M30622M4 MITSUBISHI [Mitsubishi Electric Semiconductor], M30622M4 Datasheet - Page 23

• Manufacturer Part Number: M30622M4
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Memory Space Expansion Functions
Figure 1.8.3. External memory connect example in expansion mode 1
A connection example
Figure 1.8.3 shows a connection example of the MCU with the external memories in expansion mode 1.
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
FFFFF
017FF
D0000
00000
00400
04000
08000
28000
30000
(An example of using M30622MC in microprocessor mode)
A0 to A16
D0 to D7
16
16
16
16
16
16
16
16
16
CS1
CS2
CS3
CS0
A17
A18
A19
WR
RD
_______
Internal area reserved
External area
Internal RAM
SFR area
area
17
8
AD17
AD0 to AD16
AD18
CS
AD0 to AD16
OE
S1
W
DQ0 to DQ7
AD19
OE
DQ0 to DQ7
S2
(128K bytes)
Usable for
data only
SRAM
(128K bytes)
CS2
Usable both for
programs only
programs and
(1M byte)
Usable for
Flash
ROM
for data
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
_______
(1008K bytes)
CS0
Mitsubishi microcomputers
M16C / 62 Group
23