Samsung S3C8275X Manuale utente

S3C8275X/F8275X/C8278X

/F8278X/C8274X/F8274X

8-BIT CMOS

MICROCONTROLLERS

USER'S MANUAL

Revision 1.4

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.

"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.

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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

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Samsung was negligent regarding the design or

manufacture of said product.

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X 8-Bit CMOS Microcontrollers

User's Manual, Revision 1.4

Publication Number: 21.4-S3-C8275X/F8275X/C8278X/F8278X/C8274X/F8274X-042007

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-Dong, Giheung-Gu

Yongin-City, Gyeonggi-Do, Korea

C.P.O. Box #37, Suwon 446-711

TEL: (82)-(31)-209-5238

FAX: (82)-(31)-209-6494

Home-Page URL: Http://www.samsungsemi.com

Printed in the Republic of Korea

NOTIFICATION OF REVISIONS

ORIGINATOR: Samsung Electronics, LSI Development Group, Gi-Heung, South Korea

PRODUCT NAME: S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X 8-bit

CMOS Microcontroller

DOCUMENT NAME: S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X User's Manual,

Revision1.4

DOCUMENT NUMBER: 21.4-S3-C8275X/F8275X/C8278X/F8278X/C8274X/F8274X-042007

EFFECTIVE DATE: April, 2007

SUMMARY: As a result of additional product testing and evaluation, some specifications

published in the S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X User's

Manual, Revision 1, have been changed. These changes for

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X microcontroller,

which are described in detail in the Revision Descriptions section below,

are related to the followings:

— Chapter 16. Embedded flash memory interface

— Chapter 17. Electrical Data

— Chapter 7. Clock Circuit

— Chapter 2. Address Spaces

DIRECTIONS:

Please note the changes in your copy (copies) of the

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X User's Manual, Revision 1.

Or, simply attach the Revision Descriptions of the next page to

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X User's Manual, Revision 1.

REVISION HISTORY

Revision Date Remark

0 February, 2005 Preliminary spec for internal release only.

1 April, 2005 First edition. Reviewed by Finechips.

1.1 July, 2005 Second edition. Reviewed by Finechips.

1.2 August, 2005 Third edition. Reviewed by Finechips.

1.3 May, 2006 Fourth edition. Reviewed by Finechips

1.4 April, 2007 Fifth edition. Reviewed by Finechips

REVISION DESCRIPTIONS

1. Electrical Data

Table 17-12. A.C. Electrical Characteristics for Internal Flash ROM

(TA= −25 °C to +85

°C, VDD = 2.0 V to 3.6 V)

Parameter Symbol Conditions Min Typ Max Unit

Programming time (1) Ftp − 30 − − µs

Chip erasing time (2) Ftp1 − 50 − − ms

Sector erasing time (3) Ftp2 − 10 − − ms

Data access time FtRS − − 25 − ns

Number of writing/erasing FNwe − − − 10,000(4) Times

NOTES:

1. The programming time is the time during which one byte (8-bit) is programmed.

2. The chip erasing time is the time during which all 16K byte block is erased.

3. The sector erasing time is the time during which all 128 byte block is erased.

4. Maximum number of writing/erasing is 10,000 times for full-flash(S3F8275) and 100 times for half-flash

(S3F8278X/F8274X).

5. The chip erasing is available in Tool Program Mode only.

2. Condition of Operating Voltage

Condition of operating voltage is modified “fx = 0 −4.2MHz” to “fx = 0.4 −4.2MHz” at 2.0V – 3.6V and

“fx = 0 − 8MHz” to “fx = 0.4 −8MHz” at 2.5V −3.6V in the page 17-2.

3. CHAPTHER 16. Embedded Flash Memory Interface

This chapter is modified for only S3F8275X.

4. CHAPTHER 7. Clock Circuit

The contents of OSCCON.7 should be changed “ 0 = Select normal circuit for sub oscillator” into “ 0 = Initial state”

in the page 4-21 and Figure 7-10.

It is added “NOTE: The OSCCON.7 should be maintained to “1”, during the sub oscillator operation.” In the page

4-21 and Figure 7-10.

The figure 7-7 is modified partly.

Descriptions of Revision 1.4

1. Smart Option Area

The Figures are modified about smart option area. Those are “Figure 2-1. Program Memory Address Space” and

“Figure 5-3. ROM Vector Address Area”.

2. CHAPTHER 17. Electrical Data

It is changed “VDD = 2.0 V to 3.6 V” into “VDD = 2.2 V to 3.6 V” in the Table 17-12.

3. DEVICE NAME

The device name is changed S3C8275/F8275/C8278/F8278/C8274/F8274 to

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X. The ‘X’ means ‘Commercial type’.

