialing)

KRD

KID

TITP

ITP

TID

TPD

OSCILLATION

KID

KRD

ITP

T/P MUTE

HPM MUTE

OSC.

LOW

HIGH

OSCILLATION

Figure 2. Tone Mode Diagram (Normal Dialing)

- 14 -

OSCILLATION

Page 15

Timing Waveforms, continued

W91580 SERIES

HKS

OFF HOOK

HFI

H KEY

HFO

HPM MUTE

CHIP ENBLE

Note: H KEY cannot be enabled when chip is disabled.

HKS

ON HOOK

HIGHT/P MUTE

LOW

Figure 3(a).

OFF HOOK

HFI

H KEY

HFO

T/P MUTE

HPM MUTE

CHIP ENBLE

HIGH

Figure 3(b).

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

will go high and previous inputs will be ignored.

Publication Release Date: Auguest 1995

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Page 16

Timing Waveforms, continued

HKS

W91580 SERIES

HKS

HFI

H KEY

HFO

T/P MUTE

HPM MUTE

CHIP ENBLE

Note: Changing the state of the

HKS

ON HOOK

HIGH

Figure 3(c).

signal from high to low will initialize the HFO and HPM MUTE signals.

LOW

KEY IN

T/P MUTE

HPM MUTE

DTMF

OSC.

KID

TRB

OSCILLATION

IDP

PDP

LOW

Figure 4. Pulse Mode One-key Redialing Timing Diagram (when not first key)

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Page 17

Timing Waveforms, continued

W91580 SERIES

HKS

KEY IN

T/P MUTE

HPM MUTE

DTMF

OSC.

HKS

KEY IN

TKID

PDP

2 R/P

TIDP

LOW

OSCILLATION

Figure 5. Pause Function Timing Diagram

TIDP

*/T

TIDP

TKID

PDP

IDP

PDP

T/P MUTE

HPM MUTE

DTMF

OSC.

OSCILLATION

Figure 6. Pulse-to-Tone Function Timing Diagram

Publication Release Date: Auguest 1995

- 17 - Revision A3

TIDP

Page 18

Timing Waveforms, continued

W91580 SERIES

HKS

KEY IN

T/P MUTE

HPM MUTE

DTMF

OSC.

LOW

TKID

TFB

LOW

OSCILLATION

Figure 7. Flash Operation Timing Diagram

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W91580 SERIES

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

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

Taipei Office

11F, No. 115, Sec. 3, Min-Sheng East Rd., Taipei, Taiwan TEL: 886-2-7190505 FAX: 886-2-7197502

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

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

Publication Release Date: Auguest 1995

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