
S3C880A/F880A MICROCONTROLLER
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Table of Contents
Part I — Programming Model
Chapter 1
Product Overview
Overview.............................................................................................................................................1-1
Features.............................................................................................................................................1-2
Block Diagram ....................................................................................................................................1-3
Pin Assignments.................................................................................................................................1-4
Pin Descriptions..................................................................................................................................1-5
Pin Circuits.........................................................................................................................................1-7
Chapter 2
Address Spaces
Overview.............................................................................................................................................2-1
Program Memory (ROM)......................................................................................................................2-2
Register Architecture...........................................................................................................................2-3
ROM Code Option (RCOD_OPT)...........................................................................................................2-5
Register Page Pointer (PP)..........................................................................................................2-6
Effect of Different Instructions For Inter-Page Data Operations .........................................................2-7
Register Set 1.............................................................................................................................2-14
Register Set 2.............................................................................................................................2-14
Prime Register Space..................................................................................................................2-14
Working Registers.......................................................................................................................2-16
Using The Register Pointers .........................................................................................................2-17
Register Addressing ............................................................................................................................2-19
Common Working Register Area (C0H–CFH) .................................................................................2-21
4-Bit Working Register Addressing................................................................................................2-22
8-Bit Working Register Addressing................................................................................................2-24
System and User Stacks.....................................................................................................................2-26
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