HT6221/HT6222 HT6221 HT6222 HT6221/

Multi-Purpose Encoders Features · Operating voltage: 1.8V~3.5V · Three double-active keys · DOUT with 38kHz

HT6221/HT6222 HT6221/HT6222 Multi-Purpose Encoders Features · Operating voltage: 1.8V~3.5V · Three double-active keys · DOUT with 38kHz carrier for IR medium · Maximum active keys · Low standby current - HT6221 HT6221: 32 keys - HT6222 HT6222: 64 keys · Minimum transmission word: one word · Low power and high noise immunity CMOS · 455kHz ceramic resonator or crystal technology · 16-bit address codes · HT6221 HT6221: 20-pin SOP package · 8-bit data codes HT6222 HT6222: 24-pin SOP package · PPM code method Applications · Television and video cassette recorder controllers · Car door controllers · Burglar alarm systems · Car alarm systems · Smoke and fire alarm systems · Security systems · Garage door controllers · Other remote control systems General Description The HT6221/HT6222 HT6221/HT6222 contain 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. The HT6221/HT6222 HT6221/HT6222 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. Block Diagram X 2 X 1 O s c illa to r D iv id e r R 8 Rev. 1.40 K e y b o a rd M a tr ix & G a te C ir c u it A IN ¸ 2 4 C o u n te r & 1 o f 2 4 D e c o d e r D a ta R O M & R e g is te r s C 1 R 1 C 8 D a ta S e le c t & B u ffe r D O U T L E D S y n c . C ir c u it B in a r y D e te c to r V D D D 7 1 V S S March 4, 2003 HT6221/HT6222 HT6221/HT6222 Pin Assignment R 3 1 2 4 R 2 R 4 2 2 3 R 1 R 1 1 2 0 A IN R 5 3 2 2 A IN R 2 2 1 9 C 1 R 6 4 2 1 C 1 R 3 3 1 8 C 2 R 7 5 2 0 C 2 R 4 4 1 7 C 3 R 8 6 1 9 C 3 D O U T 5 1 6 C 4 D O U T 7 1 8 C 4 V D D 6 1 5 C 5 V D D 8 1 7 C 5 D 7 7 1 4 C 6 D 7 9 1 6 C 6 X 2 8 1 3 C 7 X 2 1 0 1 5 C 7 X 1 9 1 2 C 8 X 1 1 1 1 4 C 8 1 0 1 1 L E D V S S 1 2 1 3 L E D V S S H T 6 2 2 1 2 0 S O P -A H T 6 2 2 2 2 4 S O P -A Pad Assignment R 4 R 2 R 1 A IN C 1 2 1 2 0 1 9 3 R 8 2 2 2 R 7 2 3 1 R 6 R 3 2 4 R 5 4 1 8 1 7 1 4 C 6 1 1 L E D 1 2 1 3 C 7 C 8 1 0 V S S 8 9 X 1 7 C 5 6 D 7 X 2 C 4 1 5 V D D C 3 1 6 (0 ,0 ) 5 D O U T C 2 Chip size: 90 ´ 85 (mil)2 * The IC substrate should be connected to VDD in the PCB layout artwork. Rev. 1.40 2 March 4, 2003 HT6221/HT6222 HT6221/HT6222 Pad Coordinates Unit: mil Pad No. X Y Pad No. X Y 1 -38.44 28.57 13 38.21 -32.09 2 -38.44 24.06 14 38.21 -18.90 3 -38.44 19.55 15 38.21 -10.33 4 -38.44 9.91 16 38.21 2.87 5 -38.44 1.95 17 38.21 11.13 6 -38.44 -22.72 18 38.21 24.33 7 -38.44 -30.03 19 31.14 34.20 8 -37.83 -34.54 20 21.80 34.19 9 -20.31 -34.54 21 -12.62 34.19 10 -15.72 -34.54 22 -22.26 34.19 11 -11.21 -34.54 23 -26.77 34.19 12 27.27 -34.54 24 -36.41 34.19 Pin Description HT6222 HT6222 Pin No. I/O Internal Connection 1~6 Pin