Datasheet HT6247, HT640, HT6187 Datasheet (Holtek Semiconductor Inc)

Features

Operating voltage: 2.4V~12V

·

Low power and high noise immunity CMOS

·

technology Low standby current

·

Three words transmission

·

Applications

Burglar alarm system

·

Smoke and fire alarm system

·

Garage door controllers

·

Car door controllers

·

General Description

The 318encoders are a series of CMOS LSIs for remote control system applications. They are capable of encoding 18 bits of information which consists of N address bits and 18-N data bits. Each address/data input is externally trinary programmable if bonded out. It is otherwise set floating internally. Various packages of

18

the 3

encoders offer flexible combinations of

18

3

Series of Encoders

Built-in oscillator needs only 5% resistor

·

Easy interface with an RF or infrared trans

·

mission media Minimal external components

·

Car alarm system

·

Security system

·

Cordless telephones

·

Other remote control systems

·

programmable address/data to meet various application needs. The programmable ad dress/data is transmitted together with the header bits via an RF or an infrared transmis sion medium upon receipt of a trigger signal. The capability to select a TE trigger type or a DATA trigger type further enhances the application flexibility of the 3

18

series of encoders.

-

Selection Table

Function

Part No.

HT600 9 5 0 4 RC oscillator TE 20 DIP/20 SOP

HT640 10 8 0 0 RC oscillator TE 24 SOP/24 SDIP

HT680 8 4 0 6 RC oscillator TE 18 DIP

HT6187 9 0 3 6 RC oscillator D12,D14,D15 18 DIP/20 SOP

HT6207 10 0 4 4 RC oscillator D12~D15 20 DIP/20 SOP

HT6247 12 0 6 0 RC oscillator D12~D17 24 SOP/24 SDIP

Note: Address/Data represents addressable pins or data according to the decoder requirements.

Address

No.

Address/ Data No.

Data

No.

Dummy

Code No.

1 July 8, 1999

Oscillator Trigger Package

318Series of Encoders

Block Diagram

TE trigger DATA trigger

HT600/HT640/HT680 HT6187/HT6207/HT6247

OSC2

OSC1

OSC2

OSC1

O scillator

TE

A0

18

Transm ission

Gate Circuit

A9

AD10

AD17

33 Divider

¸

18 C ounter

¸

& 1 of 18

D ecoder

Trinary

Detector

D ata Select

& Buffer

Sync.

Circuit

VDD VSS

DOUT

O scillator

A0

18

Transm ission

Gate Circuit

A11

D12

Note: The address/data pins are available in various combinations.

Pin Assignment

TE trigger type

9-A ddress 5 -A d d re s s /D a ta

1

AD11

2

AD12

3

AD13

4

AD14

5

AD15

DOUT

OSC2

OSC1

TE

VSS

6

7

8

9

10

HT600

20 D IP /S O P

8-A ddress 4-A d dress/D ata

VDD

20

19

A9

18

A8

17

A7

16

A6

A4

15

A3

14

A2

13

A1

12

11

A0

AD11

AD12

AD14

AD15

DOUT

TE

OSC2

OSC1

VSS

1

2

3

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

HT680

18 D IP /S O P

10-A ddress 8-A d dress/D ata

AD11

AD12

AD13

VDD

A9

A8

A7

A6

A3

A2

A1

A0

AD14

AD15

AD16

AD17

DOUT

OSC2

OSC1

1

2

3

4

5

6

7

8

TE

9

10

11

VSS

12

24 SOP/SDIP

D17

HT640

33 Divider

¸

18 C ounter

¸

& 1 of 18 D ecoder

Trinary

Detector

24

23

22

21

20

19

18

17

16

15

14

13

VDD

AD10

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

D ata Select

& Buffer

Sync.

