Renesas M16C/64A Series User Manual page 196

M16C/64A Group
Memory expansion mode where the PM13 bit is 1
ROM address
000000h
040000h
080000h
0C0000h
100000h
140000h
180000h
Data only
1C0000h
200000h
240000h
280000h
2C0000h
300000h
340000h
380000h
Program
or data
3C0000h
Data only
3FFFFFh
Figure 12.7 Relationship between Addresses in 4-MB ROM and Those in MCU (2/3)
R01UH0136EJ0210 Rev.2.10
Jul 31, 2012
MCU address
OFS bit in DBR OFS bit in DBR
register = 0 register = 1
40000h
bank
0
(256 KB)
7FFFFh
40000h
bank
0
(256 KB)
7FFFFh
40000h
bank
1
(256 KB)
7FFFFh
40000h
bank
1
(256 KB)
7FFFFh
40000h
bank
2
(256 KB)
7FFFFh
40000h
bank
2
(256 KB)
7FFFFh
40000h
bank
3
(256 KB)
7FFFFh
40000h
bank
3
(256 KB)
7FFFFh
40000h
bank
4
(256 KB)
7FFFFh
40000h
bank
4
(256 KB)
7FFFFh
40000h
bank
5
(256 KB)
7FFFFh
40000h
bank
5
(256 KB)
7FFFFh
40000h
bank
6
(256 KB)
7FFFFh
40000h
bank
6
(256 KB)
7FFFFh
40000h
bank
7
(256 KB)
7FFFFh
40000h
bank
7
(256 KB)
7FFFFh
12. Memory Space Expansion Function
Output from the MCU Pins
Bank Access
CS Output
OFS
Number Area
CS3 CS2 CS1
40000h
0 0 0
0
7FFFFh
0 0 0
0
40000h
0 0 0
1
7FFFFh
0 0 0
40000h
0 0 1
0
7FFFFh
0 0 1
1
40000h
0 0 1
1
7FFFFh
0 0 1
40000h
0 1 0
0
7FFFFh
0 1 0
2
40000h
0 1 0
1
7FFFFh
0 1 0
40000h
0 1 1
0
7FFFFh
0 1 1
3
40000h
0 1 1
1
7FFFFh
0 1 1
40000h
1 0
0
0
7FFFFh
1 0 0
4
40000h
1 0 0
1
7FFFFh
1 0 0
40000h
1 0 1
0
7FFFFh
1 0 1
5
40000h
1 0 1
1
7FFFFh
1 0 1
40000h
1 1 0
0
7FFFFh
1 1 0
6
40000h
1 1 0
1
7FFFFh
1 1 0
40000h
1 1 1
7FFFFh
1 1 1
7 0
80000h
FFFFFh
40000h
1 1 1
7FFFFh
1 1 1
7 1
80000h
FFFFFh
A21 A20 A19
Address input for 4-MB ROM
Address Output
A19 A18 A17 A16 A15 to A0
000000h
0 1 0 0 0000h
0 1 1 1 FFFFh 03FFFFh
040000h
1 0 0 0 0000h
07FFFFh
1 0 1 1 FFFFh
0000h 080000h
0 1 0 0
0 1 1 1 FFFFh 0BFFFFh
0C0000h
1 0 0 0 0000h
0FFFFFh
1 0 1 1 FFFFh
0 1 0000h 100000h
0 0
13FFFFh
0 1 1 1 FFFFh
140000h
1 0 0 0 0000h
17FFFFh
1 0 1 1 FFFFh
0000h 180000h
0 1 0 0
1BFFFFh
0 1 1 1 FFFFh
1C0000h
1 0 0 0 0000h
1FFFFFh
1 0 1 1 FFFFh
200000h
0000h
0 1 0 0
23FFFFh
0 1 1 1 FFFFh
240000h
1 0 0 0 0000h
27FFFFh
1 0 1 1 FFFFh
280000h
0 1 0000h
0 0
2BFFFFh
0 1 1 1 FFFFh
2C0000h
1 0 0 0 0000h
2FFFFFh
1 0 1 1 FFFFh
300000h
0000h
0 1 0 0
33FFFFh
0 1 1 1 FFFFh
340000h
1 0 0 0 0000h
37FFFFh
1 0 1 1 FFFFh
380000h
0 1 0 0 0000h
3BFFFFh
0 1 1 1 FFFFh
Internal ROM access
Internal ROM access
3C0000h
1 0 0 0 0000h
1 0 1 1 FFFFh 3FFFFFh
Internal ROM access
Internal ROM access
A18 N.C. A17 A16 A15 to A0 4-MB ROM
access area
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