Renesas H8/3067 Series User Manual page 220

Section 6 Bus Controller
Table 6.10 Internal Clock Switchover and RTCNT Operation (2)
No.
CKS2 to CKS0
Write Timing
3
"High" "Low"
3
switchover*
4 "High" "High"
4
switchover*
Notes: 3. Including switchover from a high clock source to the halted state.
4. The switchover is regarded as a falling edge, causing RTCNT to increment.
Rev. 4.00 Jan 26, 2006 page 196 of 938
REJ09B0276-0400
Old clock source
New clock source
RTCNT clock
RTCNT
Old clock source
New clock source
RTCNT clock
RTCNT
RTCNT Operation
N N+1
CKS bits rewritten
N N+1
4
*
N+2
N+2
CKS bits rewritten