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X MICROCONTROLLER iii

Preface

The S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X Microcontroller User's Manual is designed for

application designers and programmers who are using the S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X

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

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X 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 S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X 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

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X microcontroller. Also included in Part II are electrical,

mechanical, Flash MCU, and development tools data. It has 14 chapters:

Chapter 7 Clock Circuit

Chapter 8 RESET and Power-Down

Chapter 9 I/O Ports

Chapter 10 Basic Timer

Chapter 11 Timer 1

Chapter 12 Watch Timer

Chapter 13 LCD Controller/Driver

Chapter 14 Serial I/O Interface

Chapter 15 Battery Level Detector

Chapter 16 Embedded Flash Memory Interface

Chapter 17 Electrical Data

Chapter 18 Mechanical Data

Chapter 19 S3F8275X/F8278X/F8274X

Flash MCU

Chapter 20 Development Tools

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X MICROCONTROLLER v

Table of Contents

Part I — Programming Model

Chapter 1 Product Overview

S3C8-Series Microcontrollers .......................................................................................................................1-1

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X Microcontroller.......................................................1-1

Flash..............................................................................................................................................................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

Smart Option.........................................................................................................................................2-3

Register Architecture.....................................................................................................................................2-5

Register Page Pointer (PP)..................................................................................................................2-8

Register Set 1.......................................................................................................................................2-10

Register Set 2.......................................................................................................................................2-10

Prime Register Space...........................................................................................................................2-11

Working Registers ................................................................................................................................2-12

Using the Register Points.....................................................................................................................2-13

Register Addressing......................................................................................................................................2-15

Common Working Register Area (C0H–CFH) .....................................................................................2-17

4-Bit Working Register Addressing ......................................................................................................2-18

8-Bit Working Register Addressing ......................................................................................................2-20

System and User Stack.................................................................................................................................2-22

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

vi S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X MICROCONTROLLER

Table of Contents (Continued)

Chapter 4 Control Registers

Overview....................................................................................................................................................... 4-1

Chapter 5 Interrupt Structure

Overview....................................................................................................................................................... 5-1

Interrupt Types..................................................................................................................................... 5-2

S3C8275X/C8278X/C8274X Interrupt Structure................................................................................. 5-3

Interrupt Vector Addresses.................................................................................................................. 5-4

Enable/Disable Interrupt Instructions (EI, DI) ...................................................................................... 5-6

System-Level Interrupt Control Registers............................................................................................ 5-6

Interrupt Processing Control Points..................................................................................................... 5-7

Peripheral Interrupt Control Registers................................................................................................. 5-8

System Mode Register (SYM) ............................................................................................................. 5-9

Interrupt Mask Register (IMR) ............................................................................................................. 5-10

Interrupt Priority Register (IPR)............................................................................................................ 5-11

Interrupt Request Register (IRQ)......................................................................................................... 5-13

Interrupt Pending Function Types........................................................................................................ 5-14

Interrupt Source Polling Sequence...................................................................................................... 5-15

Interrupt Service Routines ................................................................................................................... 5-15

Generating Interrupt Vector Addresses............................................................................................... 5-16

Nesting of Vectored Interrupts............................................................................................................. 5-16

Instruction Pointer (IP)......................................................................................................................... 5-16

Fast Interrupt Processing..................................................................................................................... 5-16

Chapter 6 Instruction Set

Overview....................................................................................................................................................... 6-1

Data Types........................................................................................................................................... 6-1

Register Addressing............................................................................................................................. 6-1

Addressing Modes............................................................................................................................... 6-1

Flags Register (FLAGS)....................................................................................................................... 6-6

Flag Descriptions ................................................................................................................................. 6-7

Instruction Set Notation........................................................................................................................ 6-8

Condition Codes .................................................................................................................................. 6-12

Instruction Descriptions........................................................................................................................ 6-13

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X MICROCONTROLLER vii

Table of Contents (Continued)

Part II Hardware Descriptions

Chapter 7 Clock Circuit

Overview........................................................................................................................................................7-1

System Clock Circuit ............................................................................................................................7-1

Main Oscillator Circuits.........................................................................................................................7-2

Sub Oscillator Circuits ..........................................................................................................................7-2

Clock Status During Power-Down Modes............................................................................................7-3

System Clock Control Register (CLKCON)..........................................................................................7-4

Clock Output Control Register (CLOCON)...........................................................................................7-5

Oscillator Control Register (OSCCON)................................................................................................7-6

Switching the CPU Clock......................................................................................................................7-7

Chapter 8 RESET and Power-Down

System Reset................................................................................................................................................8-1

Overview...............................................................................................................................................8-1

Normal Mode Reset Operation.............................................................................................................8-1

Hardware Reset Values........................................................................................................................8-2

Power-Down Modes......................................................................................................................................8-5

Stop Mode ............................................................................................................................................8-5

Idle Mode..............................................................................................................................................8-6

Chapter 9 I/O Ports

Overview........................................................................................................................................................9-1

Port Data Registers ..............................................................................................................................9-2

port 0.....................................................................................................................................................9-3

port 1.....................................................................................................................................................9-7

port 2.....................................................................................................................................................9-11

port 3.....................................................................................................................................................9-13

Port 4 ....................................................................................................................................................9-15

Port 5 ....................................................................................................................................................9-17

Port 6 ....................................................................................................................................................9-19

Chapter 10 Basic Timer

Overview........................................................................................................................................................10-1

Basic Timer Control Register (BTCON) ...............................................................................................10-2

Basic Timer Function Description.........................................................................................................10-3