D12320VF25V Datasheet, PDF (446/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 10 8-Bit Timers
Table 10.5 Switching of Internal Clock and TCNT Operation
Timing of Switchover
by Means of CKS1
No.
and CKS0 Bits
TCNT Clock Operation
1
Switching from
low to low^*1
Clock before
switchover
Clock after
switchover
TCNT clock
TCNT
N
N+1
2
Switching from
low to high^*2
Clock before
switchover
CKS bit write
Clock after
switchover
TCNT clock
TCNT
N
3
Switching from
high to low^*3
Clock before
switchover
Clock after
switchover
TCNT clock
N+1
N+2
CKS bit write
*4
TCNT
N
N+1
N+2
CKS bit write
Rev.7.00 Feb. 14, 2007 page 412 of 1108
REJ09B0089-0700