Table 12.3 Switching Of Internal Clock And Frc Operation - Renesas H8S/2158 User Manual

Table 12.3 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
Section 12 16-Bit Free-Running Timer (FRT)
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
CKS bit rewrite
*
N + 1
CKS bit rewrite
Rev. 3.00 Jan 25, 2006 page 313 of 872
N + 2
N + 2
REJ09B0286-0300