HT6230
Infrared Remote Encoder
Features
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·
·
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Operating voltage: 2.4V~5.2V
32 system codes, each system with
64 command codes
Programmable transmission codes
Biphase transmission method
Generated modulation output data
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·
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(1/2 system frequency and 1/4 duty cycle)
Single pin oscillator
429kHz resonator system clock
Test pins available
28-pin SOP package
Applications
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Televisions and video cassette recorder
controllers
Garage door controllers
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Car door controllers
Security systems
Other remote control systems
General Description
The HT6230 is designed as infrared remote en-
coder, usually applied to TV systems. A total of
2048 different commands can be generated and
arranged into 32 systems where each system
contains 64 different commands. There are 96
keys and to each key is assigned one program-
mable code. The code is programmable by mask
option. Legal and illegal key operation can be
distinguished.
Block Diagram
R C
O S C
3
´
2 1
2
1 3
O S C
D iv id e r
P a r a lle l
T o S e r ia l
C o n v e rte r
T T 1
T T 2
T e s t
M o d e
R e s e t
A c tio n
G e n e ra to r
O u tp u t
S ta g e
C O D E
M S
M o d e
S e le c tio n
C o n tro l
U n it
Z -k e y
P A L
M o d u la tio n
O u tp u t
S ta g e
M C O D E
Z IN 3
Z IN 0
X IN 7
Z -k e y
E n c o d e r
D R S 7
C o m m a n d
A n d
S y s te m
C o d e L a tc h
Z -D R S
P A L
X -D R S
P A L
K e y S c a n
D r iv e r
D e c o d e r
D R S 0
X -k e y
E n c o d e r
X IN 0
X -k e y
P A L
V S S
V D D
1
April 19, 2000
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
