Datasheet W9145L, W9145AL, W9145A, W9145 Datasheet (Winbond Electronics)

Page 1

W9145 SERIES

15-MEMORY TONE/PULSE DIALER WITH LOCK

AND HANDFREE FUNCTIONS

GENERAL DESCRIPTION

The W9145 series are Si-gate CMOS ICs that provide the necessary signals for either pulse or tone dialing. The W9145 series feature a key tone function, handfree dialing, a lock function, thirteen 16digit automatic dialing memories, and two by 32-digit for redial and save memory.

FEATURES

• DTMF/Pulse switchable dialer

• Two by 32 digits for redial and save memory

• Three by 16 digits for one-touch direct repertory

• Ten by 16 digits for two-touch indirect repertory

• Unlimited dialing length (redial inhibited if dialing length exceeds 32 digits in normal dialing)

• Auto Pause Access for PBX and toll service operations (3.1 seconds per pause)

• Easy operation with redial, store, auto and pause keypads

• Key tone output for recognition of valid keypad entry

• Call disconnect (CD) key for line break operation

• Mute key for speech mute

• Flash time: 98 mS, 305 mS or 600 mS

• Minimum tone output duration: 93 mS

• Minimum intertone pause: 93 mS

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

• Automatic switching from pulse mode to tone mode by */T key operation

• Break/make ratio pin selectable

• Uses Form A keyboard or standard 5 × 5 matrix keyboard

• Uses inexpensive 3.579545 MHz television color-burst crystal

• Internally generated power-on reset

• Packaged in 22/24-pin DIP

• The different dialers in the W9145 series are shown in the following table:

TYPE NO. PULSE (ppS) FLASH B/M HANDFREE LOCK

W9145 10 98/305/600 Pin No No W9145A 10 98/305/600 Pin Yes No W9145L 10 98/305/600 Pin No Yes W9145AL 10 98/305/600 Pin Yes Yes

PIN CONFIGURATIONS

Publication Release Date: August 1996

- 1 - Revision A4

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W9145 SERIES

X MUTE

T/P MUTE

HKS

DP/C5

DTMF

T/P MUTE

HKS

DP/C5

DTMF

10 13

W9145

10 13

11 14

B/M

TEST

MODE

X MUTE

T/P MUTE

HKS

DP/C5

DTMF

HFI

B/M

TEST

MODE

HFO

W9145A

11 14

B/M

LOCK

MODE

X MUTE

T/P MUTE

HKS

DP/C5

DTMF

HFI

B/M

LOCK

MODE

HFO

PIN DESCRIPTION

W9145L

W9145AL

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W9145 SERIES

MUTE

HKS

SYMBOL 22-PIN 24-PIN I/O FUNCTION

ColumnRow Inputs

XT,

T/P

MODE 14 16 I Pull to VSS to enable tone mode. Pull to VDD to enable

B/M 16 16 I B/M = 1: Break/Make ratio is 60:40.

1−4

18−22

6, 7 6, 7 I, O A built-in inverter provides oscillation by means of an

8 8 O

9 9 I Hook switch input. When pulled to high, chip is in on-hook

1−4

20−24

I Keyboard inputs may be connected to either a standard

keyboard, an inexpensive signal contact (Form A) keyboard, or electronic input from a µC. A valid key entry is defined by a single row being connected to a single column.

inexpensive 3.579545 MHz crystal or ceramic resonator. The T/P

pulls to VDD in the absence of keypad input and pulls to VSS when an address keypad entry is sensed (excluding the * and # keypads in pulse mode). When any keypad in row 5 and column 5 is pushed, the mute out remains at high level.

pulse mode (10 ppS).

state (no operation). When pulled to low, chip is in offhook state (enabled for normal operation). This pin is pulled to VDD by internal resistor. Note: This pin operates in conjunction with the handfree control pins; for further information see description of handfree control pins below.

B/M = 0: Break/Make ratio is 67:33. This pin has no function in tone mode.

is a conventional CMOS inverter that

VDD, VSS 17, 5 19, 5 I Power input pins.

X MUTE 13 15 O The X MUTE is a conventional CMOS inverter that in tone

mode is active while a DTMF signal is being transmitted. In pulse mode, this output remains low at all times.

Publication Release Date: August 1996

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Pin Description, continued

HFI

LOCK

TEST

DP/C5

SYMBOL 22-PIN 24-PIN I/O FUNCTION

HFO

- 12, 13 I, O Handfree control pins. A low pulse on

toggles on the handfree control state. Status of the handfree control state is indicated in the following table:

W9145 SERIES

CURRENT STATE

HOOK SW.

