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HT6221A Datasheet(PDF) 1 Page - Holtek Semiconductor Inc |
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HT6221A Datasheet(HTML) 1 Page - Holtek Semiconductor Inc |
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1 / 19 page  HT6220A/HT6221A/HT6221B/HT6222A Multi-Purpose Encoders Block Diagram Rev. 1.10 1 June 1, 2010 Features · 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 - HT6221B: 48 keys - HT6222A: 64 keys · Low power and high noise immunity CMOS technology · HT6220A: 16-pin NSOP 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 encod- ing 16-bit address codes and 8-bit data codes. Each ad- dress/data input can be set to one of the two logic states, 0 and 1. The HT6220A/HT6221A/HT6221B/HT6222A contain 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 trig- gered, the programmed address/data is transmitted to- gether with the header bits via an IR (38kHz carrier) transmission medium. O s c i l l a t o r D i v i d e r V D D V S S K e y b o a r d M a t r i x & G a t e C i r c u i t ¸ 2 4 C o u n t e r & 1 o f 2 4 D e c o d e r B i n a r y D e t e c t o r D O U T D a t a S e l e c t & B u f f e r S y n c . C i r c u i t R 1 R 8 D a t a R O M & R e g i s t e r s C 1 C 8 A I N D 7 L E D |
Similar Part No. - HT6221A |
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Similar Description - HT6221A |
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