UPD61P34BGS NEC, UPD61P34BGS Datasheet - Page 28

• Manufacturer Part Number: UPD61P34BGS
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
• Manufacturer: NEC

REM output
APPENDIX B. EXAMPLE OF REMOTE-CONTROL TRANSMISSION FORMAT
28
REM output
Caution When using the NEC transmission format, please apply for a custom code at NEC.
(1) REM output waveform (From <2> on, the output is made only when the key is kept pressed.)
REM output
Remark If the key is repeatedly pressed, the power consumption of the infrared light-emitting diode (LED) can
(2) Enlarged waveform of <1>
(3) Enlarged waveform of <3>
REM output
(4) Enlarged waveform of <2>
be reduced by sending the reader code and the stop bit from the second time.
(in the case of NEC transmission format in command one-shot transmission mode)
Leader code
9 ms
13.5 ms
58.5 to 76.5 ms
< 1 >
4.5 ms
< 3 >
108 ms
9 ms
9 ms
Leader code
Custom code
11.25 ms
8 bits
13.5 ms
Data Sheet U13595EJ2V0DS00
18 to 36 ms
Custom code'
58.5 to 76.5 ms
< 2 >
2.25 ms
8 bits
4.5 ms
108 ms
1.125 ms
Data code
0.56 ms
Stop Bit
8 bits
0.56 ms
0
2.25 ms
1
27 ms
Data code
1
8 bits
0
PD61P34B
0
Stop Bit
1 bit