HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 113

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit 3
FLSHE
0
1
Bits 2 and 1—Reserved: These bits are always read as 0. Only 0 should be written to these bits.
Bit 0—Reserved: In the H8S/2328B F-ZTAT and H8S/2326 F-ZTAT, this bit is always read as 0
and should only be written with 0. In the H8S/2329B F-ZTAT, this bit is reserved and should only
be written with 0.
3.3
3.3.1
The H8S/2329 does not support mode 1. Do not select the mode 1 setting.
3.3.2
This is a flash memory boot mode. See section 19, ROM, for details. This is the same as advanced
on-chip ROM enabled expansion mode, except when erasing and reprogramming flash memory.
3.3.3
This is a flash memory boot mode. See section 19, ROM, for details. This is the same as advanced
single-chip ROM mode, except when erasing and reprogramming flash memory.
3.3.4
The CPU can access a 16-Mbyte address space in advanced mode. The on-chip ROM is disabled.
Ports A, B, and C function as an address bus, port D functions as a data bus, and part of port F
carries bus control signals.
The initial bus mode after a reset is 16 bits, with 16-bit access to all areas. However, note that if 8-
bit access is designated by the bus controller for all areas, the bus mode switches to 8 bits.
Operating Mode Descriptions
Mode 1
Mode 2 (H8S/2329B F-ZTAT Only)
Mode 3 (H8S/2329B F-ZTAT Only)
Mode 4 (Expanded Mode with On-Chip ROM Disabled)
Description
Flash control registers are not selected for addresses H'FFFFC8 to H'FFFFCB
Flash control registers are not selected for addresses H'FFFFC8 to H'FFFFCB
Rev.6.00 Sep. 27, 2007 Page 83 of 1268
Section 3 MCU Operating Modes
REJ09B0220-0600
(Initial value)