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S3F80JB MICROCONTROLLER v
Table of Contents
Part I — Programming Model
Chapter 1 Product Overview
S3C8/S3F8-Series Microcontrollers ...........................................................................................................1-1
S3F80JB Microcontroller ............................................................................................................................1-1
Features.....................................................................................................................................................1-2
Block Diagram (32-pin package) ................................................................................................................1-3
Block Diagram (44-pin package) ................................................................................................................1-4
Pin Assignments.........................................................................................................................................1-5
Pin Circuits.................................................................................................................................................1-10
Chapter 2 Address Spaces
Overview ....................................................................................................................................................2-1
Program Memory........................................................................................................................................2-2
Register Architecture..................................................................................................................................2-5
Register Page Pointer (PP)................................................................................................................2-7
Register Set1.....................................................................................................................................2-8
Register Set 2....................................................................................................................................2-8
Prime Register Space........................................................................................................................2-9
Working Registers..............................................................................................................................2-10
Using the Register Pointers ...............................................................................................................2-11
Register Addressing...................................................................................................................................2-13
Common Working Register Area (C0H–CFH)....................................................................................2-15
4-Bit Working Register Addressing ....................................................................................................2-16
8-Bit Working Register Addressing ....................................................................................................2-18
System and User Stacks............................................................................................................................2-20
Chapter 3 Addressing Modes
Overview ....................................................................................................................................................3-1
Register Addressing Mode (R)...........................................................................................................3-2
Indirect Register Addressing Mode (IR).............................................................................................3-3
Indexed Addressing Mode (X)............................................................................................................3-7
Direct Address Mode (DA).................................................................................................................3-10
Indirect Address Mode (IA) ................................................................................................................3-12
Relative Address Mode (RA)..............................................................................................................3-13
Immediate Mode (IM).........................................................................................................................3-14
Chapter 4 Control Registers
Overview ....................................................................................................................................................4-1