D12320VF25IV Datasheet, PDF (611/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Timing of Switchover
by Means of CKS1
No.
and CKS0 Bits
TCNT Clock Operation
4
Switching from high Clock before
to high
switchover
Clock after
switchover
TCNT clock
Section 12 8-Bit Timers
TCNT
N
N+1
N+2
CKS bit write
Notes: 1. Includes switching from low to stop, and from stop to low.
2. Includes switching from stop to high.
3. Includes switching from high to stop.
4. Generated on the assumption that the switchover is a falling edge; TCNT is
incremented.
12.6.6 Interrupts and Module Stop Mode
If module stop mode is entered when an interrupt has been requested, it will not be possible to
clear the CPU interrupt source or the DMAC* or DTC activation source. Interrupts should
therefore be disabled before entering module stop mode.
Note: * The DMAC is not supported in the H8S/2321.
Rev.6.00 Sep. 27, 2007 Page 579 of 1268
REJ09B0220-0600