HD64F2145 Datasheet, PDF (306/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Timing of Switchover
by Means of CKS1
No. and CKS0 Bits
3
Switching from
high to low
FRC Operation
Clock before
switchover
Clock after
switchover
*
FRC clock
4
Switching from
high to high
FRC
N
Clock before
switchover
Clock after
switchover
FRC clock
N+1
N+2
CKS bit rewrite
FRC
N
N+1
N+2
CKS bit rewrite
Note:* Generated on the assumption that the switchover is a falling edge; FRC is incremented.
11.7.5 Module Stop Mode Setting
FRT operation can be enabled or disabled using the module stop control register. The initial
setting is for FRT operation to be halted. Register access is enabled by canceling the module stop
mode. For details, refer to section 26, Power-Down Modes.
Rev. 2.0, 08/02, page 266 of 788