HoltekHT622xA系列红外线遥控方案
Holtek 公司的HT622xA系列红外线遥控器IC,采用内建OSC电路及红外线LED驱动MOSFET,比传统红外线遥控器IC节省许多的外部零件, 工作电压2.0V-3.6V,待机静态电流小于1uA,载波频率为38kHz,采用脉冲位置调制方法,透过红外线LED发码,内含16位位置码及8位数据码, HT6220A/HT6221A/HT6222A分别支持30/32/64按键输入。广泛使用于各种遥控器如电视机、机上盒、DVD播放机、音响、小家电等。本文介绍HT622xA系列主要特性, 方框图以及HT6220A,HT6221A和HT6222A应用电路.
The devices HT622xA are CMOS LSI encoders designed for use in remote control systems. They are capable of encoding 16-bit address codes and 8-bit data codes. Each address/data input can be set to one of the two logic states, 0 and 1.
The HT6220A/HT6221A/HT6222A contain 30keys (K1~K16, K17~K20, K33~K34, K37~K38, K41~K42, K45~K46, K49~K50), 32 keys (K1~K32) and 64 keys (K1~K64), respectively. When one of the keys is triggered, the programmed address/data is transmitted together with the header bits via an IR (38kHz carrier) transmission medium.
HT622x主要特性:
_ Operating voltage: 2.0V~3.6V
_ DOUT with 38kHz carrier for IR medium
_ Low standby current
_ Minimum transmission word: one word
_ Build-in RC (Internal RC) oscillator
_ 16-bit address codes
_ 8-bit data codes
_ PPM code method
_ Three double-active keys
_ Maximum active keys
_ HT6220A: 30 keys
_ HT6221A: 32 keys
_ HT6222A: 64 keys
_ Low power and high noise immunity CMOS technology
_ HT6220A: 16-pin NSOP package
_HT6221A: 20-pin SOP package
_HT6222A: 24-pin SOP package
HT622x应用:
_ Television , setup box and DVD player controllers
_ Burglar alarm systems
_ Smoke and fire alarm systems
_ Garage door controllers
_ Car door controllers
_ Car alarm systems
_ Security systems
_ Other remote control systems
图1.HT622x方框图
图2.HT6220A 应用电路
图3.HT6221A 应用电路
图4.HT6222A 应用电路
The devices HT622xA are CMOS LSI encoders designed for use in remote control systems. They are capable of encoding 16-bit address codes and 8-bit data codes. Each address/data input can be set to one of the two logic states, 0 and 1.
The HT6220A/HT6221A/HT6222A contain 30keys (K1~K16, K17~K20, K33~K34, K37~K38, K41~K42, K45~K46, K49~K50), 32 keys (K1~K32) and 64 keys (K1~K64), respectively. When one of the keys is triggered, the programmed address/data is transmitted together with the header bits via an IR (38kHz carrier) transmission medium.
HT622x主要特性:
_ Operating voltage: 2.0V~3.6V
_ DOUT with 38kHz carrier for IR medium
_ Low standby current
_ Minimum transmission word: one word
_ Build-in RC (Internal RC) oscillator
_ 16-bit address codes
_ 8-bit data codes
_ PPM code method
_ Three double-active keys
_ Maximum active keys
_ HT6220A: 30 keys
_ HT6221A: 32 keys
_ HT6222A: 64 keys
_ Low power and high noise immunity CMOS technology
_ HT6220A: 16-pin NSOP package
_HT6221A: 20-pin SOP package
_HT6222A: 24-pin SOP package
HT622x应用:
_ Television , setup box and DVD player controllers
_ Burglar alarm systems
_ Smoke and fire alarm systems
_ Garage door controllers
_ Car door controllers
_ Car alarm systems
_ Security systems
_ Other remote control systems
图1.HT622x方框图
图2.HT6220A 应用电路
图3.HT6221A 应用电路
图4.HT6222A 应用电路
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