Maker : Holtek Semiconductor
Part No. : HT6222A

  Datasheet PDF : HT6222A.pdf
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Product Information

HT6220A/HT6221A/HT6222A Multi-Purpose Encoders 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 - 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 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/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. Block Diagram www.DataSheet4U.com O s c illa to r D iv id e r D a ta S e le c t & B u ffe r S y n c . C ir c u it D O U T L E D R 1 R 8 K e y b o a rd M a tr ix & G a te C ir c u it D a ta R O M & R e g is te r s ¸ 2 4 C o u n te r & 1 o f 2 4 D e c o d e r B in a r y D e te c to r C 1 C 8 A IN D 7 V D D V S S Rev. 1.00 1 July 27, 2009 HT6220A/HT6221A/HT6222A Pin Assignment R 3 R 4 R 1 1 2 3 4 5 6 7 8 9 1 0 R 2 R 3 1 2 3 4 5 6 7 8 H T 6 2 2 0 A 1 6 N S O P -A R 4 R 5 R 6 D O U T V D D D 7 V S S 1 6 1 5 1 4 1 3 1 2 1 1 1 0 9 R 2 R 1 A IN C 1 C 2 C 3 C 4 C 5 R 3 R 4 D O U T V D D D 7 N C N C V S S 2 0 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 H T 6 2 2 1 A 2 0 S O P -A A IN C 1 C 2 C 3 C 4 C 5 C 6 C 7 C 8 L E D R 5 R 6 R 7 R 8 D O U T V D D D 7 N C N C V S S 9 1 0 1 1 1 2 8 7 6 5 4 3 2 1 2 4 2 3 2 2 2 1 2 0 1 9 1 8 1 7 1 6 1 5 1 4 1 3 H T 6 2 2 2 A 2 4 S O P -A R 2 R 1 A IN C 1 C 2 C 3 C 4 C 5 C 6 C 7 C 8 L E D Pin Description HT6222A Pin No. 1~6 7 8 9 10, 11 12 13 14~21 22 23~24 Pin Name R3~R8 DOUT VDD D7 NC VSS LED C8~C1 AIN R1~R2 I/O I O ¾ I ¾ ¾ O I/O I I Internal Connection CMOS IN, Pull-low NMOS OUT ¾ CMOS IN ¾ ¾ CMOS OUT Description Row control for keyboard matrix, active high Serial data output pin, with a 38kHz carrier Positive power supply, 2.0V~3.6V for normal operation Most significant data bit (D7) code setting No connection Negative power supply, ground Transmission enable indicator output CMOS IN/OUT, Pull-low Column control for keyboard matrix CMOS IN, Pull-high Pull-low CMOS IN, Pull-low Low byte address codes (8 bits) scan input Row control for keyboard matrix, active high Approximate Internal Connection Circuits www.DataSheet4U.com C M O S I N / O U T V D D C M O S IN /O U T P u ll- lo w C M O S IN P u ll- lo w C M O S IN C M O S O U T V D D N M O S O U T Rev. 1.00 2 July 27, 2009 HT6220A/HT6221A/HT6222A Absolute Maximum Ratings Supply Voltage ..............................VSS-0.3V to VSS+6V Input Voltage..............................VSS-0.3V to VDD+0.3V Storage Temperature ............................-50°C to 125°C Operating Temperature...........................-20°C to 75°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Electrical Characteristic Symbol VDD ISTB IDD IOL1 IOH2 IOL2 IOH3 IOL3 VIH1 VIL1 VIH2 VIL2 VIH3 VIL3 RPH1 RPL1 RPL2 www.DataSheet4...

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