Renesas H8S/2319 series Hardware Manual page 434

Table 10-5 Switching of Internal Clock and TCNT Operation
Timing of Switchover
by Means of CKS1
No. and CKS0 Bits
1 Switching from
low to low *
2 Switching from
low to high *
3 Switching from
high to low *
Rev. 5.00, 12/03, page 404 of 1088
TCNT Clock Operation
Clock before
1
switchover
Clock after
switchover
TCNT clock
TCNT
Clock before
2
switchover
Clock after
switchover
TCNT clock
TCNT
Clock before
3
switchover
Clock after
switchover
TCNT clock
TCNT
N N+1
CKS bit write
N N+1
CKS bit write
*
N N+1
CKS bit write
N+2
4
N+2