HT6221 Holtek Semiconductor Inc., HT6221 Datasheet
HT6221
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HT6221 Summary of contents
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... Car door controllers Car alarm systems Security systems Other remote control systems The 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. ...
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... Pin Assignment Pad Assignment * The IC substrate should be connected to VDD in the PCB layout artwork. Rev. 1.50 2 Chip size (mil) 2 HT6221/HT6222 October 1, 2007 ...
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... Positive power supply, 1.8V~3.5V for normal operation Most significant data bit (D7) code setting 455kHz resonator oscillator output 455kHz resonator oscillator input Negative power supply, ground Transmission enable indicator output Low byte address codes (8 bits) scan input Pull-low Row control for keyboard matrix, active high 3 HT6221/HT6222 Unit: mil X Y 38.21 32.09 38.21 18.90 38.21 10.33 38 ...
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... OSC 3V V =2. =0. =2. =0. =2. = =3V IN 455kHz ceramic resonator 4 HT6221/HT6222 Ta=25 C Min. Typ. Max. Unit 1.8 3 3.5 V 0.1 1.0 A 200 400 A mA 2.0 4.0 50 100 1.2 2 0.6 2 1.9 3 0.8 V 1.6 3 0.6 V 1.25 3 ...
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... Functional Description Keyboard Scan The HT6221/HT6222 remain in the halt mode during the standby state (at this time, the oscillator stops, and the standby current<1 A). The HT6221 consists of 32 ac- tive keys, and the HT6222 has 64 active keys. The key- board forms of the HT6221/ HT6222 are shown below. ...
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... ROM2 (8 bits) are decided by one MASK LAYER. The current value of ROM1 and ROM2 are both 00H . The A0~A7 are set by logical OR between Rev. 1.50 HT6221/HT6222 Logic states the external switch S0~S7 and the ROM1. The A8~A15 equal some bits inverted to A0~A7, the inver- sion are decided by Logical OR between the external switch S8~S15 and the ROM2 ...
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... Values of the data codes (D0~D7) The HT6221/HT6222 contain 32 and 64 active keys, re- spectively. Each key corresponds to a data code. For tape deck recording, the HT6221/HT6222 provide three double-key functions. The double-key, single-key, and double-key operation rules are shown in Table 3, Ta- ble 4, Timing 4, Timing 5 and Timing 6. ...
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... Note: Kn can be one of K1~K64 Rev. 1.50 Invalid double-key input Valid single-key input 8 HT6221/HT6222 October 1, 2007 ...
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... 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 Note: Typical infrared diode: EL-1L2 (KODENSHI CORP.) Rev. 1.50 Valid double-key input 9 HT6221/HT6222 October 1, 2007 ...
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... Application Circuit 2 Note: Typical infrared diode: EL-1L2 (KODENSHI CORP.) Rev. 1.50 HT6221/HT6222 10 October 1, 2007 ...
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... Package Information 20-pin SOP (300mil) Outline Dimensions Symbol Rev. 1.50 Dimensions in mil Min. Nom. 394 290 14 490 HT6221/HT6222 Max. 419 300 20 510 104 October 1, 2007 ...
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... SOP (300mil) Outline Dimensions Symbol Rev. 1.50 Dimensions in mil Min. Nom. 394 290 14 590 HT6221/HT6222 Max. 419 300 20 614 104 October 1, 2007 ...
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... Spindle Hole Diameter D Key Slit Width T1 Space Between Flange T2 Reel Thickness SOP 24W Symbol Description A Reel Outer Diameter B Reel Inner Diameter C Spindle Hole Diameter D Key Slit Width T1 Space Between Flange T2 Reel Thickness Rev. 1.50 HT6221/HT6222 Dimensions in mm 330 1.0 62 1.5 13.0+0.5 0.2 2.0 0.5 24.8+0.3 0.2 30.2 0.2 Dimensions in mm 330 1.0 62 1.5 13.0+0.5 0.2 2.0 0.5 24.8+0.3 0.2 30.2 0.2 13 October 1, 2007 ...
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... Description W Carrier Tape Width P Cavity Pitch E Perforation Position F Cavity to Perforation (Width Direction) D Perforation Diameter D1 Cavity Hole Diameter P0 Perforation Pitch P1 Cavity to Perforation (Length Direction) A0 Cavity Length B0 Cavity Width K0 Cavity Depth t Carrier Tape Thickness C Cover Tape Width Rev. 1.50 HT6221/HT6222 Dimensions in mm 24.0+0.3 0.1 12.0 0.1 1.75 0.1 11.5 0.1 1.5+0.1 1.5+0.25 4.0 0.1 2.0 0.1 10.8 0.1 13.3 0.1 3.2 0.1 0.3 0.05 21.3 Dimensions in mm 24.0 0.3 12.0 0.1 1.75 0.1 11.5 0.1 1.55+0.1 1.5+0.25 4.0 0.1 2.0 0.1 10.9 0.1 15.9 0.1 3.1 0.1 ...
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... Holtek s products are not authorized for use as critical components in life support devices or systems. 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. 1.50 HT6221/HT6222 15 October 1, 2007 ...