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HT6221 数据表(PDF) 3 Page - ARTSCHIP ELECTRONICS CO.,LMITED. |
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HT6221 数据表(HTML) 3 Page - ARTSCHIP ELECTRONICS CO.,LMITED. |
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3 / 11 page ![]() HT6221/HT6222 Multi-Purpose Encoders www.artschip.com 3 Pin Description HT6222 Pin No. Pin Name I/O Internal Connection Description 1~6 R3~R8 I CMOS IN Pull-Low Row control for keyboard matrix, active high 7 DOUT O CMOS OUT Serial data output pin, with a 38kHz carrier 8 VDD - - Positive power supply, 1.8V ~ 3.5V for normal operation 9 D7 I CMOS IN Most significant data bit (D7) code setting 10 X2 O OSCILLATOR 455kHz resonator oscillator output 11 X1 I OSCILLATOR 455kHz resonator oscillator input 12 VSS - - Negative power supply 13 LED O CMOS OUT Transmission enable indicator output 14~21 C8~C1 I/O CMOS IN/OUT Pull-low Column control for keyboard matrix 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 Approximate internal connection circuits |
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