HT6220A Datasheet | Holtek Semiconductor

Features - Operating voltage: 2.0V~3.6V - DOUT with 38k Hz 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: 6 keys (8SOP) or 30 keys (16NSOP) - HT6221A: 32 keys - HT6221B: 48 keys - HT6222A: 64 keys - Low power and high noise immunity CMOS technology - HT6220A: selection of 16-pin NSOP or 8-pin SOP package HT6221A/HT6221B: 20-pin SOP package HT6222A: 24-pin SOP package Applications - 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 General Description The devices 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/HT6221B/HT6222A contain 6keys (K21~K23, K25~K27) or 30keys (K1~K20, K33~K34, K37~K38, K41~K42, K45~K46, K49~K50), 32 keys (K1~K32), 48 keys (K1~K32, K33~K34, K37~K38, K41~K42, K45~K46, K49~K50, K53~K54, K57~K58, K61~K62) 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 (38k Hz carrier) transmission medium. Block Diagram O s c illa to r D iv id e r D a ta S e le c t & B u ffe r DOUT LE D R1 K e y b o a rd ¸ 2 4 C o u n te r & 1 of24 D ecoder S ync. C ir c u...