On Hook Off Hook On Hook Off Hook Off Hook

pin is pulled to VDD by internal resistor.

HFO Low High High

Low High

INPUT HFI HFI HFI

Off Hook On Hook On Hook

NEXT STATE

HFO High Low Low Low Low High

DIALING

Yes

No Yes Yes

No Yes

KT 12 14 O Key tone signal output. A 1.2 KHz key tone will be

generated when any key is depressed in pulse mode or when function keys are depressed in tone mode.

(W9145L

only)

(W9145AL

only)

The function of this terminal is to prevent "0" dialing in

and "9" dialing under PABX system long distance call control. When the first key input after reset is 0 or 9, all key inputs, including the 0 or 9 key, become invalid and the chip generates no output. The telephone is reinitialized by a reset.

LOCK PIN

Floating

FUNCTION

Normal dialing mode "0," "9" dialing inhibited "0" dialing inhibited

(W9145

only)

(W9145A

only)

During normal operation, the VDD, thereby inhibiting the single tone and setting the pulse rate to 10 ppS.

10 10 O This pin is a CMOS inverter output.

The timing diagram is shown in Figure 1. Flash key will cause DP/C5 to go active in either pulse or tone mode.

- 4 -

pin should be tied to

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W9145 SERIES

Pin Description, continued

SYMBOL 22-PIN 24-PIN I/O FUNCTION

DTMF 11 11 O In pulse mode, remains in low state at all times. In tone

mode, will output a dual or single tone. Detailed timing diagram for tone mode is shown in Figure 2(a, b).

OUTPUT FREQUENCY (Hz)

R1 R2 R3 R4 C1 C2 C3

Specified

697 770 852

941 1209 1336 1477

Actual

699 766 848

948 1216 1332 1472

Error %

+0.28

-0.52

-0.47 +0.74 +0.57

-0.30

-0.34

BLOCK DIAGRAM

ROW

(R1 to R5)

COLUMN

(C1 to C4)

DTMF

KEYBOARD INTERFACE

D/A CONVERTER

HKS

MODE

READ/WRITE COUNTER

RAM

LOCATION LATCH

ROW & COLUMN PROGRAMMABLE COUNTER

HFI

XT XT

SYSTEM CLOCK GENERATOR

CONTROL LOGIC

LOCK

TEST

DATA LATCH & DECODER

B/M

PULSE CONTROL LOGIC

X MUTE

T/P MUTE

HFO

DP/C5

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FUNCTIONAL DESCRIPTION

DP/C5

HFI

¡õ

HFI

¡õ

HFI

¡õ

Keyboard Operation

C1 C2 C3 C4

1 2 3 M1 MUTE R1 4 5 6 M2 CD R2 7 8 9 M3 F1 R3

*/T 0 # SAVE F2 R4

RD S A P F3 R5

• MUTE: Mute key

• CD: Call Disconnect

• */T: * & P→T key

• RD: One-key Redial

• S: Store

• A: Auto dialing

• P: Pause

• M1 to M3: Memory 1 to 3

• SAVE: Save Memory

• F1, F2, F3: 98/305/600 mS

W9145 SERIES

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 oversteps 32 digits.

), D1 , D2 , ..., Dn

Redialing

1. OFF HOOK (or ON HOOK & a. The one-key redialing function timing diagram is shown in Figure 4.

b. Once dialing of D1 to Dn is finished, pressing RD key will cause the pulse output pin

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

c. If the pulses of the dialed number D1 to Dn have not finished,

2. OFF HOOK , D1 , D2 , ..., Dn BUSY, Come ON HOOK , OFF HOOK (or ON HOOK &

), RD

), D1 , D2 , ..., Dn , BUSY RD

RD key will be ignored.

the

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W9145 SERIES

HFI

¡õ

HFI

¡õ

HFI

¡õ

HFI

¡õ

HFI

¡õ

HFI

¡õ

Or ( ON HOOK &

, RD

If RD is the first key after off-hook, only the redialing function will be executed and the pulse output pin will not go low for the break time of 2.2 seconds.

), D1 , D2 , ..., Dn , BUSY,

, Come

Access Paus

OFF HOOK (or ON HOOK &

1. The pause function can be stored in memory.

2. The pause function may be executed in normal dialing, redialing, or repertory dialing.

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

), D1 , D2 , P , D3 , ..., Dn

Pulse-to-tone ( */T)

OFF HOOK (or ON HOOK &

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

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

D1, D2, ..., Dn, Pause (3.1S) 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 device can be reset to pulse mode only by going on-hook; device remains in tone mode when

the digits have been dialed out.

