Renesas M16C/64A Series User Manual page 632

M16C/64A Group
26.3.4 Digital Filter
Input to the CEC pin goes into the internal circuit in synchronization with the count source. If the same
level signal is input to the CEC pin twice in a row that level is transferred to the internal circuit, when the
CFIL bit in the CECC2 register is 1 (digital filter enable). Figure 26.4 shows Digital Filter.
Count source
CEC pin input
Internal CEC input
When the CFIL bit is 0
(filter disabled)
Internal CEC input
When the CFIL bit is 1
(filter enabled)
CFIL: Bit in the CECC2 register
Figure 26.4 Digital Filter
R01UH0136EJ0210 Rev.2.10
Jul 31, 2012
Same
level
Same Same
level level
26. Consumer Electronics Control (CEC) Function
Same Same
level level
Same Same
level level
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