Samsung S3P80C5 User manual

21-S3-P80C5/C80C5/C80C8 -052002
USER'S MANUAL
S3P80C5/C80C5/C80C8
8-Bit CMOS
Microcontrollers
Revision 1

S3P80C5/C80C5/C80C8
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.
"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.
S3P80C5/C80C5/C80C8 8-Bit CMOS Microcontrollers
User's Manual, Revision 1
Publication Number: 21-S3-P80C5/C80C5/C80C8-052002
© 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

S3P80C5/C80C5/C80C8 MICROCONTROLLER iii
Preface
The S3C80C5/C80C8 Microcontroller User's Manual is designed for application designers and programmers who
are using the S3C80C5/C80C8 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 S3C80C5/C80C8 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
KS88-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 S3C80C5/C80C8 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
S3C80C5/C80C8 microcontroller. Also included in Part II are electrical, mechanical, OTP, and development tools
data. It has eight chapters:
Chapter 7 Clock Circuit
Chapter 8 RESET and Power-Down
Chapter 9 I/O Ports
Chapter 10 Basic Timer and Timer 0
Chapter 11 Timer 1
Chapter 12Counter A
Chapter 13 Electrical Data
Chapter 14 Mechanical Data
Two order forms are included at the back of this manual to facilitate customer order for S3C80C5/C80C8
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.

S3P80C5/C80C5/C80C8 MICROCONTROLLER v
Table of Contents
Part I — Programming Model
Chapter 1 Product Overview
Overview.................................................................................................................................................1-1
S3P80C5/C80C5/C80C8 Microcontroller .................................................................................................1-1
Features..................................................................................................................................................1-2
CPU ........................................................................................................................................................1-2
Block Diagram.........................................................................................................................................1-3
Pin Assignments......................................................................................................................................1-4
Pin Descriptions.......................................................................................................................................1-5
Pin Circuits..............................................................................................................................................1-6
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 Pointers............................................................................................................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 Stacks..........................................................................................................................2-18
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 S3P80C5/C80C5/C80C8 MICROCONTROLLER
Table of Contents (Continued
Chapter Control Registers
................................ ................................ .................
Chapter 5
Overview................................ ................................................................ 5-1
Interrupt Types ................................................................ 5-2
Interrupt Structure ................................................................ 5-3
Interrupt Vector Addresses ................................................................ 5-5
Enable/Disable Interrupt Instructions (EI, DI) ...................................................
System-Level Interrupt Control Registers ................................ ........................5-7
................................................................ ..5-8
................................................................ 5-9
System Mode Register (SYM) ................................................................ 5-10
Interrupt Mask Register (IMR) ................................................................ 5-11
Interrupt Priority Register (IPR) ................................................................ 5-12
Interrupt Request Register (IRQ) ................................................................ 5-14
Interrupt Pending Function Types ................................................................ 5-15
Interrupt Source Polling Sequence ................................................................ 5-16
Interrupt Service Routines ................................................................ 5-16
Generating Interrupt Vector Addresses ............................................................
Nesting of Vectored Interrupts ................................ .........................................
Instruction Pointer (IP)................................ ..................................................... 7
Fast Interrupt Processing ................................................................ 5-17
Chapter Instruction Set
Overview ................................................................ .................6-1
................................................................ ......................................
Register Addressing ................................ ........................................................
Addressing Modes................................ ...........................................................
Flags Register (FLAGS) ................................ ..................................................
Flag Descriptions................................ .............................................................
Instruction Set Notation ................................ ...................................................
Condition Codes................................ ..............................................................
Instruction Descriptions ................................ ...................................................

S3P80C5/C80C5/C80C8 MICROCONTROLLER vii
Table of Contents (Continued)
Part II Hardware Descriptions
Chapter 7 Clock Circuit
Overview.................................................................................................................................................7-1
System Clock Circuit.......................................................................................................................7-1
Clock Status During Power-Down Modes.........................................................................................7-2
System Clock Control Register (CLKCON)......................................................................................7-3
Chapter 8 RESETRESET and Power-Down
System Reset..........................................................................................................................................8-1
LVD Reset.......................................................................................................................................8-1
Interrupt with Reset (INTR)..............................................................................................................8-2
Watch-Dog Timer Reset..................................................................................................................8-2
Power-on Reset (POR)....................................................................................................................8-2
System Reset Operation .................................................................................................................8-3
Hardware Reset Values...................................................................................................................8-4
Power-Down Modes.................................................................................................................................8-6
Stop mode.......................................................................................................................................8-6
Using POR to Release Stop Mode...................................................................................................8-6
Using an INTR to Release Stop Mode.............................................................................................8-6
Idle Mode........................................................................................................................................8-9
Summary Table of Stop Mode, and Idle Mode.................................................................................8-10
Chapter 9 I/O Ports
Overview.................................................................................................................................................9-1
Port Data Registers.........................................................................................................................9-2
Pull-Up Resistor Enable Registers...................................................................................................9-2
Port 0..............................................................................................................................................9-4
Port 0 Interrupt Enable Register (P0INT).........................................................................................9-5
Port 0 Interrupt Pending Register (P0PND)......................................................................................9-5
Port 1..............................................................................................................................................9-7
Port 2..............................................................................................................................................9-9
Chapter 10 Basic Timer and Timer 0
Module Overview.....................................................................................................................................10-1
Basic Timer Control Register (BTCON) ...............................................................................................10-1
Basic Timer Function Description........................................................................................................10-3
Timer 0 Control Register (T0CON) ......................................................................................................10-3
Timer 0 Function Description...............................................................................................................10-5

