W78E054D Datasheet, PDF (15/89 Pages) List of Unclassifed Manufacturers – 8-bit microcontroller

W78E054D/W78E052D Data Sheet
FFH
Indirect
RAM
Addressing
80H
7FH
Direct
&
Indirect
RAM
00H
Addressing
SFR
Direct
Addressing
Only
256 bytes RAM and SFR Data Memory Space
Figure 8–2 W78E054D/W78E052D RAM and SFR Memory Map
Since the scratch-pad RAM is only 256bytes it can be used only when data contents are small. There
are several other special purpose areas within the scratch-pad RAM. These are illustrated in next fig-
ure.
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Publication Release Date: Jun 9, 2015
Revision A13