HT6222 datasheet(3/11 Pages) ARTSCHIP

Numer części	HT6222

Szczegółowy opis	Multi-Purpose Encoders

PDF	11 Pages

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Producent	ARTSCHIP [ARTSCHIP ELECTRONICS CO.,LMITED.]

Strona internetowa	http://www.artschip.com/

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HT6221/HT6222

Multi-Purpose Encoders

www.artschip.com

Pin Description

HT6222

Pin No.

Pin Name

I/O

Internal

Connection

Description

1~6

R3~R8

CMOS IN

Pull-Low

Row control for keyboard matrix, active high

DOUT

CMOS OUT

Serial data output pin, with a 38kHz carrier

VDD

Positive power supply, 1.8V ~ 3.5V for normal

operation

CMOS IN

Most significant data bit (D7) code setting

OSCILLATOR

455kHz resonator oscillator output

OSCILLATOR

455kHz resonator oscillator input

VSS

Negative power supply

LED

CMOS OUT

Transmission enable indicator output

14~21

C8~C1

I/O

CMOS IN/OUT

Pull-low

Column control for keyboard matrix

AIN

CMOS IN

Pull-high

Pull-Low

Low byte address codes (8 bits) scan input

23~24

R1~R2

CMOS IN

Pull-Low

Row control for keyboard matrix, active high

Approximate internal connection circuits

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