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AN4099 Datasheet(PDF) 22 Page - STMicroelectronics

Part # AN4099
Description  Implementing transmitters and receivers for infrared remote control protocols using STM32F0xx and STM32F3xx microcontrollers
PDF  39 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4099 Datasheet(HTML) 22 Page - STMicroelectronics

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Infrared receiver
AN4099
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Doc ID 023110 Rev 2
Figure 19.
Bit determination by the falling edge: high pulse
●
If the high pulse duration is equal to T and the last bit determined is "0" => the actual bit
is Nan (no bit: this bit is determined at the next rising edge).
●
If the high pulse duration is equal to 2T and the last bit determined is "0" => the actual
bit is logic1.
●
If the high pulse duration is equal to T and the last bit determined is "1" => the actual bit
is logic1.
●
If the high pulse duration is equal to 2T and the last bit determined is "1" => the actual
bit is Inv (invalid case: this case cannot be released).
ai18535
T
00
Last bit : 0
Actual bit: Nan
1
0
Last bit : 0
Actual bit: 1
2T
T
2T
0
1
1
1
Last bit : 1
Actual bit: 1
Last bit : 1
Actual bit: Inv
1



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