HD6473887 Datasheet, PDF (245/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

Table 9-14 Internal Clock Switching and TCG Operation
Clock Levels Before and After
No. Modifying Bits CKS1 and CKS0
1
Goes from low level to low level
TCG Operation
Clock before
switching
Clock after
switching
Count
clock
TCG
N
N+1
2
Goes from low level to high level
Clock before
switching
Clock before
switching
Count
clock
Write to CKS1 and CKS0
3
Goes from high level to low level
TCG
N
Clock before
switching
Clock before
switching
Count
clock
N+1
N+2
Write to CKS1 and CKS0
*
TCG
N
N+1
N+2
Write to CKS1 and CKS0
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