H83834U Datasheet, PDF (249/497 Pages) Renesas Technology Corp – Single-Chip Microcomputer

Table 9-6-4 Internal Clock Switching and TCG Operation
Clock Level Before
and After Modifying
No. Bits CKS1 and CKS0
1 Goes from low level to
low level
TCG Operation
Clock before
switching
Clock after
switching
Count clock
2 Goes from low level to
high level
TCG
Clock before
switching
Clock after
switching
Count clock
N
CKS bits modified
N +1
TCG
N
3 Goes from high level to
low level
Clock before
switching
Clock after
switching
Count clock
N +1
N +2
CKS bits modified
*
TCG
N
4 Goes from high level to
high level
Clock before
switching
N +1
CKS bits modified
N +2
Clock after
switching
Count clock
TCG
N
N +1
N +2
CKS bits modified
Note: * The switchover is seen as a falling edge of the clock pulse, and TCG is incremented.
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