HD6475328-CP10 Datasheet, PDF (222/459 Pages) Hitachi Semiconductor – original Hitachi CMOS microcomputer unit (MCU)

Table 10-5 Effect of Changing Internal Clock Sources (cont)
No. Description
Timing Chart
4
High → High:
CKS1 and CKS0 are
rewritten while both
Old clock
source
clock sources are High.
New clock
source
FRC clock
pulse
FRC
N
N+1
N+2
CKS rewrite
205