MB91121 查看數據表（PDF） - Fujitsu

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MB91121

32-bit RISC Microcontroller

Fujitsu 

MB91121

s CPU CORE

1. Memory Space

The FR family has a logical address space of 4 Gbytes (232 bytes) and the CPU linearly accesses the memory

space.

• Memory space

External ROM/external bus mode

0000 0000H

I/O

Direct addressing area

0000 0400H

I/O

See “s I/O MAP”

0000 0800H

0000 1000H

0000 2000H

0000 2800H

0000 3000H

0000 F000H

0000 F300H

0001 0000H

Access inhibited

Embedded RAM 4 KB

Y-RAM1

Y-RAM1

Access inhibited

DSP Macros

Access inhibited

External area

←Usable as RAM in the DSP Macros YBANK unused mode.

←Usable as RAM when DSP Macros is not used.

FFFF FFFFH

• Direct addressing area

The following areas on the memory space are assigned to direct addressing area for I/O. In these areas, an

address can be specified in a direct operand of a code.

Direct areas consist of the following areas dependent on accessible data sizes.

Byte data access : 000H to 0FFH

Half word data access : 000H to 1FFH

Word data access : 000H to 3FFH

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