H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 103
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)
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3.1
3.1.1
The H8S/2350 has three operating modes (modes 1, 4, and 5). These modes are determined by the
mode pin (MD
as shown in table 3.1.
Table 3.1 lists the MCU operating modes.
Table 3.1
The CPU’s architecture allows for 4 Gbytes of address space, but the H8S/2350 actually accesses
a maximum of 16 Mbytes.
Modes 1, 4, and 5 are externally expanded modes that allow access to external memory and
peripheral devices.
The external expansion modes allow switching between 8-bit and 16-bit bus modes. After program
execution starts, an 8-bit or 16-bit address space can be set for each area, depending on the bus
controller setting. If 16-bit access is selected for any one area, 16-bit bus mode is set; if 8-bit
access is selected for all areas, 8-bit bus mode is set.
MCU
Operating
Mode
0
1
2
3
4
5
6
7
Overview
H8S/2350 Operating Mode Selection
MD
0
1
MCU Operating Mode Selection (H8S/2350)
2
2
to MD
MD
0
1
0
1
Section 3 MCU Operating Modes
1
0
) settings. The CPU operating mode and initial bus width can be selected
MD
0
1
0
1
0
1
0
1
0
CPU
Operating
Mode
—
Normal
—
Advanced
—
Description
—
On-chip ROM
disabled, expanded
mode
—
On-chip ROM
disabled, expanded
mode
—
Rev. 3.00 Sep 15, 2006 page 69 of 988
Section 3 MCU Operating Modes
On-Chip
ROM
—
Disabled
—
Disabled
—
External Data Bus
Initial
Width
—
8 bits
—
16 bits
8 bits
—
REJ09B0330-0300
Max.
Width
16 bits
—
16 bits
16 bits
—
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