S3F80JB

ADDRESS SPACE

 

 

2 ADDRESS SPACE

OVERVIEW

The S3F80JB microcontroller has two types of address space:

Internal program memory (Flash memory)

Internal register file

A 16-bit address bus supports program memory operations. A separate 8-bit register bus carries addresses and data between the CPU and the register file.

The S3F80JB has a programmable internal 64-Kbytes Flash ROM. An external memory interface is not implemented.

There are 333 mapped registers in the internal register file. Of these, 272 are for general-purpose use. ( This number includes a 16-byte working register common area that is used as a “scratch area” for data operations, a 192-byte prime register area, and a 64-byte area (Set 2) that is also used for stack operations). Twenty-two 8-bit registers are used for CPU and system control and 39 registers are mapped peripheral control and data registers.

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Samsung S3F80JB manual Address Space, Overview