Circuit

LED Circuit

VDD VSS

DOUT

LED

2 July 8, 1999

DATA trigger type

318Series of Encoders

VDD

A9

A8

A7

A6

A4

A3

A2

A1

A0

12-A dd ress 6 -D a ta

DOUT

OSC2

OSC1

9-A ddress 3 -D a ta

A11

1

2

D12

D14

3

4

D15

5

DOUT

LED

6

OSC2

7

OSC1

8

VSS

9

H T 6187

18 D IP

9 -A d d r e s s 3 -D a ta

18

VDD

17

A9

A8

16

15

A7

14

A6

A3

13

A2

12

A1

11

A0

10

NC

A11

D12

D14

D15

DOUT

LED

OSC2

OSC1

VSS

19

2

18

3

17

4

16

5

15

6

14

7

13

8

12

9

11

10

20

1

H T 6187

20 S O P

NC

VDD

A9

A8

A7

A6

A3

A2

A1

A0

10-A ddress 4 -D a ta

A11

1

2

D12

3

D13

4

D14

5

D15

DOUT

6

LED

7 8

OSC2

OSC1

9

10

VSS

H T 6207

20 DIP/SO P

20

19

18

17

16

15

14

13

12

11

Pin Description

Pin Name I/O

A0~A11 I

AD10~AD17 I

D12~D17 I

DOUT O CMOS OUT Encoder data serial transmission output

LED O NMOS OUT LED transmission enable indicator

TE I

OSC1 I OSCILLATOR Oscillator input pin

OSC2 O OSCILLATOR Oscillator output pin

VSS I

VDD I

Internal

Connection

TRANSMISSION

GATE

TRANSMISSION

GATE

CMOS IN

Pull-low

CMOS IN

Pull-low

¾

Description

Input pins for address A0~A11 setting They can be externally set to VDD, VSS, or left open.

Input pins for address/data (AD10~AD17) setting They can be externally set to VDD, VSS, or left open.

Input pins for data (D12~D17) setting and transmission enable (active high) They an be externally set to VDD or left open (see Note).

Transmission enable, active high (see Note).

Negative power supply (GND)

Positive power supply

A11

1

2

D12

3

D13

4

D14

5

D15

D16

6

D17

7

8

LED

9

10

11

VSS

12

H T 6247

24 SOP/SDIP

24

VDD

23

A10

22

A9

21

A8

20

A7

A6

19

A5

18

A4

17 16

A3

15

A2

A1

14

A0

13

Notes: D12~D17 are data input and transmission enable pins of the HT6187/HT6207/HT6247.

TE is the transmission enable pin of the HT600/HT640/HT680.

3 July 8, 1999

Approximate internal connection circuits

318Series of Encoders

TRANSM ISSION

GATE

OSCILLATOR

EN

OSC1

CMOS IN Pull-low

OSC2

CMOS OUT

NMOS OUT

Absolute Maximum Ratings

Supply Voltage...............................-0.3V to 13V

Storage Temperature.................-50°Cto125°C

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-

mum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

Input Voltage ...................V

-0.3 to VDD+0.3V

SS

Operating Temperature ..............-20°Cto75°C

Electrical Characteristics

Symbol Parameter

V

DD

I

STB

I

DD

I

LED

I

DOUT

Operating Voltage

Standby Current

Operating Current

LED Sink Current 5V

Output Drive Current

Test Conditions

V

DD

Conditions

¾¾

3V

Oscillator stops

12V

5V

No load

=100kHz

f

OSC

12V

V

=0.5V

LED

V

5V

=0.9VDD(Source)

OH

V

=0.1VDD(Sink)