Name R3~R8 I CMOS IN, Pull-low Description 7 DOUT O CMOS OUT 8 VDD ¾ ¾ 9 D7 I CMOS IN 10 X2 O OSCILLATOR 455kHz resonator oscillator output 11 X1 I OSCILLATOR 455kHz resonator oscillator input 12 VSS ¾ ¾ 13 LED O CMOS OUT 14~21 C8~C1 I/O 22 AIN I CMOS IN, Pull-high Pull-low Low byte address codes (8 bits) scan input 23~24 R1~R2 I CMOS IN, Pull-low Row control for keyboard matrix, active high Row control for keyboard matrix, active high Serial data output pin, with a 38kHz carrier Positive power supply, 1.8V~3.5V for normal operation Most significant data bit (D7) code setting Negative power supply, ground Transmission enable indicator output CMOS IN/OUT, Pull-low Column control for keyboard matrix Approximate Internal Connection Circuits C M O S IN /O U T V C M O S IN /O U T P u ll- lo w D D 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 O S C IL L A T O R X 2 X 1 1 0 M W E N Rev. 1.40 3 March 4, 2003 HT6221/HT6222 HT6221/HT6222 Absolute Maximum Ratings Supply Voltage .VSS-0.3V to VSS+6V Storage Temperature .-50°C to 125°C Input Voltage.VSS-0.3V to VDD+0.3V 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 Parameter Ta=25°C Test Conditions VDD Conditions ¾ Min. Typ. Max. Unit 1.8 3 3.5 V VDD Operating Voltage ¾ ISTB Standby Current 3V Oscillator stops ¾ 0.1 1.0 mA IDD Operating Current 3V fOSC=455kHz, no load ¾ 200 400 mA IOH1 Output Source Current for DOUT 3V VO=2.7V -2.0 -4.0 ¾ mA IOL1 Output Sink Current for DOUT 3V VO=0.3V 50 100 ¾ mA IOH2 Output Source Current for LED 3V VO=2.7V -10 -60 ¾ mA IOL2 Output Sink Current for LED 3V VO=0.3V 1.2 2.0 ¾ mA IOH3 Output Source Current for C1~C8 3V VO=2.7V -0.6 -2.0 ¾ mA IOL3 Output Sink Current for C1~C8 3V VO=0.3V 10 30 ¾ mA VIH1 Input High Voltage for R1~R8 3V ¾ 1.9 ¾ 3.0 V VIL1 Input Low Voltage for R1~R8 3V ¾ 0 ¾ 0.8 V VIH2 Input High Voltage for C1~C8 3V ¾ 1.1 ¾ 3.0 V VIL2 Input Low Voltage for C1~C8 3V ¾ 0 ¾ 0.6 V VIH3 Input High Voltage for AIN 3V ¾ 1.25 ¾ 3.0 V VIL3 Input Low Voltage for AIN 3V ¾ 0 ¾ 0.6 V RPH1 Input Pull-high Resistance for AIN 3V VIN=0V 100 200 400 kW RPL1 Input Pull-low Resistance for AIN 3V VIN=3V 70 150 250 kW 3V VIN=3V 120 200 320 kW 300 500 1500 kW ¾ 455 ¾ kHz RPL2 Input Pull-low Resistance for R1~R8 RPL3 Input Pull-low Resistance for C1~C8 3V VIN=3V fOSC System Frequency ¾ 455kHz ceramic resonator Rev. 1.40 4 March 4, 2003 HT6221/HT6222 HT6221/HT6222 Functional Description Keyboard Scan When one of the keys (32 or 64 keys) is triggered for over 36ms, the oscillator is enabled and the chip is activated. If the key is pressed and held for 108ms or less, the 108ms transmission codes are enabled and comprised of a header code (9ms), an off code (4.5ms), low byte address codes (9ms~18ms), high byte address codes (9ms~18ms), 8-bit data codes (9ms~18ms), and the inverse codes of the 8-bit data codes (18ms~9ms). After the pressed key is held for 108ms, if the key is still held down, the transmission codes turn out to be a composition of header (9ms) and off codes (2.5ms) only. The HT6221/HT6222 HT6221/HT6222 remain in the halt mode during the standby state (at this time, the oscillator stops, and the standby current 1 0 8 m s D O U T K n c o d e tr a n s m is s io n (a ) K n In p u t K n t < 1 0 8 m s 3 6 m s D O U T 1 0 8 m s K n c o d e tr a n s m is s io n (b ) Note: Kn can be one of K1~K64 Valid single-key input Rev. 1.40 8 March 4, 2003 HT6221/HT6222 HT6221/HT6222 K 2 1 In p u t K m K 2 1 In p u t K m 3 6 m s 3 6 m s t > 1 2 6 m s K 2 1 c o d e tr a n s m is s io n D O U T 1 0 8 m s ( m in .) K 2 1 + K m c o d e tr a n s m is s io n Note: Km can be one of K22~K24 Valid double-key input DOUT and LED After the transmission codes are sent, the DOUT pin generates transmission codes with a carrier, and the LED goes low to drive a transmission indicator. Application Circuits Application Circuit 1 V D D 1 .8 V ~ 3 .5 V In fra re d 4 7 m F /1 6 V 3 3 0 W 4 7 W 1 0 0 p F 1 0 0 p F 1 k W L E D 4 5 5 k H z c e r a m ic r e s o n a to r 9 8 X 1 7 5 6 1 1 X 2 L E D D O U T V D D H T 6 2 2 1 D 7 C 1 C 2 1 9 5 1 k W ´ 8 C 3 1 8 C 4 1 7 C 5 1 6 C 6 1 5 V S S C 7 1 4 C 8 1 3 R 1 1 2 K 1 K 5 K 9 K 1 3 K 1 7 K 2 1 K 2 5 K 6 K 1 0 K 1 4 K 1 8 K 2 2 K 2 6 K 7 K 1 1 K 1 5 K 1 9 K 2 3 K 2 7 K 8 K 1 2 K 1 6 K 2 0 K 2 4 K 2 8 A IN 4 2 0 K 3 1 K 4 R 4 3 K 3 0 K 3 R 3 2 1 0 K 2 9 K 2 R 2 1 8 0 5 0 K 3 2 1 N 4 1 4 8 ´ 8 Note: Typical infrared diode: EL-1L2 (KODENSHI CORP.) Rev. 1.40 9 March 4, 2003 HT6221/HT6222 HT6221/HT6222 Application Circuit 2 V D D 1 .8 V ~ 3 .5 V In fra re d 4 7 m F /1 6 V 3 3 0 W 4 7 W 1 0 0 p F 1 0 0 p F 1 k W 4 5 5 k H z c e r a m ic r e s o n a to r 1 0 1 1 X 1 9 1 3 7 8 L E D X 2 8 0 5 0 V D D D O U T H T 6 2 2 2 D 7 C 1 C 2 2 1 5 1 k W ´ 8 C 3 2 0 C 4 1 9 C 5 1 8 C 6 1 7 C 7 1 6 C 8 1 5 R 1 1 4 K 1 K 5 K 9 K 1 3 K 1 7 K 2 1 K 2 5 K 6 K 1 0 K 1 4 K 1 8 K 2 2 K 2 6 K 7 K 1 1 K 1 5 K 1 9 K 2 3 K 2 7 R 3 2 4 R 4 1 R 5 2 R 6 3 R 7 4 R 8 5 A IN 6 2 2 K 3 0 K 3 R 2 2 3 1 2 K 2 9 K 2 V S S K 3 1 K 4 K 8 K 1 2 K 1 6 K 2 0 K 2 4 K 2 8 K 3 2 K 3 3 K 3 7 K 4 1 K 4 5 K 4 9 K 5 3 K 5 7 K 6 1 K 3 4 K 3 8 K 4 2 K 4 6 K 5 0 K 5 4 K 5 8 K 6 2 K 3 5 K 3 9 K 4 3 K 4 7 K 5 1 K 5 5 K 5 9 K 6 3 K 3 6 K 4 0 K 4 4 K 4 8 K 5 2 K 5 6 K 6 0 K 6 4 1 N 4 1 4 8 ´ 8 Note: Typical infrared diode: EL-1L2 (KODENSHI CORP.) Rev. 1.40 10 March 4, 2003 HT6221/HT6222 HT6221/HT6222 Package Information 20-pin SOP (300mil) Outline Dimensions 1 1 2 0 A B 1 1 0 C C ' G H D E