HT6P20 Datasheet, PDF (1/9 Pages) Holtek Semiconductor Inc – 224 OTP Encoder

HT6P20
2²⁴ OTP Encoder
Features
· Operating voltage: 2V~12V
· Low power consumption
· Built-in oscillator needs only 5% resistor
· 0/2/4/8 data selectable
· 2²⁴ maximum address and data codes
· Easy interface with an RF or IR medium
Applications
· Burglar alarm system
· Smoke and fire alarm system
· Garage door controllers
· Car door controllers
General Description
The HT6P20 is a CMOS LSI encoder designed
for remote control system applications. It en-
codes 24 bits of information and then serially
transmits it via the DOUT pin upon receipt of
transmission enable (DATA pins: D0~D7) sig-
nals. The combination of address and data bits
of the HT6P20 is designed using one time pro-
Block Diagram
· One time programmable process
· Data active: D0~D7
· Minimal external components
· HT6P20/A/B: 8-pin DIP/NSOP package
HT6P20/D: 16-pin DIP/NSOP package
· Security system
· Cordless telephones
· Other remote control systems
grammable process. In addition, the chip offers
various packaging for flexible combination of
programmable address/data so as to meet vari-
ous applications. Its programmable ad-
dress/data is transmitted together with the
anti-code bits via RF or infrared transmission
medium upon receipt of a trigger signal.
O SC1
O SC2
VPP
S IO
O s c illa to r
P r o g r a m m in g
C ir c u it
C o n tr o l U n it
A d d re s s
C o u n te r
M ix e r &
D r iv e r
D a ta L a tc h
DOUT
PG M
D0
D7
Note: Address/Data numbers are available in various combinations, refer to the functional descrip
tion.
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May 2, 2000