Datasheet

RL78/L12 CHAPTER 6 TIMER ARRAY UNIT
R01UH0330EJ0200 Rev.2.00 205
Dec 13, 2013
6.3.15 Noise filter enable register 1 (NFEN1)
The NFEN1 register is used to set whether the noise filter can be used for the timer input signal to each channel.
Enable the noise filter by setting the corresponding bits to 1 on the pins in need of noise removal.
When the noise filter is enabled, after synchronization with the operating clock (f
MCK) for the target channel, whether the
signal keeps the same value for two clock cycles is detected.
When the noise filter is disabled, the input signal is only synchronized with the operating clock (f
MCK) for the target
channel
Note
.
The NFEN1 register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Note For details, see 6.5.1 (2) When valid edge of input signal input from the TImn pin is selected (CCSmn =
1) and 6.5.2 Start timing of counter.
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