Hardware manual

Microcomputer Technical Q&A
51
Q&A No.: QAH8S-043
Category: Bus Controller
Subject: External Bus Right Release and Refresh Control
Question
Are refresh requests held pending while the bus is released?
Answer
If a refresh request is generated while the external bus right is released, refresh control is deferred
until the external bus master cancels the bus request. Only one refresh request is held.
Applicable Products
Applicability Series Applicability Series Applicability Series
Entire H8S Series Yes H8S/2655 Yes H8S/2350
H8S/2355 Yes H8S/2357 H8S/2345
H8S/2245 H8S/2148 H8S/2144
H8S/2138 H8S/2134 H8S/2128
H8S/2124 — — — —