Datasheet

Table Of Contents
Section 11 8-Bit Timers (TMR)
REJ09B0140-0900 Rev. 9.00 Page 367 of 846
Sep 16, 2010
H8S/2215 Group
Table 11.5 Switching of Internal Clock and TCNT Operation
No.
Timing of Switchover
by Means of CKS1
and CKS0 Bits
TCNT Clock Operation
1 Switching from
low to low
*
1
Clock before
switchover
Clock after
switchover
TCNT clock
TCNT
CKS bit rewrite
N N + 1
2 Switching from
low to high
*
2
Clock before
switchover
Clock after
switchover
TCNT clock
TCNT
CKS bit rewrite
N N + 1 N + 2
3 Switching from
high to low
*
3
Clock before
switchover
Clock after
switchover
TCNT clock
TCNT
CKS bit rewrite
N N + 1 N + 2
*
4