MB89151 Datasheet, PDF (23/52 Pages) Fujitsu Component Limited. – 8-bit Proprietary Microcontroller

MB89150/150A Series
The following general-purpose registers are provided:
General-purpose registers: An 8-bit register for storing data
The general-purpose registers are 8 bits and located in the register banks of the memory. One bank contains
eight registers. Up to a total of 8 banks can be used on the MB89151 (RAM 128 × 8 bits), and a total of 16 banks
can be used on the MB89152/3/4/5 (RAM 256 × 8 bits). The bank currently in use is indicated by the register
bank pointer (RP).
Note: The number of register banks that can be used varies with the RAM size.
Register Bank Configuration
This address = 0100H + 8 × (RP)
R0
R1
R2
R3
R4
R5
R6
R7
Memory area
8 banks (MB89151)
16 banks (MB89152/3/4/5)
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