MIC94084 데이터 시트보기 (PDF) - Micrel

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MIC94084

67mΩ RDSON 2A High Side Load Switch in 0.85mm x 0.85mm Thin MLF® Package

Micrel 

MB91F127/F128

• MB91F128

External ROM

External bus mode

0000 0000H

I/O

0000 0400H

I/O

0000 0800H

Access inhibit

0000 1000H

0000 4000H

Internal RAM

12 KB

Internal ROM

External bus mode

I/O

I/O

Access inhibit

Internal RAM

12 KB

Single-chip mode

I/O

I/O

Access inhibit

Internal RAM

12 KB

Access inhibit

Access inhibit

Access inhibit

Direct

addressing

areas

I/O map

0001 0000H

External area

External area

Internal RAM

2 KB

FLASH ROM

510 KB

Access inhibit

Internal RAM

2 KB

0001 0000H

0008 0000H

0008 0800H

FLASH ROM

510 KB

FFFF FFFFH

External area

Access inhibit

0010 0000H

FFFF FFFFH

Note : External area is not accessible in single-chip mode. When accessing to external areas, select the internal

ROM external bus mode in mode register.

Direct addressing areas

The areas described below are used for I/O processes. The areas, referred to as “direct addressing areas,”

allow specifying an operand address directly by an instruction. The direct addressing areas varies as the

following, depending on size of the data to be accessed.

• Byte-data access : 0 to 0FFH

• Half-word data access : 0 to 1FFH

• Word-data access : 0 to 3FFH

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