Table 10.3 Switching Of Internal Clock And Frc Operation - Renesas H8S/2437 Hardware Manual

Table 10.3 Switching of Internal Clock and FRC 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
FRC Operation
Clock before
switchover
Clock after
switchover
FRC clock
FRC N
CKS bit rewrite
Clock before
switchover
Clock after
switchover
FRC clock
FRC N
Clock before
switchover
Clock after
switchover
FRC clock
FRC N
N + 1
N + 1 N + 2
CKS bit rewrite
*
N + 1 N + 2
CKS bit rewrite
Rev. 1.00, 09/03, page 265 of 704