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HT6221 Datasheet(PDF) 3 Page - ARTSCHIP ELECTRONICS CO.,LMITED.

No. de pieza HT6221
Descripción Electrónicos  Multi-Purpose Encoders
PDF  11 Pages
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Fabricante Electrónico  ARTSCHIP [ARTSCHIP ELECTRONICS CO.,LMITED.]
Página de inicio  http://www.artschip.com/
Logo ARTSCHIP - ARTSCHIP ELECTRONICS CO.,LMITED.

HT6221 Datasheet(HTML) 3 Page - ARTSCHIP ELECTRONICS CO.,LMITED.

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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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