Datasheet

Section 13 8-Bit Timers (TMR)
Page 850 of 1384 R01UH0310EJ0500 Rev. 5.00
Sep 25, 2012
H8S/2426, H8S/2426R, H8S/2424 Group
Table 13.6 Switching of Internal Clock and TCNT Operation
No.
Timing of Switchover
by Means of Modifying
CKS1, CKS0, ICKS1,
and ICKS0 Bits TCNT Clock Operation
1 Switching from
low to low
*
1
Clock before
switchover
Clock after
switchover
TCNT clock
TCNT
CKS bit write
N N + 1
2 Switching from
low to high
*
2
Clock before
switchover
Clock after
switchover
TCNT clock
TCNT
CKS bit write
N
N + 1 N + 2
3 Switching from
high to low
*
3
Clock before
swichover
Clock after
swichover
TCNT clock
TCNT
CKS bit write
N
N + 1 N + 2
*
4