M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 38

• Manufacturer Part Number: M30622MA-XXXFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
• Manufacturer: RENESAS [Renesas Technology Corp]

Memory Space Expansion Functions
Figure 1.8.2. Memory location and chip select area in expansion mode 1
(2) Expansion mode 1
In this mode, the memory space can be expanded by 176K bytes in addition to that in normal mode.
Figure 1.8.2 shows the memory location and chip select area in expansion mode 1.
In accessing data in expansion mode 1, CS3, CS2, and CS1 go active in the area from 04000
2FFFF
area from 04000
and fetching a program (CS0).
Note 1: These memory maps show an instance in which PM13 is set to 0; but in the case of M30624MG/FG, they show an
Note 2: The memory maps in single-chip mode are omitted.
XXXXX
YYYYY
FFFFF
D0000
00000
00400
04000
08000
28000
30000
M30622M4
M30620M8
M30620MA
M30620MC/EC
M30622M8/E8
M30622MA
M30624MG/FG
M30622MC
Expansion mode 1 (memory space = 1.2M bytes for PM15 = 1, PM14 = 0)
16
Type No.
16
16
16
16
16
16
16
16
16
16
; in fetching a program, CS0 goes active. That is, the address space is expanded by using the
instance in which PM13 is set to 1.
Internal area reserved
expansion mode
Internal area reserved
External area
Internal RAM
Internal ROM
SFR area
Memory
area
area
16
Address XXXXX
through 2FFFF
02BFF
02BFF
02BFF
013FF
017FF
017FF
053FF
00FFF
_______
16
16
16
16
16
16
16
16
Internal area reserved
16
Microprocessor
Internal RAM
SFR area
_______
External
Address YYYYY
area
area
16
mode
C0000
E8000
E0000
E8000
E0000
F8000
F0000
F0000
(176K bytes) appropriately for accessing data (CS3, CS2, CS1)
_______
16
16
16
16
16
16
16
16
Memory expansion
mode:
Microprocessor mode:
16
_______
CS3
CS2
CS1
(16K bytes)
(128 Kbytes)
(32K bytes)
816K bytes
1008K bytes
_______
CS0
04000
2FFFF
CS0:active in fetching a program
CS1, CS2, CS3:active in accessing data
30000
FFFFF
CS0:active both in fetching a program
to
to
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
and in accessing data
16
16
16
16
176K bytes
= the extent of memory expanded
Mitsubishi microcomputers
________
M16C / 62 Group
_______
16
through
_______
23