M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 530

no-image

M30622MA-XXXFP

Manufacturer Part Number
M30622MA-XXXFP
Description
16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
External Buses
Figure 5.3.4. Memory Map in Memory space expansion mode 2
5.3.3 Memory Space Expansion Mode 2
In memory space extension mode 2, the maximum 1 Mbyte of memory space accessible in normal mode
is extended to 4 Mbytes. The extended area consists of a 512 Kbytes of area at addresses 40000
through BFFFF
bank 0 to bank 6 can be used exclusively for data access.
In memory expansion mode, in addition to the seven banks from bank 0 to bank 6, another bank, bank 7,
comprised of a 256 Kbytes of area from address 40000
cessor mode, in addition to the seven banks from bank 0 to bank 6, another bank, bank 7, comprised of
a 256 Kbytes of area from address C0000
placed in bank 7.
To choose each bank, use the Data bank register’s bank select bits (bits 3, 4, and 5 at address 0000B
When accessing this extended area for data, the device outputs a chip select signal from the CS0 pin and
a bank number from the CS1, CS2, and CS3 pins each that has been set by the bank select bits.
When fetching a program from the area of bank 7 comprised of addresses 40000
FFFFF
FFFFF
D0000
04000
08000
28000
40000
04000
08000
28000
40000
16
00000
00400
00000
00400
selectable by CS0. With this area comprising one bank, a total of seven banks from
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
Memory expansion mode
Microprocessor mode
Internal area reserved
Internal area reserved
Internal area reserved
Internal RAM area
Internal ROM area
Internal RAM area
External area
External area
SFR area
______
SFR area
CS3
CS2
CS1
CS3
CS2
CS1
CS0
______
______
CS0 area
expand
CS0 area
expand
______
16
to address FFFFF
The bank to use is selected by a
bank select bit.
The bank to use is selected by a
bank select bit.
FFFFF
7FFFF
7FFFF
C0000
40000
40000
BFFFF
16
16
16
16
16
16
16
program/data area
program/data area
16
Bank 7
Bank 7
Bank 7
to address 7FFFF
Bank 6
Bank 6
Data exclusive area
Data exclusive area
16
can be used. Programs and data can be
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
5
5
4
4
3
3
2
2
1
1
16
0
0
can be used. In micropro-
40000
BFFFF
16
through 7FFFF
16
16
Mitsubishi microcomputers
M16C / 62 Group
_______
16
, the
16
16
515
).

Related parts for M30622MA-XXXFP