Operating voltage: 2.4V~12V power high noise immunity CMOS technology

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Operating voltage: 2.4V~12V power high noise immunity CMOS technology

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HT600/680/6207 Series Encoders
Operating voltage: 2.4V~12V power high noise immunity CMOS technology standby current Three words transmission Built-in oscillator needs only resistor
Easy interface with infrared transmission media Minimal external components Package information: refer Selection Table
Applications
Burglar alarm system Smoke fire alarm system Garage door controllers door controllers
alarm system Security system Cordless telephones Other remote control systems
General Description
encoders series CMOS LSIs remote control system applications. They capable encoding bits information which consists address bits 18-N data bits. Each address/data input externally trinary programmable bonded out. otherwise floating internally. Various packages encoders offer flexible combinations programmable address/data meet various application needs. programmable address/data transmitted together with header bits infrared transmission medium upon receipt trigger signal. capability select trigger type DATA trigger type further enhances application flexibility series encoders.
Selection Table
Function Address Address/ Data Part HT600 HT680 HT6207 Data Dummy Code Oscillator oscillator oscillator oscillator Trigger D12~D15 Package DIP/SOP DIP/SOP DIP/SOP
Note: Address/Data represents addressable pins data according decoder requirements.
April 2000
HT600/680/6207
Block Diagram
trigger HT600/HT680
illa
DATA trigger HT6207
illa
Note: address/data pins available various combinations.
April 2000
HT600/680/6207
Assignment
Description
Name A0~A11 AD10~AD17 D12~D15 DOUT OSC1 OSC2 Internal Connection Description
TRANSMISSION Input pins address A0~A11 setting GATE They externally VDD, VSS, left open. TRANSMISSION Input pins address/data (AD10~AD17) setting GATE They externally VDD, VSS, left open. CMOS Pull-low CMOS NMOS CMOS Pull-low OSCILLATOR OSCILLATOR Input pins data (D12~D15) setting transmission enable (active high) They externally left open (see Note). Encoder data serial transmission output transmission enable indicator Transmission enable, active high (see Note). Oscillator input Oscillator output Negative power supply, ground Positive power supply
Note: D12~D15 data input transmission enable pins HT6207. transmission enable HT600/HT680.
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HT600/680/6207
Approximate internal connections
Absolute Maximum Ratings
Supply Voltage.-0.3V Input Voltage.VSS-0.3 VDD+0.3V Storage Temperature.-50°C 125°C Operating Temperature .-20°C 75°C
Note: These stress ratings only. Stresses exceeding range specified under Maximum cause substantial damage device. Functional operation this device other conditions beyond those listed specification implied prolonged exposure extreme conditions affect device reliability.
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HT600/680/6207
Electrical Characteristics
Symbol ISTB ILED IDOUT fOSC RDATA Parameter Operating Voltage Standby Current Operating Current Sink Current Output Drive Current Input Voltage Input Voltage Oscillator Frequency Pull-low Resistance D12~D17 Pull-low Resistance Test Conditions VTE=5V VDATA=5V Conditions Oscillator stops load fOSC=100kHz VLED=0.5V VOH=0.9VDD (Source) VOL=0.1VDD (Sink) ROSC=330kW Min. -0.6 0.8VDD Typ. 1200 -1.2 Max. 2400 0.2VDD Ta=25°C Unit
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HT600/680/6207
Functional Description
Operation series encoders begins three-word transmission cycle upon receipt transmission enable HT600/HT680 D12~D15 HT6207, active high). This cycle will repeat itself long transmission enable D12~D15) held high. Once transmission enable falls low, encoder output completes final cycle then stops shown below.
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Transmission timing Information word information word consists four periods shown:
Composition information Address/data waveform Each programmable address/data externally following three logic states:
Address/Data waveform state data input interpreted logic decoders since decoder output only have states.
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HT600/680/6207
Address/data programming (preset) status each address/data individually preset logic transmission enable signal applied, encoder scans transmits status bits address/data serially order AD17 HT600/HT680 HT6207. There some packaging limitations. example 18-pin HT680, offers four external data bits eight external address bits. remaining unpackaged bits dummy codes treated floating A0~AD17 pull-low D12~D15. During information transmission these bits still located their original position. trigger signal applied, chip only consumes standby current which less than 1mA. address pins usually preset transmit data codes with particular security codes switches wiring, while data selected using push buttons electronic switches. following figure shows application using HT680:
transmitted information shown: Pilot Sync. floating AD10 AD11
AD12 AD13 AD14 AD15 AD16 AD17
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HT600/680/6207
Address/Data sequence following provides table address/data sequence various models series encoders. correct device should selected according individual address data requirementss. Part HT600 HT680 HT6207 Address/Data Bits A0~A3 A6~A9 A6~A9 A6~A9 A0~A3 A0~A3 AD11 AD12 AD13 AD14 AD15 AD11 AD12 AD14 AD15
Note: dummy code which left bonded out. dummy code which bonded out.
Transmission enable trigger type encoders, transmission enabled applying high signal pin. Data trigger type encoders, enabled applying high signal data pins D12~D15. Flowchart
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Note: D12~D15 transmission enables HT6207. transmission enable HT600/HT680.
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HT600/680/6207
Oscillator frequency supply voltage
recommended oscillator frequency fOSCD (decoder) fOSCE (encoder)
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HT600/680/6207
Application Circuits
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Note: Typical infrared diode: EL-1L2 (KODENSHI CORP.) Typical transmitter: JR-220 (JUWA CORP.) TX-99 (MING MICROSYSTEM, U.S.A.)
April 2000
HT600/680/6207
Holtek Semiconductor Inc. (Headquarters) No.3, Creation Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. Tel: 886-3-563-1999 Fax: 886-3-563-1189 Holtek Semiconductor Inc. (Taipei Office) 11F, No.576, Sec.7 Chung Hsiao 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 Semiconductor (Hong Kong) Ltd. RM.711, Tower Cheung Plaza, Cheung Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Holtek Semiconductor (Shanghai) Ltd. Floor, Building No.889, Shan Rd., Shanghai, China Tel: 021-6485-5560 Fax: 021-6485-0313 Holmate Technology Corp. 48531 Warm Springs Boulevard, Suite 413, Fremont, 94539 Tel: 510-252-9880 Fax: 510-252-9885 Copyright 2000 HOLTEK SEMICONDUCTOR INC. information appearing this Data Sheet believed accurate time publication. However, Holtek assumes responsibility arising from specifications described. applications mentioned herein used solely purpose illustration Holtek makes warranty representation that such applications will suitable without further modification, recommends products application that present risk human life malfunction otherwise. Holtek reserves right alter products without prior notification. most up-to-date information, please visit site http://www.holtek.com.tw.
April 2000

Operating voltage: 2.4V~12V power high noise immunity CMOS technology

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