Decoder For Remote Controller
DESCRIPTION
The UTC UT912D of CMOS LSIs for remote control system
applications are paired with UTC UT912E (refer to the
encoder/decoder cross reference table) and is capable of
decoding information which consists of N address bits and 12-N
data bits. For proper operation, a pair of encoder/decoder with the
same number of addresses and data format should be chosen.
The UTC UT912D also is arranged to provide 8 address bits and 4 data bits.
The decoders receive serial addresses and data from a
programmed UTC UT912E of encoders that are transmitted
together with the header bits by a RF or an infrared transmission
medium upon receipt of a trigger signal. If no error or unmatched
codes are found, the input data codes are decoded and then
transferred to the output pins. The VT pin also goes high to indicate a valid transmission.
FEATURES
* Pair with UTC UT912E
* Operating voltage: 2.4V ~ 12V
* Low power and high noise immunity CMOS technology
* Low standby current
* Built-in oscillator needs only 5% resistor
* Binary address setting
* Received codes are checked 3 times
* Capable of decoding 12 bits of information
* Address/Data number combination: 8 address bits and 4 data bits
* Vaild transmission indicator
* Minimal external components |
