Hitachi S10mini D, Hardware Manual

Page: 40 / 132

3 NAMES AND FUNCTIONS OF PARTS
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3.3 Extension Memory Module
MEMORY LQM000
1MByte
ADDR.
PORT.
ADDR.
No. Name Function
①
Memory address switch Sets the first address of an extension memory area.
②
Protected memory address switch Sets the write-protected area.
NOTE
An extension memory module receives backup voltage from the CPU when the
CPU unit is mounted. Memory on the extension module is not backed stand-
alone. Therefore, note the following points:
•
When using the extension memory module for the first time, clear the data in
the extension memory.
(PCs edition - Perform PCs memory initialization.)
•
When the extension memory module is removed, the internal data becomes
unpredictable.