Hardware manual

Microcomputer Technical Q&A
49
Q&A No.: QAH8S-041
Category: Bus Controller
Subject: CS Signals after Power-On Reset
Question
What is the state of the CS signals after a power-on reset?
Answer
After a power-on resets, all the CS signals except CS0 are in the input state (in modes 1, 4, and 5).
In expanded modes with on-chip ROM disabled, vectors and starts of programs should be located
in area 0.
Applicable Products
Applicability Series Applicability Series Applicability Series
Entire H8S Series Yes H8S/2655 Yes H8S/2350
Yes H8S/2355 Yes H8S/2357 Yes H8S/2345
Yes H8S/2245 H8S/2148 H8S/2144
H8S/2138 H8S/2134 H8S/2128
H8S/2124 — — — —