OL

4 July 8, 1999

Ta=25°C

Min. Typ. Max. Unit

2.4

¾

0.1 1

24

250 500

1200 2400

1.5 3

-0.6 -1.2 ¾

0.6 1.2

12 V

mA

¾

mA

¾

mA

318Series of Encoders

Symbol Parameter

V

f

OSC

R

IH

IL

TE

DATA

²H² Input Voltage ¾¾

²L² Input Voltage ¾¾

Oscillator Frequency 10V

TE Pull-low Resistance 5V

D12~D17 Pull-low Resistance

V

DD

5V

Conditions

=330kW¾

R

OSC

V

=5V

TE

=5V

V

DATA

Min. Typ. Max. Unit

0.8V

¾

DD

0

100

1.5 3

¾

V

DD V

0.2V

DD

¾

kHz

MW

V

Functional Description

Operation

18

Test Conditions

The 3 able (TE for the HT600/HT640/HT680 or D12~D17 for the HT6187/HT6207/HT6247, active high). This cycle will repeat itself as long as the transmission enable (TE or D12~D17) is held high. Once the transmission enable falls low, the encoder output completes its final cycle and then stops as shown below.

series of encoders begins a three-word transmission cycle upon receipt of a transmission en

TE or

D 12~D 17

Encoder

Data Out

< 1 w ord

3 w ords

Transm itted

C ontinuously

3 w ords

-

Transmission timing

Information word

An information word consists of 4 periods as shown:

1/6 bit

Pilot period

(6 b its)

Sync. period

Composition of information

5 July 8, 1999

Address code period

D ata code period

318Series of Encoders

Address/data waveform

Each programmable address/data pin can be externally set to one of the following three logic states:

fo sc ¸ 33

"O n e "

"Z ero"

"O pen"

Address/D ata B it

Address/Data bit waveform

The ²Open² state data input is interpreted as logic low by the decoders since the decoder output only have two states.

Address/data programming (preset)

The status of each address/data pin can be individually preset to logic ²high², ²low²,or²floating².Ifa transmission enable signal is applied, the encoder scans and transmits the status of the 18 bits of ad dress/data serially in the order A0 to AD17 for the HT600/HT640/HT680 and A0 to D17 for the HT6187/HT6207/HT6247.

There are some packaging limitations. The 18-pin DIP HT680, for example, offers four external data bits and eight external address bits. The remaining unpackaged bits or dummy codes are treated as floating for A0~AD17 or as pull-low for D12~D17. During an information transmission these bits are still located in their original position. But if the trigger signal is not applied, the chip only consumes a standby current which is less than 1mA.

The address pins are usually preset to transmit data codes with particular security codes by the DIP switches or PCB wiring, while the data is selected using push buttons or electronic switches.

The following figure shows an application using the HT680:

-

VSSA0A1A2A3A6A7A8A9

6 July 8, 1999

OSC1 OSC2

VDD

TE AD 11 A D 12 A D 14 AD 15

DOUT

Transm ission

m edium

VDD

The transmitted information is as shown:

318Series of Encoders

Pilot

A1ZA20A31A4ZA5

A61A7ZA80A90AD10ZAD11

&

Sync.A00

Z

AD12ZAD13ZAD14ZAD151AD16ZAD17

¾

Z

Z: floating

Address/Data sequence

The following provides a table of address/data sequence for various models of the 3

18

series encoders. A

correct device should be selected according to the individual address and data requirementss.

Address/Data Bits

Part No.

0~3 4 5 6~9 10 11 12 13 14 15 16 17

HT600 A0~A3 A4

¾

A6~A9

AD11 AD12 AD13 AD14 AD15

¾

¾¾

HT640 A0~A3 A4 A5 A6~A9 AD10 AD11 AD12 AD13 AD14 AD15 AD16 AD17

HT680 A0~A3

HT6187 A0~A3

¾¾

HT6207 A0~A3 A4

¾

A6~A9

AD11 AD12

¾

A11 D12 D14 D15

¾

A11 D12 D13 D14 D15

¾

AD14 AD15

¾¾

HT6247 A0~A3 A4 A5 A6~A9 AD10 A11 D12 D13 D14 D15 D16 D17

Notes:

²¾² is a dummy code which is left ²open² and not bonded out.

²²is a dummy code which is set low and not bonded out.