), D1 , D2 , ..., Dn , */T ,

4. The

P→T

function timing diagram is shown in Figure 6.

Flash

OFF HOOK (or ON HOOK &

1. Flash key cannot be stored as a digit in memory. Flash key 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

Publication Release Date: August 1996

- 7 - Revision A4

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Number Store

HFI

¡õ

HFI

¡õ

HFI

¡õ

HFI

¡õ

HFI

¡õ

HFI

¡õ

HFI

¡õ

W9145 SERIES

1. OFF HOOK (or ON HOOK &

Mn (or Ln ) ON HOOK (or ON HOOK &

a. The dialing of D1, D2, ..., Dn must be finished before S key may be pressed. b. D1, D2, ..., Dn will be stored in memory location Mn or Ln and then dialed out. c. Mn = M1 to M3; Ln = 0 to 9, *, Pause.

2. OFF HOOK (or ON HOOK &

Mn (or Ln ) ON HOOK (or ON HOOK &

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

b. P and */T keys can be stored as a digit in memory. In store

mode,

function key.

c. The store mode is released once the store function is completed or the state of the hook switch

changes.

), D1 , D2 , ..., Dn , S , S ,

)

), S , D1 , D2 , ..., Dn , S ,

)

P is the pause

Repertory Dialing

1. OFF HOOK (or ON HOOK &

2. OFF HOOK (or ON HOOK &

), Mn

), A , Ln

Save Key

1. OFF HOOK (or ON HOOK &

If the dialingofD1 to Dn is finished, pressing the SAVE key will cause D1 to Dn to be

duplicated to the SAVE memory.

2. ON HOOK Come OFF HOOK , SAVE

D1 to Dn will be dialed out after the SAVE key is pressed.

), D1 , D2 , ..., SAVE

Call Disconnect

OFF HOOK CD

The DP/C5 pin will go low (line break) when the CD key is pressed and the system will be reset to initial state.

Mute Key

OFF HOOK MUTE

The mute output will be switched on as long as the MUTE key is depressed.

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CD and MUTE key function timing diagram is shown in Figure 8.

HFI

¡õ

HKS

Mixed Dialing

W9145 SERIES

OFF HOOK (or ON HOOK &

1. Normal dialing + Repertory dialing + Normal dialing

2. Repertory dialing + Normal dialing + Repertory dialing

3. Redialing + Normal dialing + Repertory dialing a. Redialing and SAVE dialing are valid for first key-in only. b. The second sequence should not be performed until the first sequence is dialed out completely.

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL RATING UNIT

DC Supply Voltage Input/Output Voltage VIL VSS -0.3 V

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

VDD−VSS

VIH VDD +0.3 V VOL VSS -0.3 V VOH VDD +0.3 V

-0.3 to +7.0 V

°C

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.

°C

DC CHARACTERISTICS

VDD = 2.5V, FOSC = 3.58 MHz, TA = 25° C, unless otherwise noted

PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT

Operating Voltage VDD Tone 2.0 - 5.5 V

Pulse 2.0 - 5.5 V

Operating Current IOP Tone, Unloaded - 0.6 2 mA

Pulse, Unloaded - 0.2 0.5 mA

Memory Retention IMR

Standby Current IS Tone Output VTO

= 1, TA = 25° C

VDD = 1.0V

= 0, VDD = 2.5V

Row Group, RL = 5 KΩ

- 9 - Revision A4

- 0.1 0.2

- 0.1 5

130 150 170 Vrms

Publication Release Date: August 1996

µA

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W9145 SERIES

MUTE

HKS

TEST

DC Characteristics, continued

PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT

Pre-Emphasis Column Group/Row Group

VDD = 2.0−5.5V DTMF Distortion THD HFO Drive/Sink IHFH VHFH = 2.0V 0.5 - - mA Current IHFL VHFL = 0.5V 0.5 - - mA Tone Output External

Load Impedance Tone Output DC Level VDC Tone Output Sink

Current Pulse Output IPH VPO = 2.0V -0.2 - - mA Drive/Sink Current IPL VPO = 0.5V 0.2 - - mA

T/P Drive/Sink Current IML VMO = 0.5V 2 - - mA Key Tone Output IKH VKO = 2.0V -0.5 - - mA Drive/Sink Current IKL VKL = 0.5V 0.5 - - mA X MUTE Drive/Sink ILH VLO = 2.0V -0.2 - - mA Current IIL VLO = 0.5V 0.2 - - mA

