M16C62_N Datasheet, PDF (46/621 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY

Processor Mode
Mitsubishi microcomputers
M16C / 62 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
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.
(1)Normal mode
Internal reserved area expansion bit="0"
Memory expansion
mode
0000016
SFR area
(1K bytes)
0040016 _{Internal RAM area}
(15K bytes)
0400016
Microprocessor
mode
SFR area
(1K bytes)
Internal RAM area
(15K bytes)
0800016
2800016
3000016
External area
CFFFF16
D000016
Internal ROM area
(192K bytes)
FFFFF16
After reset
External area
CS3(16K bytes)
CS2(128K bytes)
CS1(32K bytes)
CS0
Memory expansion mode
: 640K bytes
Microprocessor mode
: 832K bytes
Internal reserved area expansion bit="1"
Memory expansion
mode
0000016
SFR area
(1K bytes)
0040016 _{Internal RAM area}
(20K bytes)
0540016 _{Internal reserved area}
0600016
0800016
Microprocessor
mode
SFR area
(1K bytes)
Internal RAM area
(20K bytes)
Internal reserved area
2800016
3000016
BFFFF16
C000016
External area
Internal ROM area
(256K bytes)
External area
CS3(8K bytes)
CS2(128K bytes)
CS1(32K bytes)
CS0
Memory expansion mode
: 576K bytes
Microprocessor mode
: 832K bytes
FFFFF16
After reset, and set the Internal reserved area expansion bit to "1"
Note: The reset vector lies in an area between D000016 and FFFFB16.
(2)Expansion mode 1
Internal reserved area expansion bit="0"
Memory expansion
mode
0000016 _{SFR area}
(1K bytes)
0040016 _{Internal RAM area}
(15K bytes)
0400016
Microprocessor
mode
SFR area
(1K bytes)
Internal RAM area
(15K bytes)
0800016
2800016
3000016
External area
External area
CFFFF16
D000016
Internal ROM area
(192K bytes)
FFFFF16
After reset
CS3 (16K bytes)
CS2 (128K bytes)
CS1 (32K bytes)
176K bytes
= the extent of
memory
expanded
CS0
Memory expansion mode
: 816K bytes
Microprocessor mode
: 1008K bytes
Internal reserved area expansion bit="1"
Memory expansion
mode
0000016
0040016
SFR area
(1K bytes)
Internal RAM area
(20K bytes)
0540016 _{Internal reserved area}
0600016
0800016
Microprocessor
mode
SFR area
(1K bytes)
Internal RAM area
(20K bytes)
Internal reserved area
2800016
3000016
BFFFF16
C000016
External area
Internal ROM area
(256K bytes)
External area
CS3 (8K bytes)
CS2 (128K bytes)
CS1 (32K bytes)
168K bytes
= the extent of
memory
expanded
CS0
Memory expansion mode
: 744K bytes
Microprocessor mode
: 1000K bytes
FFFFF16
After reset, and set the Internal reserved area expansion bit to "1"
Note: The reset vector lies in an area between D000016 and FFFFB16.
(2)Expansion mode 2
Internal reserved area expansion bit="0"
Memory expansion
mode
0000016
SFR area
(1K bytes)
0040016 _{Internal RAM area}
(15K bytes)
0400016
Microprocessor
mode
SFR area
(1K bytes)
Internal RAM area
(15K bytes)
0800016
2800016
4000016 _{External area}
External area
CFFFF16
D000016
Internal ROM area
(192K bytes)
FFFFF16
After reset
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
Internal reserved area expansion bit="1"
Memory expansion
mode
0000016
0040016
SFR area
(1K bytes)
Internal RAM area
(20K bytes)
0540016 _{Internal reserved area}
0600016
0800016
Microprocessor
mode
SFR area
(1K bytes)
Internal RAM area
(20K bytes)
Internal reserved area
2800016
4000016
BFFFF16
C000016
External area
Internal ROM area
(256K bytes)
External area
CS3(8K bytes)
CS2(128K bytes)
CS1(96K bytes)
CS0
Memory expansion mode
: 512K bytes x 7banks + 256K bytes
Microprocessor mode
: 512K bytes x 8banks
FFFFF16
After reset, and set the Internal reserved area expansion bit to "1"
Note: The reset vector lies in an area between D000016 and FFFFB16.
Figure 1.10.2. Memory location and chip select area in each processor mode
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