M16C65 Datasheet, PDF (671/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
26. Consumer Electronics Control (CEC) Function
26.3.4 Digital Filter
The 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 set to 1 (digital filter enable). Figure 26.4 shows Digital
Filter.
Count source
CEC pin input
Internal CEC input
When the CFIL bit is set
to 0 (filter disabled)
Internal CEC input
When the CFIL bit is set
to 1 (filter enabled)
Same
level
Same Same
level level
CFIL: Bit in the CECC2 register
Figure 26.4 Digital Filter
Same Same
level level
Same Same
level level
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
Page 636 of 791