HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 89
HD6412340
Manufacturer Part Number
HD6412340
Description
H8S/2345 F-ZTAT Hardware Manual
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet
1.HD6412340.pdf
(907 pages)
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3.1
3.1.1
The H8S/2345 Series has eight operating modes (modes 4 to 7, 10, 11, 14 and 15). These modes
are determined by the mode pin (MD
CPU operating mode and initial bus width can be selected as shown in table 3.1.
Table 3.1 lists the MCU operating modes.
Table 3.1
MCU
Operating
Mode
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
The CPU's architecture allows for 4 Gbytes of address space, but the H8S/2345 Series actually
accesses a maximum of 16 Mbytes.
Overview
Operating Mode Selection (F-ZTAT™ Version)
FWE MD
0
1
MCU Operating Mode Selection (F-ZTAT™ Version)
0
1
0
1
2
Section 3 MCU Operating Modes
MD
0
1
0
1
0
1
0
1
1
MD
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
CPU
Operating
Mode
—
Advanced On-chip ROM disabled, Disabled 16 bits 16 bits
—
Advanced Boot mode
—
Advanced User program mode
2
to MD
0
) and flash write enable pin (FWE) settings. The
Description
—
expanded mode
On-chip ROM enabled,
expanded mode
Single-chip mode
—
—
On-Chip
ROM
—
Enabled 8 bits
—
Enabled 8 bits
—
Enabled 8 bits
Initial
Width
—
8 bits
—
—
—
—
—
External Data
Bus
Max.
Width
—
16 bits
16 bits
—
—
16 bits
—
—
16 bits
—
69
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