7480 Datasheet, PDF (12/98 Pages) Bi technologies – 7/8 Diameter 5-Turn Wirewound Precision Potentiometer

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MITSUBISHI MICROCOMPUTERS
7480/7481 GROUP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Memory
• SFR Area
This SFR area is provided in the zero page and contains the reg-
isters for controlling I/O ports and timers.
• RAM
RAM is used for data storage and for calling subroutines, as well
as for a stack area for interrupts.
• ROM
ROM is used for storing user programs and interrupt vectors.
• Interrupt Vector Area
The interrupt vector area is used for storing vector addresses
when an interrupt is generated or at reset.
• Zero Page
This area can be accessed with 2 words when the zero page ad-
dressing mode is used.
• Special Page
This area can be accessed with 2 words when the special page
addressing mode is used.
RAM (192 bytes) for
M37480M4,
M37480M8/E8,
M37481M4,
M37481M8/E8
RAM (128 bytes) for
M37480M2,
M37481M2
RAM (256 bytes) for
M37480M8/E8,
M37481M8/E8
RAM (64 bytes) for
M37480M4,
M37481M4
000016
007F16
008016
00BF16
00C016
00FF16
010016
013F16
SFR area
ROM (16384 bytes) for
M37480M8/E8,
M37481M8/E8
ROM (8192 bytes) for
M37480M4,
M37481M4
ROM (4096 bytes) for
M37480M2,
M37481M2
01FF16
C00016
E00016
F00016
FF0016
Not used
FFE416
FFFF16
Interrupt vector area
Zero
page
Special
page
Fig. 8 Memory map
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