HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 105

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit 0—Reserved: In the H8S/2338 F-ZTAT, this bit is always read as 0 and should only be
written with 0. In the H8S/2339 F-ZTAT, this bit is reserved and should only be written with 0.
3.3
3.3.1
Mode 1 is not supported in the H8S/2339 Group, and must not be set.
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, ports D and E function 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.
3.3.5
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 8 bits, with 8-bit access to all areas. However, note that if at
least one area is designated for 16-bit access by the bus controller, the bus mode switches to 16
bits and port E becomes a data bus.
Operating Mode Descriptions
Mode 1
Mode 2 (H8S/2339 F-ZTAT Only)
Mode 3 (H8S/2339 F-ZTAT Only)
Mode 4 (Expanded Mode with On-Chip ROM Disabled)
Mode 5 (Expanded Mode with On-Chip ROM Disabled)
Rev.4.00 Sep. 07, 2007 Page 75 of 1210
REJ09B0245-0400