M38B78FDH-XXXXFP View Datasheet(PDF) - MITSUBISHI ELECTRIC
Part Name
Description
Manufacturer
M38B78FDH-XXXXFP Datasheet PDF : 109 Pages
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MITSUBISHI MICROCOMPUTERS
38B7 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MEMORY
Special Function Register (SFR) Area
The special function register (SFR) area contains control registers
for I/O ports, timers and other functions.
RAM
RAM is used for data storage and for stack area of subroutine calls
and interrupts.
ROM
The first 128 bytes and the last 2 bytes of ROM are reserved for
device testing, and the other areas are user areas for storing pro-
grams.
Interrupt Vector Area
The interrupt vector area contains reset and interrupt vectors.
Zero Page
The zero page addressing mode can be used to specify memory and
register addresses in the zero page area. Access to this area with
only 2 bytes is possible in the zero page addressing mode.
Special Page
The special page addressing mode can be used to specify memory
addresses in the special page area. Access to this area with only 2
bytes is possible in the special page addressing mode.
RAM area
RAM size
(byte)
192
256
384
512
640
768
896
1024
1536
2048
ROM area
ROM size
(byte)
4096
8192
12288
16384
20480
24576
28672
32768
36864
40960
45056
49152
53248
57344
61440
Address
XXXX16
00FF16
013F16
01BF16
023F16
02BF16
033F16
03BF16
043F16
063F16
083F16
Address
YYYY16
F00016
E00016
D00016
C00016
B00016
A00016
900016
800016
700016
600016
500016
400016
300016
200016
100016
Address
ZZZZ16
F08016
E08016
D08016
C08016
B08016
A08016
908016
808016
708016
608016
508016
408016
308016
208016
108016
Fig. 8 Memory map diagram
RAM
000016
004016
010016
SFR area 1
Zero page
ROM
XXXX16
Reserved area
044016
Not used (Note)
0E0016
0EDF16
0EE016
0EFF16
0F0016
0FFF16
YYYY16
RAM area for FLD automatic display
SFR area 2
RAM area for Serial I/O
automatic transfer
Reserved ROM area
(common ROM area,128 bytes)
ZZZZ16
FF0016
FFDC16
Interrupt vector area
FFFE16
FFFF16 Reserved ROM area
Special page
Note: When 1024 bytes or more are used as RAM area, this area can be used.
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