M16C62_N Datasheet, PDF (39/621 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY

Memory Space Expansion Functions
Mitsubishi microcomputers
M16C / 62 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
A connection example
Figure 1.8.3 shows a connection example of the MCU with the external memories in expansion mode 1.
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In this example, CS0 is connected with a 1-M byte flash ROM and CS2 is connected with a 128-K byte
SRAM.
An example of connecting the MCU with external memories in expansion mode 1
(An example of using M30622MC in microprocessor mode)
D0 to D7
A0 to A16
A17
A18
A19
CS1
CS2
CS3
RD
CS0
8
DQ0 to DQ7
17
AD0 to AD16
AD17
AD18
AD19
OE
CS
WR
DQ0 to DQ7
AD0 to AD16
OE
S2
S1
W
0000016
SFR area
0040016 _{Internal RAM}
017FF16
area
Internal area reserved
0400016
0800016
2800016
3000016
External area
D000016
SRAM
(128K bytes)
Usable for
data only
CS2
(128K bytes)
Flash
ROM
(1M byte)
Usable for
programs only
Usable both for
programs and
for data
CS0
(1008K bytes)
FFFFF16
Figure 1.8.3. External memory connect example in expansion mode 1
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