H8SX1582 Datasheet, PDF (101/796 Pages) Renesas Technology Corp – Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1500 Series

Section 3 MCU Operating Modes
Section 3 MCU Operating Modes
3.1 Operating Mode Selection
This LSI has three operating modes (modes 1 to 3). The operating mode is selected by the setting
of mode pins (MD1 and MD0). Table 3.1 lists MCU operating mode settings.
In this LSI, advanced mode for the CPU operating mode and 16-Mbyte address space are
available. LSI initiation mode can be selected from boot mode and user boot mode for
programming/erasing the flash memory and single chip initiation mode.
Table 3.1 MCU Operating Mode Settings
MCU
Operating
Mode
MD1
1
0
2
1
3
1
MD0
1
0
1
CPU
Operating
Mode
Advanced
Address
Space
16 Mbytes
Description
User boot mode
Boot mode
Single chip initiation mode
On-Chip ROM
Enabled
Enabled
Enabled
In mode 1 and mode 2, which are user boot mode and boot mode, the flash memory can be
programmed and erased. For details on user boot mode and boot mode, see section 17, Flash
Memory (0.18-µm F-ZTAT Version).
In mode 3, this LSI operates in single chip mode.
3.2 Register Descriptions
The following registers are related to the operating mode setting.
• Mode control register (MDCR)
• System control register (SYSCR)
Rev. 2.00 Mar. 15, 2006 Page 63 of 754
REJ09B0199-0200