Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 7 16-BIT TIMER/EVENT COUNTER AA (TAA)
R01UH0042EJ0500 Rev.5.00 Page 233 of 1513
Aug 12, 2011
A timing example of noise elimination performed by the timer AA input pin digital filter is shown Figure 7-2.
Figure 7-2. Example of Digital Noise Elimination Timing
Noise elimination clock
Input signal
Internal signal
3 clocks
Sampling
3 times
3 clocks 1 clock 1 clock 2 clocks 2 clocks
Sampling
3 times
Remark If there are two or fewer noise elimination clocks while the TIAAn0 or TIAAn1 input signal is high
level (or low level), that input signal is eliminated as noise. If it is sampled three times or more,
the edge is detected as a valid input (n = 0 to 3, 5).