Mitsubishi microcomputers
M16C / 62 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Processor Mode
30
Figure 1.10.2 shows the memory maps and the chip selection areas effected by PM13 (the internal re-
served area expansion bit) in each processor mode for the product having an internal RAM of more than
15K bytes and a ROM of more than 192K bytes.
After reset
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
SFR area
(1K bytes)
Internal RAM area
AAAA
Int(192K bytes)
AAAA
CFFFF
16
AAAA
AAAA
28000
16
AAAA
AAAA
Internal RAM area
Internal reserved area expansion bit="0"
SFR area
(1K bytes)
Memory expansion
mode
Microprocessor
mode
After reset
AAAA
AAAA
AAAA
AAAA
External area
AAAA
AAAA
AAAA
SFR area
(1K bytes)
Internal RAM area
AAAA
Internal ROM area
(192K bytes)
AAAA
CFFFF
16
AAAA
External area
AAAA
28000
16
AAAA
AAAA
Internal RAM area
Internal reserved area expansion bit="0"
SFR area
(1K bytes)
Memory expansion
mode
Microprocessor
mode
After reset
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
SFR area
(1K bytes)
Internal RAM area
External area
00000
16
00400
16
FFFFF
16
D0000
16
08000
16
AAAA
Int(192K bytes)
AAAA
CFFFF
16
AAAA
30000
16
AAAA
28000
16
AAAA
AAAA
Internal RAM area
External area
CS3
(16K bytes)
CS2
(128K bytes)
CS1
(32K bytes)
CS0
Memory expansion mode
: 640K bytes
04000
16
(1)Normal mode
Internal reserved area expansion bit="0"
SFR area
(1K bytes)
AAAAA
AAAAA
External area
SFR area
(1K bytes)
00000
16
00400
16
FFFFF
16
16
AAAAAAAAA
AAAAAAAAA
30000
16
External area
AAAAAAAAA
28000
16
AAAAAAAAA
Int(20K bytes)
Internal ROM area
(256K bytes)
CS3
(8K bytes)
CS2
(128K bytes)
CS1
(32K bytes)
CS0
Memory expansion mode
: 576K bytes
05400
16
08000
16
Internal reserved area expansion bit="1"
SFR area
After reset, and set the
I
nternal reserved area expansion bit to "1"
C0000
16
Note: The reset vector lies in an area between D0000
16
and FFFFB
16
.
00000
16
00400
16
FFFFF
16
D0000
16
08000
16
CS3
(16K bytes)
CS2
(128K bytes)
CS1
(32K bytes)
CS0
Memory expansion mode
: 816K bytes
Microprocessor mode
: 1008K bytes
30000
16
04000
16
(2)Expansion mode 1
00000
16
00400
16
FFFFF
16
C0000
16
CS3
(8K bytes)
CS2
(128K bytes)
CS1
(32K bytes)
CS0
Memory expansion mode
: 744K bytes
Microprocessor mode
: 1000K bytes
28000
16
30000
16
05400
16
08000
16
BFFFF
16
176K
bytes
= the extent of
memory
168K
bytes
= the extent of
memory
expanded
(2)Expansion mode 2
00000
16
00400
16
FFFFF
16
D0000
16
08000
16
CS3
(16K bytes)
CS2
(128K bytes)
CS1
(96K bytes)
CS0
Memory expansion mode
: 512K bytes x 7banks + 256K bytes
Microprocessor mode
: 512K bytes x 8banks
40000
04000
16
00000
16
00400
16
FFFFF
16
08000
16
CS3
(8K bytes)
CS2
(128K bytes)
CS1
(96K bytes)
CS0
Memory expansion mode
: 512K bytes x 7banks + 256K bytes
28000
16
40000
C0000
16
05400
16
06000
16
Memory expansion
mode
Microprocessor
mode
Memory expansion
mode
Microprocessor
mode
Int(20K bytes)
Internal reserved area
AAAAA
AAAAA
Internal reserved area
SFR area
AAAAAAAAA
AAAAAAAAA
AAAAAAAAA
AAAAAAAAA
AAAAAAAAA
Internal reserved area
Internal RAM area
Internal ROM area
(256K bytes)
Internal reserved area expansion bit="1"
SFR area
(1K bytes)
Note: The reset vector lies in an area between D0000
16
and FFFFB
16
.
Memory expansion
mode
Microprocessor
mode
Internal RAM area
AAAAA
AAAAA
Internal reserved area
SFR area
(1K bytes)
AAAAAAAAA
AAAAAAAAA
AAAAAAAAA
AAAAAAAAA
AAAAAAAAA
Internal reserved area
Internal RAM area
Internal ROM area
(256K bytes)
Internal reserved area expansion bit="1"
SFR area
(1K bytes)
Note: The reset vector lies in an area between D0000
16
and FFFFB
16
.
Memory expansion
mode
Microprocessor
mode
Internal RAM area
Internal reserved area
After reset, and set the
I
nternal reserved area expansion bit to "1"
After reset, and set the
I
nternal reserved area expansion bit to "1"
Figure 1.10.2. Memory location and chip select area
in each processor mode