D12320VF25IV Datasheet, PDF (610/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 12 8-Bit Timers
Table 12.5 Switching of Internal Clock and TCNT Operation
Timing of Switchover
by Means of CKS1
No.
and CKS0 Bits
TCNT Clock Operation
1
Switching from
Clock before
low to low^*1
switchover
Clock after
switchover
TCNT clock
TCNT
N
N+1
2
Switching from
Clock before
low to high^*2
switchover
CKS bit write
Clock after
switchover
TCNT clock
TCNT
N
3
Switching from
Clock before
high to low^*3
switchover
Clock after
switchover
TCNT clock
N+1
N+2
CKS bit write
*4
TCNT
N
N+1
N+2
CKS bit write
Rev.6.00 Sep. 27, 2007 Page 578 of 1268
REJ09B0220-0600