Output

IMH VMO = 2.0V -0.2 - - mA

RL = 5 KΩ

THD < -23 dB

VDD = 2.0−5.5V

ITL VTO = 0.5V 0.2 - - mA

1 2 3 dB

- -30 -23 dB

5 - -

1.0 - 3.0 V

KΩ

Input Voltage Low VIL GND - 0.3

VDD

Input Voltage High VIH 0.7

VDD Keypad Input IKD VI = 0V 10 30 80 Drive/Sink Current IKS VI = 2.5V 200 400 Control Pin Input IIN

, MODE,

, B/M

- -

- VDD V

±25 µA

AC CHARACTERISTICS

PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT

Key-in Debounce TKID - 20 - mS Key-release Debounce TKRD - 20 - mS Key tone Delay TKD - 20 - mS

- 10 -

µA µA

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W9145 SERIES

AC Characteristics, continued

PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT

One-key Redial Break Time

One-key Redial Break Pause Time

Pulse Mute Delay TMD B/M = 1 - 40 - mS

Pre-digit Pause TPDP B/M = 1 - 40 - mS

Pulse Rate TPR Mode = 1 - 10 - ppS Interdigit Pause TIDP - 800 - mS Make/Break Ratio M:B B/M = 1 - 40:60 - %

Tone Duration TTD Auto Dialing - 93 - mS Intertone Pause TITP Auto Dialing - 93 - mS Flash Break Time TFB F1 - 98 - mS

Pause Time TP - 3.1 - S

TRB - 2.2 - S

TRP - 600 - mS

B/M = 0 - 33.3 - mS

B/M = 0 - 33.3:66.7 - %

F2 - 305 - mS F3 - 600 - mS

Key Tone Frequency f8 - 1.2 - KHz

Publication Release Date: August 1996

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TIMING WAVEFORMS

HKS

W9145 SERIES

KEY IN

DP/C5

T/P MUTE

DTMF

X MUTE

OSC.

HKS

KEY IN

DTMF

X MUTE

KID

PDP

OSCILLATION

MANUAL DIALING

IDP

KRD

LOW

Figure 1. Pulse Mode Dialing Timing Diagram

KID

ITP

OSCILLATION

AUTO DIALING

KRD

KID

KRD

ITP

T/P MUTE

DP/C5

OSC.

OSCILLATION

Figure 2(a). Tone Mode Normal Dialing Diagram

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OSCILLATION

Page 13

Timing Waveforms, continued

HKS

W9145 SERIES

KEY IN

DTMF

X MUTE

T/P MUTE

DP/C5

OSC.

HKS

KID

ITP

OSCILLATION

ON HOOK

Figure 2(b). Tone Mode Redialing Timing Diagram

OFF HOOK

ON HOOK

ITP

HFI

DP/C5

HFO

T/P MUTE

X MUTE

CHIP ENABLE

LOW

Figure 3(a). Handfree Function Timing Diagram

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Page 14

Timing Waveforms, continued

HKS

HFI

DP/C5

HFO

T/P MUTE

W9145 SERIES

X MUTE

CHIP ENABLE

HKS

HFI

DP/C5

HFO

T/P MUTE

X MUTE

LOW

Figure 3(b). Handfree Function Timing Diagram

ON HOOK

LOW

CHIP ENABLE

Figure 3(c). Handfree Function Timing Diagram

- 14 -

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Timing Waveforms, continued

HKS

W9145 SERIES

LOW

KEY IN

DP/C5

T/P MUTE

X MUTE

DTMF

OSC.

HKS

KEY IN

KID

Figure 4. Pulse Mode Timing Diagram

KID

LOW

OSCILLATION

P 24

PDP

IDP

DP/C5

T/P MUTE

DTMF

X MUTE

OSC.

PDP

Figure 5. Pause Function Timing Diagram

TIDP

LOW

OSCILLATION

TIDP

- 15 - Revision A4

IDP

Publication Release Date: August 1996

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Timing Waveforms, continued

HKS

W9145 SERIES

KEY IN

DP/C5

T/P MUTE

DTMF

X MUTE

OSC.

HKS

KEY IN

4 2

*/T

TKID

PDP

Figure 6. P→T Operation Timing Diagram in Normal Dialing

KID

TIDP

LOW

OSCILLATION

LOW

IDP

ITP

DP/C5

T/P MUTE

X MUTE

DTMF

OSC.

OSCILLATION

Figure 7. Flash Operation Timing Diagram

- 16 -

LOW

Page 17

Timing Waveforms, continued

HKS

W9145 SERIES

KEY IN

HFI

DP/C5

HFO

T/P MUTE

X MUTE

CHIP ENABLE

Figure 8. Mute Key Operation Timing Diagram

(MT = MUTE KEY)

Publication Release Date: August 1996

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W9145 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.

- 18 -

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