Symbol a F Dimensions in mil Min. Nom. Max. A 394 ¾ 419 B ¾ 300 14 ¾ 20 C¢ 490 ¾ 510 D 92 ¾ 104 E ¾ 50 ¾ F 4 ¾ ¾ G 32 ¾ 38 H 4 ¾ 12 a Rev. 1.40 290 C 0° ¾ 10° 11 March 4, 2003 HT6221/HT6222 HT6221/HT6222 24-pin SOP (300mil) Outline Dimensions 1 3 2 4 A B 1 2 1 C C ' G H D E Symbol a F Dimensions in mil Min. Nom. Max. A 394 ¾ 419 B ¾ 300 14 ¾ 20 C¢ 590 ¾ 614 D 92 ¾ 104 E ¾ 50 ¾ F 4 ¾ ¾ G 32 ¾ 38 H 4 ¾ 12 a Rev. 1.40 290 C 0° ¾ 10° 12 March 4, 2003 HT6221/HT6222 HT6221/HT6222 Product Tape and Reel Specifications Reel Dimensions D T 2 A C B T 1 SOP 20W Symbol Description Dimensions in mm A Reel Outer Diameter 330±1.0 B Reel Inner Diameter 62±1.5 C Spindle Hole Diameter 13.0+0.5 -0.2 D Key Slit Width 2.0±0.5 T1 Space Between Flange 24.8+0.3 -0.2 T2 Reel Thickness 30.2±0.2 SOP 24W Symbol Description A Reel Outer Diameter B Dimensions in mm Reel Inner Diameter 330±1.0 62±1.5 13.0+0.5 -0.2 C Spindle Hole Diameter D Key Slit Width 2.0±0.5 T1 Space Between Flange 24.8+0.3 -0.2 T2 Reel Thickness 30.2±0.2 Rev. 1.40 13 March 4, 2003 HT6221/HT6222 HT6221/HT6222 Carrier Tape Dimensions P 0 D P 1 t E F W C D 1 B 0 P K 0 A 0 SOP 20W Symbol W Description Dimensions in mm Carrier Tape Width 24.0+0.3 -0.1 12.0±0.1 P Cavity Pitch E Perforation Position 1.75±0.1 F Cavity to Perforation (Width Direction) 11.5±0.1 D Perforation Diameter 1.5+0.1 D1 Cavity Hole Diameter 1.5+0.25 P0 Perforation Pitch 4.0±0.1 P1 Cavity to Perforation (Length Direction) 2.0±0.1 A0 Cavity Length 10.8±0.1 B0 Cavity Width 13.3±0.1 K0 Cavity Depth 3.2±0.1 t Carrier Tape Thickness 0.3±0.05 C Cover Tape Width 21.3 SOP 24W Symbol Description Dimensions in mm W Carrier Tape Width P Cavity Pitch 12.0±0.1 E Perforation Position 1.75±0.1 F Cavity to Perforation (Width Direction) 11.5±0.1 D Perforation Diameter 1.55+0.1 D1 Cavity Hole Diameter 1.5+0.25 24.0±0.3 P0 Perforation Pitch 4.0±0.1 P1 Cavity to Perforation (Length Direction) 2.0±0.1 A0 Cavity Length 10.9±0.1 B0 Cavity Width 15.9±0.1 K0 Cavity Depth t C 3.1±0.1 Carrier Tape Thickness Cover Tape Width Rev. 1.40 0.35±0.05 21.3 14 March 4, 2003 HT6221/HT6222 HT6221/HT6222 Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Sales Office) 11F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Semiconductor (Shanghai) Inc. 7th Floor, Building 2, No.889, Yi Shan Rd., Shanghai, China Tel: 021-6485-5560 Fax: 021-6485-0313 http://www.holtek.com.cn Holtek Semiconductor (Hong Kong) Ltd. RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Holmate Semiconductor, Inc. 48531 Warm Springs Boulevard, Suite 413, Fremont, CA 94539 Tel: 510-252-9880 Fax: 510-252-9885 http://www.holmate.com Copyright Ó 2003 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.40 15 March 4, 2003