8-BIT CMOS MICROCONTROLLERS

S3C825A/P825A 8-BIT CMOS MICROCONTROLLERS USER'S MANUAL Revision 1 Important Notice The information in this publication has been carefully checked and is believed to be entirely accurate at the time of publication. Samsung assumes no responsibility, however, for possible errors or omissions, or for any consequences resulting from the use of the information contained herein. Samsung reserves the right to make changes in its products or product specifications with the intent to improve function or design at any time and without notice and is not required to update this documentation to reflect such changes. This publication does not convey to a purchaser of semiconductor devices described herein any license under the patent rights of Samsung or others. Samsung makes no warranty, representation, or guarantee regarding the suitability of its products for any particular purpose, nor does Samsung assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability, including without limitation any consequential or incidental damages. S3C825A/P825A 8-Bit CMOS Microcontrollers User's Manual, Revision 1 Publication Number: 21-S3-C825A/P825A-032002 © 2002 Samsung Electronics All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electric or mechanical, by photocopying, recording, or otherwise, without the prior written consent of Samsung Electronics. Samsung Electronics' microcontroller business has been awarded full ISO-14001 certification (BSI Certificate No. FM24653). All semiconductor products are designed and manufactured in accordance with the highest quality standards and objectives. Samsung Electronics Co., Ltd. San #24 Nongseo-Ri, Giheung-Eup Yongin-City, Gyeonggi-Do, Korea C.P.O. Box #37, Suwon 440-900 TEL: (82)-(31)-209-1934 FAX: (82)-(31)-209-1899 Home Page: http://www.samsungsemi.com Printed in the Republic of Korea "Typical" parameters can and do vary in different applications. All operating parameters, including "Typicals" must be validated for each customer application by the customer's technical experts. Samsung products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, for other applications intended to support or sustain life, or for any other application in which the failure of the Samsung product could create a situation where personal injury or death may occur. Should the Buyer purchase or use a Samsung product for any such unintended or unauthorized application, the Buyer shall indemnify and hold Samsung and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, expenses, and reasonable attorney fees arising out of, either directly or indirectly, any claim of personal injury or death that may be associated with such unintended or unauthorized use, even if such claim alleges that Samsung was negligent regarding the design or manufacture of said product. Preface The S3C825A/P825A Microcontroller User's Manual is designed for application designers and programmers who are using the S3C825A/P825A microcontroller for application development. It is organized in two main parts: Part I Programming Model Part II Hardware Descriptions Part I contains software-related information to familiarize you with the microcontroller's architecture, programming model, instruction set, and interrupt structure. It has six chapters: Chapter 1 Chapter 2 Chapter 3 Product Overview Address Spaces Addressing Modes Chapter 4 Chapter 5 Chapter 6 Control Registers Interrupt Structure Instruction Set Chapter 1, "Product Overview," is a high-level introduction to S3C825A/P825A with general product descriptions, as well as detailed information about individual pin characteristics and pin circuit types. Chapter 2, "Address Spaces," describes program and data memory spaces, the internal register file, and register addressing. Chapter 2 also describes working register addressing, as well as system stack and user-defined stack operations. Chapter 3, "Addressing Modes," contains detailed descriptions of the addressing modes that are supported by the S3C8-series CPU. Chapter 4, "Control Registers," contains overview tables for all mapped system and peripheral control register values, as well as detailed one-page descriptions in a standardized format. You can use these easy-to-read, alphabetically organized, register descriptions as a quick-reference source when writing programs. Chapter 5, "Interrupt Structure," describes the S3C825A/P825A interrupt structure in detail and further prepares you for additional information presented in the individual hardware module descriptions in Part II. Chapter 6, "Instruction Set," describes the features and conventions of the instruction set used for all S3C8-series microcontrollers. Several summary tables are presented for orientation and reference. Detailed descriptions of each instruction are presented in a standard format. Each instruction description includes one or more practical examples of how to use the instruction when writing an application program. A basic familiarity with the information in Part I will help you to understand the hardware module descriptions in Part II. If you are not yet familiar with the S3C8-series microcontroller family and are reading this manual for the first time, we recommend that you first read Chapters 1–3 carefully. Then, briefly look over the detailed information in Chapters 4, 5, and 6. Later, you can reference the information in Part I as necessary. Part II "hardware Descriptions," has detailed information about specific hardware components of the S3C825A/P825A microcontroller. Also included in Part II are electrical, mechanical, OTP, and development tools data. It has 15 chapters: Chapter 7 Chapter 8 Chapter 9 Chapter 10 Chapter 11 Chapter 12 Chapter 13 Chapter 14 Clock Circuit RESET and Power-Down I/O Ports Basic Timer and Timer 0 Timer 1 8-bit Timer 2 16-bit Timer 3 Watch Timer Chapter 15 Chapter 16 Chapter 17 Chapter 18 Chapter 19 Chapter 20 Chapter 21 Chapter 22 LCD Controller/Driver 10-bit Analog-to-Digital Converter Serial I/O Interface UART Electrical Data Mechanical Data S3P825A OTP Development Tools Two order forms are included at the back of this manual to facilitate customer order for S3C825A/P825A microcontrollers: the Mask ROM Order Form, and the Mask Option Selection Form. You can photocopy these forms, fill them out, and then forward them to your local Samsung Sales Representative. S3C825A/P825A MICROCONTROLLER iii Table of Contents Part I — Programming Model Chapter 1 Product Overview S3C8-Series Microcontrollers...................................................................................................................1-1 S3C825A Microcontroller .........................................................................................................................1-1 OTP.........................................................................................................................................................1-1 Features ..................................................................................................................................................1-2 Block Diagram .........................................................................................................................................1-3 Pin Assignment........................................................................................................................................1-4 Pin Descriptions.......................................................................................................................................1-6 Pin Circuits ..............................................................................................................................................1-8 Chapter 2 Address Spaces Overview .................................................................................................................................................2-1 Program Memory (ROM) .........................................................................................................................2-2 Register Architecture ...............................................................................................................................2-3 Register Page Pointer (PP)..................................................................................................................2-5 Register Set 1......................................................................................................................................2-6 Register Set 2......................................................................................................................................2-6 Prime Register Space..........................................................................................................................2-7 Working Registers ...............................................................................................................................2-8 Using the Register Points ....................................................................................................................2-9 Register Addressing.................................................................................................................................2-11 Common Working Register Area (C0H–CFH)......................................................................................2-13 4-Bit Working Register Addressing ......................................................................................................2-14 8-Bit Working Register Addressing ......................................................................................................2-16 System and User Stack ................................