MB90570A データシートの表示（PDF） - Fujitsu

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MB90570A

16-bit Proprietary Microcontroller

Fujitsu 

MB90570A/570C Series

■ F2MC-16LX CPU PROGRAMMING MODEL

• Dedicated registers

AH

AL

:Accumulator (A)

Dual 16-bit register used for storing results of calculation etc. The two

16-bit registers can be combined to be used as a 32-bit register.

USP

:User stack pointer (USP)

The 16-bit pointer indicating a user stack address.

SSP

PS

PC

DPR

PCB

:System stack pointer (SSP)

The 16-bit pointer indicating the status of the system stack address.

:Processor status (PS)

The 16-bit register indicating the system status.

:Program counter (PC)

The 16-bit register indicating storing location of the current instruction

code.

:Direct page register (DPR)

The 8-bit register indicating bit 8 through 15 of the operand address

in the short direct addressing mode.

:Program bank register (PCB)

The 8-bit register indicating the program space.

DTB

:Data bank register (DTB)

The 8-bit register indicating the data space.

USB

SSB

:User stack bank register (USB)

The 8-bit register indicating the user stack space.

:System stack bank register (SSB)

The 8-bit register indicating the system stack space.

32-bit

ADB

8-bit

16-bit

:Additional data bank register (ADB)

The 8-bit register indicating the additional data space.

DS07-13701-9E

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