Table 11.5 Switching Of Internal Clock And Tcnt Operation - Hitachi H8S/2215 Series Hardware Manual

Table 11.5 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*
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
Rev. 3.0, 10/02, page 345 of 686
N+2
4
N+2