R01UH0092EJ0110 Rev.1.10
Page 155 of 807
Jul 31, 2012
M16C/64C Group
12. Memory Space Expansion Function
12.2.1
The DBR register is enabled when bits PM01 to PM00 in the PM0 register are 01b (memory expansion
mode) or 11b (microprocessor mode).
This register becomes write enabled when bits PM15 to PM14 in the PM1 register are 11b (4-MB
mode).
No register bits. If necessary, set to 0. The read value is 0.
b7 b6 b5 b4
b1
b2
b3
Data Bank Register
Symbol
DBR
Address
000Bh
Bit Symbol
Bit Name
RW
Reset Value
00h
b0
Function
RW
BSR0
Bank select bit
—
(b1-b0)
—
OFS
RW
—
(b7-b6)
—
Offset bit
0 : No offset
1 : Offset
RW
BSR1
RW
BSR2
b5 b4 b3
0 0 0 : Bank 0
0 0 1 : Bank 1
0 1 0 : Bank 2
0 1 1 : Bank 3
b5 b4 b3
1 0 0 : Bank 4
1 0 1 : Bank 5
1 1 0 : Bank 6
1 1 1 : Bank 7
No register bits. If necessary, set to 0. The read value is 0.
Содержание M16C Series
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