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HT6280 Dataheets PDF



Part Number HT6280
Manufacturers Holtek Microelectronics
Logo Holtek Microelectronics
Description Car Alarm Decoder
Datasheet HT6280 DatasheetHT6280 Datasheet (PDF)

HT6280 Car Alarm Decoder Features • Operating voltage: 3V~5V • Low power dissipation and high noise im- munity CMOS technology • A built-in oscillator with only a 5% resistor • 312 trinary address codes • 6 decoder control data outputs General Description The HT6280 is an 18-bit decoder CMOS LSI designed for use in remote control car alarm system. When complemented by one of the TE triggered HT600/HT640/HT680 or DATA triggered HT6187/HT6207/HT6247 encoder ICs from a range of 318 series of encod.

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HT6280 Car Alarm Decoder Features • Operating voltage: 3V~5V • Low power dissipation and high noise im- munity CMOS technology • A built-in oscillator with only a 5% resistor • 312 trinary address codes • 6 decoder control data outputs General Description The HT6280 is an 18-bit decoder CMOS LSI designed for use in remote control car alarm system. When complemented by one of the TE triggered HT600/HT640/HT680 or DATA triggered HT6187/HT6207/HT6247 encoder ICs from a range of 318 series of encoders, a complete remote car alarm system can be formed. The details on the 318 encoders can be found in the relevant databook encoder section. • 3 local alarm trigger inputs: – TRIG, AL+, AL- • A valid transmission indicator (LED) • ACC disarms the whole car alarm system • Easily interface with an RF or an IR medium After receiving the 18 bits of information from the encoder the HT6280 interprets the first 12 bits as address and the last 6 bits as control signal data. If these received 12 bits of address matches that of the locally set address then the 6 data bits are latched and the control function executed. Three types of control function are incorporated in the device, these are arm/disarm, panic and power on/off. The HT6280 also provides 3 momentary data outputs for other user defined special purposes. 1 12th Apr ’96 Pin Assignment HT6280 2 12th Apr ’96 Block Diagram HT6280 Pin Description HT6280 — 40 Pins Pin No. Pin Name I/O Internal Connection Description 1 OSC2 I OSCILLATOR Oscillator output pin 2 DIN I CMOS IN Serial data input pin 3~5 NC — — No connection 6~17 A0~A11 I TRANSMISSION A0~A11 address inputs GATE They can be set to VDD, VSS, or floating. 18~20 D15~D17 O CMOS OUT D15~D17 momentary data outputs from D15~ D17 of an encoder, for external control use ON/OFF output pin for external control use 21 ON/OFF O CMOS OUT Toggle outputs of the ON/OFF pin are triggered by D14 of an encoder. 3 12th Apr ’96 HT6280 Pin No. Pin Name I/O 22 RESET I 23 TEST O 24 ACC I 25,26 27 NC VDD — I 28 LOCK O 29 LED O 30 UNLOCK O 31 FLASH O 32 SIREN O 33 TRIG I 34 AL- I 35 AL+ I 36 ARM O 37 OPT2 38 VSS I I 39 OPT1 I 40 OSC1 I Internal Connection CMOS IN CMOS OUT CMOS IN Pull-Low — — CMOS OUT NMOS OUT CMOS OUT CMOS OUT CMOS OUT CMOS IN Pull-High CMOS IN Pull-High CMOS IN Pull-Low CMOS OUT CMOS IN Pull-High — CMOS IN Pull-High OSCILLATOR Description System reset pin For IC testing only An active high signal to the ACC pin disarms the alarm system. No connection Positive power supply Lock signal output to control external lock/unlock, active high LED indictor for arm/disarm, alarm, and panic Unlock signal output to control external lock/unlock, active high Flash output pin to control external car lamp circuit, active high Alarm output pin to control external siren circuit, active high Alarm trigger input in the arm state, active high Alarm trigger input in the arm state, active low Alarm trigger input in the .


TA31145FNG HT6280 C-561I


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