S3F84B8_UM_REV 1.00 2 ADDRESS SPACES
2-1
2 ADDRESS SPACES
2.1 OVERVIEW OF ADDRESS SPACES
The S3F84B8 microcontroller consists of two kinds of address spaces, namely:
Internal program memory (ROM)
Internal register file
A 16-bit address bus supports program memory operations. On the other hand, a separate 8-bit register bus
carries addresses and data between the CPU and internal register file.
The S3F84B8 microcontroller contains 8Kbytes of on-chip program memory configured as Internal ROM. It also
contains 272 general-purpose registers in the internal register file, where 59 bytes are mapped for system and
peripheral control functions.
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