MB90822 查看數據表（PDF） - Fujitsu

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MB90822

16-bit Proprietary Microcontroller

Fujitsu 

MB90820 Series

■ F2MC-16LX CPU PROGRAMMING MODEL

• Dedicated registers

: Accumulator (A)

AH

AL

Dual 16-bit register used for storing results of calculation

etc. The two 16-bit registers can be combined to be used as

a sequence of 32-bit register.

USP

: User stack pointer (USP)

The 16-bit pointer indicating the user stack address.

SSP

: System stack pointer (SSP)

The 16-bit pointer indicating the system stack address.

32 bit

PS

PC

DPR

PCB

DTB

USB

SSB

ADB

8 bit

16 bit

: 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 executing of the short direct addressing.

: Program bank register (PCB)

The 8-bit register indicating the program space.

: Data bank register (DTB)

The 8-bit register indicating the data space.

: 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.

: Additional data bank register (ADB)

The 8-bit register indicating the additional

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