Datasheet

Section 10 16-Bit Free-Running Timer (FRT)
Rev. 3.00 Sep. 28, 2009 Page 209 of 710
REJ09B0384-0300
Table 10.2 Switching of Internal Clock and FRC Operation
No.
Timing of Switchover
by Means of CKS1
and CKS0 Bits FRC Operation
1 Switching from
low to low
Clock before
switchover
Clock after
switchover
FRC clock
FRC
CKS bit rewrite
N
N + 1
2 Switching from
low to high
Clock before
switchover
Clock after
switchover
FRC clock
FRC N N + 1 N + 2
CKS bit rewrite
3 Switching from
high to low
Clock before
switchover
Clock after
switchover
FRC clock
FRC
CKS bit rewrite
N N + 2
N + 1
*