M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 531

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M30622MA-XXXFP

Manufacturer Part Number
M30622MA-XXXFP
Description
16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
516
External Buses
Figure 5.3.5. Data bank register
device automatically outputs bank 7 (1, 1, 1) from the CS1, CS2, and CS3 pins each, no matter what bank
number has been set by the bank select bits. When accessing this same area for data, choose bank 7 by
setting the bank select bits first. For the area of bank 7 comprised of addresses C0000
FFFFF
either program fetch or data access.
When accessing the area comprised of addresses 04000
data access, the device outputs the same chip select signal from the CS1, CS2, and CS3 pins each as
output conventionally.
Figure 5.3.5 shows the Data bank register.
When alternately accessing areas across the bank boundary, you need to rewrite the bank select bits
each time. In this case, you can avoid this inconvenience by setting the Data bank register’s offset bit (bit
2 at address 0000B
bank select bits.
Data bank register
b7
16
b6
, the device automatically outputs bank 7 (1, 1, 1) from the CS1, CS2, and CS3 pins each, for
b5
b4
b3
b2
16
) to 1, because this allows you to access said areas without having to rewrite the
b1
b0
Bit symbol
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.
BSR
OFS
Symbol
DBR
Bank selection bits
Offset bit
Bit name
Address
000B
______
16
16
______
through 3FFFF
When reset
b5 b4 b3
0 0 0: Bank 0
0 1 0: Bank 2
1 0 0: Bank 4
1 1 0: Bank 6
0: Not offset
1: Offset
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
00
______
16
______
______
Description
16
______
______
, for both program fetch and
b5 b4 b3
0 0 1: Bank 1
0 1 1: Bank 3
1 0 1: Bank 5
1 1 1: Bank 7
______
Mitsubishi microcomputers
______
M16C / 62 Group
16
R
W
through

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