H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 196
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H8S-2350
Manufacturer Part Number
H8S-2350
Description
16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.H8S-2350.pdf
(1025 pages)
- Current page: 196 of 1025
- Download datasheet (6Mb)
Section 6 Bus Controller
6.5.3
With DRAM space, the row address and column address are multiplexed. In address multiplexing,
the size of the shift of the row address is selected with bits MXC1 and MXC0 in MCR. Table 6.6
shows the relation between the settings of MXC1 and MXC0 and the shift size.
Table 6.6
6.5.4
If the bit in ABWCR corresponding to an area designated as DRAM space is set to 1, that area is
designated as 8-bit DRAM space; if the bit is cleared to 0, the area is designated as 16-bit DRAM
space. In 16-bit DRAM space, 16-bit configuration DRAM can be connected directly.
In 8-bit DRAM space the upper half of the data bus, D
space both the upper and lower halves of the data bus, D
Access sizes and data alignment are the same as for the basic bus interface: see section 6.4.2, Data
Size and Data Alignment.
Rev. 3.00 Sep 15, 2006 page 162 of 988
REJ09B0330-0300
Row
address
Column
address
MXC1 MXC0 Shift Size A
0
1
—
Address Multiplexing
Data Bus
Address Multiplexing Settings by Bits MXC1 and MXC0
MCR
0
1
0
1
—
8 bits
9 bits
10 bits
Setting
prohibited
—
A
A
A
—
A
23
23
23
23
23
to A
to A
to A
to A
to A
13
13
13
13
13
A
A
A
A
—
A
12
20
12
12
12
A
A
A
A
—
A
11
19
20
11
11
A
A
A
A
—
A
10
18
19
20
10
15
15
A
A
A
A
—
A
to D
9
17
18
19
9
to D
Address Pins
A
A
A
A
—
A
8
, is enabled, while in 16-bit DRAM
8
16
17
18
8
0
, are enabled.
A
A
A
A
—
A
7
15
16
17
7
A
A
A
A
—
A
6
14
15
16
6
A
A
A
A
—
A
5
13
14
15
5
A
A
A
A
—
A
4
12
13
14
4
A
A
A
A
—
A
3
11
12
13
3
A
A
A
A
—
A
2
10
11
12
2
A
A
A
A
—
A
1
9
10
11
1
A
A
A
A
—
A
0
8
9
10
0
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