Fujitsu MB91360 SERIES Toepassingsnotitie - Pagina 9
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2 MB91FV360 Operating modes
Before the procedures for loading the code are described it is necessary to point out some
details of the different operating modes of the MCU.
All MCU's (with external bus interface) of the MB91360-serie can be set to Internal ROM-
mode or to External ROM-mode. Figure 2 shows the memory map of these devices.
00:0000
00:07FF
00:1000
01:0000
01:FFFF
03:C000
03:FFFF
04:0000
04:3FFC
The important difference between both modes is the access to addresses of the area
0x40000-0xFFFFF.
Internal ROM-mode
•
all accesses at addresses between
0x40000 and 0xFFFFF are accesses to
internal resources
© Fujitsu Microelectronics Europe GmbH
Chapter 2 MB91FV360 Operating modes
Internal ROM mode
DMA
I-RAM
Data RAM (16k)
Fast RAM
512k FLASH ROM
CAN
Figure 2 operating mode's of the MB91360's
Table 1 details of each operating mode
- 9 -
External ROM mode
00:0000
00:07FF
00:1000
01:0000
01:FFFF
03:C000
03:FFFF
04:0000
04:3FFC
External ROM-mode
•
All accesses at addresses between
0x40000 and 0xFFFFF are accesses via
the external bus interface.
•
Internal resources like Fast-RAM, Boot-
ROM and Flash memory are disabled
and can't be accessed
IO Area
DMA
I-RAM
Data RAM (16k)
external access
area can be used for
emulation
AN-910011-18