Datasheet

Section 12 8-Bit Timers
Rev. 6.00 Mar. 18, 2010 Page 462 of 982
REJ09B0054-0600
Table 12.4 Switching of Internal Clock and TCNT Operation
No.
Timing of Switchover by Means of
CKS1 and CKS0 Bits
TCNT Clock Operation
1 Switching from low to low
*
1
Clock before
switchover
Clock after
switchover
TCNT clock
TCNT
CKS bit rewrite
NN + 1
2 Switching from low to high
*
2
Clock before
switchover
Clock after
switchover
TCNT clock
TCNT
CKS bit rewrite
NN + 1N + 2