S3C8245/P8245/C8249/P8249 MICROCONTROLLER iii
Preface
The S3C8245/P8245/C8249/P8249 Microcontroller User's Manual is designed for application designers and
programmers who are using the S3C8245/P8245/C8249/P8249 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 Product Overview
Chapter 2 Address Spaces
Chapter 3 Addressing Modes
Chapter 4 Control Registers
Chapter 5 Interrupt Structure
Chapter 6 Instruction Set
Chapter 1, "Product Overview," is a high-level introduction to S3C8245/P8245/C8249/P8249 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 S3C8245/P8245/C8249/P8249 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
S3C8245/P8245/C8249/P8249 microcontroller. Also included in Part II are electrical, mechanical, OTP, and
development tools data. It has 16 chapters:
Chapter 7 Clock Circuit
Chapter 8 nRESET and Power-Down
Chapter 9 I/O Ports
Chapter 10 Basic Timer
Chapter 11 8-bit Timer A/B
Chapter 1216-bit Timer 0/1
Chapter 13 Watch Timer
Chapter 14 LCD Controller/Driver
Chapter 15 10-bit-to-Digital Converter
Chapter 16 Serial I/O Interface
Chapter 17 Voltage Booster
Chapter 18 Voltage Level Detector
Chapter 19 Electrical Data
Chapter 20 Mechanical Data
Chapter 21 S3P8245/P8249 OTP
Chapter 22 Development Tools
Two order forms are included at the back of this manual to facilitate customer order for S3C8245/P8245/
C8249/P8249 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.