D12320VF25V Datasheet, PDF (105/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 3 MCU Operating Modes
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
Operating
Operating
Mode
FWE MD2 MD1 MD0 Mode
Description
1^*
0001—
—
2^*
10
3^*
1
4
1 0 0 Advanced Expanded mode with
5
1
on-chip ROM disabled
6
10
Expanded mode with
on-chip ROM enabled
7
1
Single-chip mode
8^*
1000—
—
9^*
1
10
1 0 Advanced Boot mode
11
1
12^*
100—
—
13^*
1
14
1 0 Advanced User program mode
15
1
Note: * Cannot be used in this LSI.
External Data
Bus
On-Chip Initial Max.
ROM Value Value
—
—
—
Disabled 16 bits 16 bits
8 bits 16 bits
Enabled 8 bits 16 bits
—
—
—
—
—
Enabled 8 bits
—
—
—
16 bits
—
—
Enabled 8 bits 16 bits
—
—
Rev.7.00 Feb. 14, 2007 page 71 of 1108
REJ09B0089-0700