Z

Transmission enable

For the TE trigger type of encoders, transmission is enabled by applying a high signal to the TE pin. But for the Data trigger type of encoders, it is enabled by applying a high signal to one of the data pins D12~D17.

7 July 8, 1999

Flowchart

318Series of Encoders

Power on

Standby m ode

No

Transm ission

enabled ?

Yes

3 data w ords

transm itted

Transm ission

s till enabled ?

Yes

3 data w ords

transm itted

continuously

Notes: D12~D17 are transmission enables of the HT6187/HT6207/HT6247.

TE is the transmission enable of the HT600/HT640/HT680.

8 July 8, 1999

Oscillator frequency vs supply voltage

fo s c

(S cale)

3.00

318Series of Encoders

W

Rosc (

)

2.75

2.50

2.25

2.00

1.75

1.50

1.25

(100kH z) 1.00

0.75

0.50

0.25

The recommended oscillator frequency is f

120k

150k

180k

220k

270k

330k

390k 470k

560k 680k

820k 1M

1.5M 2M

2345678910111212.5

OSCD

(decoder) @ f

OSCE

(encoder).

VDD (V D C)

9 July 8, 1999

Application Circuits

318Series of Encoders

Transm itter C ircuit

1

2

3

4

5

6

7

Rosc

8

9

Transm itter C ircuit

1

2

3

4

5

6

7

8

Rosc

9

10

AD11

AD12

AD14

AD15

DOUT

TE

OSC2

OSC1

VSS

AD11

AD12

AD13

AD14

AD15

DOUT

TE

OSC2

OSC1

VSS

HT600

VDD

A9

A8

A7

A6

A4

A3

A2

A1

A0

A9

A8

A7

A6

A3

A2

A1

A0

Transm itter C ircuit

VDD VDD

18

17

16

15

14

13

12

11

10

1k

W

Rosc

1

2

3

4

5

6

7

8

9

A11

D12

D14

D15

DOUT

LED

OSC2

OSC1

VSS

VDD

A9

A8

A7

A6

A3

A2

A1

A0

18

17

16

15

14

13

12

11

10

HT6187HT680

Transm itter C ircuit

VDD

20

19

18

17

16

15

14

13

12

11

1k

W

Rosc

10

1

2

3

4

5

6

7

8

9

A11

D12

D13

D14

D15

DOUT

LED

OSC2

OSC1

VSS

VDD

A9

A8

A7

A6

A4

A3

A2

A1

A0

20

19

18

17

16

15

14

13

12

11

VDD

HT6207

10 July 8, 1999

318Series of Encoders

Transm itter C ircuit

VDD

A10

A9

A8

A7

A4

A3

A2

A1

A0

24

23

22

21

20

19

18

17

1k

Rosc

W

10

11

12

16

15

14

13

Rosc

1

AD11

2

AD12

3

AD13

4

AD14

5

AD15

6

AD16

7

AD17A6A5

8

DOUT

9

TE

10

OSC2

11

OSC1

12

VSS

HT640 HT6247

Notes: Typical infrared diode: EL-1L2 (KODENSHI CORP.)

Typical RF transmitter: JR-220 (JUWA CORP.)

TX-99 (MING MICROSYSTEM, U.S.A.)

Transm itter C ircuit

1

2

3

4

5

6

7

8

9

A11

D12

D13

D14

D15

D16

D17

DOUT

LED

OSC2

OSC1

VSS

VDD

A10

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

VDD

24

23

22

21

20

19

18

17

16

15

14

13

11 July 8, 1999

318Series of Encoders

Holtek Semiconductor Inc. (Headquarters)

No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. Tel: 886-3-563-1999 Fax: 886-3-563-1189

Holtek Semiconductor Inc. (Taipei Office)

5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C. Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline)

Holtek Microelectronics Enterprises Ltd.

RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657

The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may pres ent a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.

12 July 8, 1999

-