HD6473032F16 Datasheet, PDF (188/847 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Section 7 Refresh Controller
When a refresh request occurs in the refresh request pending state, the refresh controller acquires
the bus right, then executes a refresh cycle. If another refresh request occurs during execution of
the refresh cycle, it is ignored.
Exit from reset or standby mode
Refresh
request*
Refresh
request*
Refresh request
Refresh request pending state
Refresh request
Requesting bus right
End of refresh
cycle*
Bus granted
Executing refresh cycle
Note: * A refresh request is ignored if it occurs while the refresh controller is requesting the
bus right or executing a refresh cycle.
Figure 7.3 State Transitions for Refresh Cycle Execution
Rev. 3.00 Mar 21, 2006 page 158 of 814
REJ09B0302-0300