Rev. 5.00, 12/03, page 69 of 1088
Section 3 MCU Operating Modes
3.1
Overview
3.1.1
Operating Mode Selection (H8S/2318 F-ZTAT, H8S/2317 F-ZTAT,
H8S/2315 F-ZTAT, and H8S/2314 F-ZTAT)
The H8S/2318 F-ZTAT, H8S/2317 F-ZTAT, H8S/2315 F-ZTAT, and H8S/2314 F-ZTAT have
eight operating modes (modes 4 to 7, 10, 11, 14 and 15). These modes are determined by the mode
pin (MD2 to MD0) and flash write enable pin (FWE) settings. The 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 Selection (H8S/2318 F-ZTAT, H8S/2317 F-ZTAT,
H8S/2315 F-ZTAT, and H8S/2314 F-ZTAT)
MCU
CPU
External Data
Bus
Operating
Mode
FWE MD2 MD1 MD0
Operating
Mode
Description
On-Chip
ROM
Initial
Value
Max.
Value
1
*
0
0
0
1
—
—
—
—
—
2
*
1
0
3
*
1
4
1
0
0
Advanced Expanded mode with
Disabled 16 bits
16 bits
5
1
on-chip ROM disabled
8 bits
16 bits
6
1
0
Expanded mode with
on-chip ROM enabled
Enabled 8 bits
16 bits
7
1
Single-chip mode
—
—
8
*
1
0
0
0
—
—
—
—
—
9
*
1
10
1
0
Advanced Boot mode
Enabled 8 bits
16 bits
11
1
—
—
12
*
1
0
0
—
—
—
—
—
13
*
1
14
1
0
Advanced User program mode
Enabled 8 bits
16 bits
15
1
—
—
Note:
*
Cannot be used in this LSI.
Содержание H8S/2318 series
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