|
Holtek 公司的HT622xA系列红外线遥控器IC,接纳内建OSC电路及红外线LED驱动MOSFET，比传统红外线遥控器IC节流许多的外部零件, 工作电压2.0V-3.6V,待机静态电流小于1uA，载波频率为38kHz，接纳脉冲位置调制方法，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。本京电港论坛文章先容HT622xA系列主要特点, 方框架图以及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主要特点: _ 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 http://www.holtek.com.tw/PDF/consumer/622xAv100.pdf |
热点图文
