Datasheet

Section 12 8-Bit Timer (TMR)
Rev. 3.00 Mar 21, 2006 page 314 of 788
REJ09B0300-0300
Table 12.6 Switching of Internal Clocks and TCNT Operation
No.
Timing of Switchover
by Means of CKS1
and CKS0 Bits TCNT Clock Operation
1 Clock switching from low
to low level
*
1
Clock before
switchover
Clock after
switchover
TCNT
clock
TCNT
CKS bit rewrite
N N + 1
2 Clock switching from low
to high level
*
2
Clock before
switchover
Clock after
switchover
TCNT
clock
TCNT
CKS bit rewrite
NN + 1N + 2
3 Clock switching from high
to low level
*
3
Clock before
switchover
Clock after
switchover
TCNT
clock
TCNT
CKS bit rewrite
NN + 1 N + 2
*
4