viii S3P80C5/C80C5/C80C8 MICROCONTROLLER
Table of Contents (Concluded)
Chapter 11 Timer 1
Overview.................................................................................................................................................11-1
Timer 1 Overflow Interrupt...............................................................................................................11-2
Timer 1 Match Interrupt...................................................................................................................11-2
Timer 1 Control Register (T1CON) ..................................................................................................11-4
Chapter 12 Counter A
Overview.................................................................................................................................................12-1
Counter A Control Register (CACON)..............................................................................................12-3
Counter A Pulse Width Calculations................................................................................................12-4
Chapter 13 Electrical Data
Overview.................................................................................................................................................13-1
Chapter 14 Mechanical Data
Overview.................................................................................................................................................14-1

S3P80C5/C80C5/C80C8 MICROCONTROLLER ix
List of Figures
Figure Title Page
Number Number
1-1 Block Diagram........................................................................................................1-3
1-2 Pin Assignment Diagram (24-Pin SOP/SDIP Package) ..........................................1-4
1-3 Pin Circuit Type 1 (Port 0)......................................................................................1-6
1-4 Pin Circuit Type 2 (Port 1)......................................................................................1-7
1-5 Pin Circuit Type 3 (P2.0)........................................................................................1-8
1-6 Pin Circuit Type 4 (P2.1)........................................................................................1-9
1-7 Pin Circuit Type 5 (P2.2)........................................................................................1-10
2-1 Program Memory Address Space...........................................................................2-2
2-2 Internal Register File Organization .........................................................................2-4
2-3 Register Page Pointer (PP) ....................................................................................2-5
2-4 Set 1, Set 2, and Prime Area Register Map............................................................2-7
2-5 8-Byte Working Register Areas (Slices)..................................................................2-8
2-6 Contiguous 16-Byte Working Register Block ..........................................................2-9
2-7 Non-Contiguous 16-Byte Working Register Block...................................................2-10
2-8 16-Bit Register Pair................................................................................................2-11
2-9 Register File Addressing.........................................................................................2-12
2-10 Common Working Register Area............................................................................2-13
2-11 4-Bit Working Register Addressing.........................................................................2-15
2-12 4-Bit Working Register Addressing Example ..........................................................2-15
2-13 8-Bit Working Register Addressing.........................................................................2-16
2-14 8-Bit Working Register Addressing Example ..........................................................2-17
2-15 Stack Operations....................................................................................................2-18
3-1 Register Addressing ...............................................................................................3-2
3-2 Working Register Addressing .................................................................................3-2
3-3 Indirect Register Addressing to Register File..........................................................3-3
3-4 Indirect Register Addressing to Program Memory...................................................3-4
3-5 Indirect Working Register Addressing to Register File............................................3-5
3-6 Indirect Working Register Addressing to Program or Data Memory ........................3-6
3-7 Indexed Addressing to Register File.......................................................................3-7
3-8 Indexed Addressing to Program or Data Memory with Short Offset ........................3-8
3-9 Indexed Addressing to Program or Data Memory ...................................................3-9
3-10 Direct Addressing for Load Instructions ..................................................................3-10
3-11 Direct Addressing for Call and Jump Instructions....................................................3-11
3-12 Indirect Addressing.................................................................................................3-12
3-13 Relative Addressing ...............................................................................................3-13
3-14 Immediate Addressing............................................................................................3-14
4-1 Register Description Format...................................................................................4-4

xS3P80C5/C80C5/C80C8 MICROCONTROLLER
List of Figures(Continued)
Figure Title Page
Number Number
5-1 KS88-Series Interrupt Types...................................................................................5-2
5-3 ROM Vector Address Area .....................................................................................5-5
5-2 Interrupt Structure ..................................................................................................5-4
5-4 Interrupt Function Diagram.....................................................................................5-8
5-5 System Mode Register (SYM) ................................................................................5-10
5-6 Interrupt Mask Register (IMR).................................................................................5-11
5-7 Interrupt Request Priority Groups ...........................................................................5-12
5-8 Interrupt Priority Register (IPR)...............................................................................5-13
5-9 Interrupt Request Register (IRQ) ............................................................................5-14
6-1 System Flags Register (FLAGS).............................................................................6-6
7-1 Main Oscillator Circuit (External Crystal or Ceramic Resonator).............................7-1
7-2 External Clock Circuit.............................................................................................7-1
7-3 System Clock Circuit Diagram................................................................................7-2
7-4 System Clock Control Register (CLKCON).............................................................7-3
8-1 Reset Block Diagram..............................................................................................8-1
8-2 Power-on Reset Circuit...........................................................................................8-2
8-3 Timing Diagram for Power-on Reset Circuit............................................................8-3
9-1 S3P80C5/C80C5/C80C8 I/O Port 0 Data Register Format......................................9-2
9-2 S3P80C5/C80C5/C80C8 I/O Port 1 Data Register Format......................................9-3
9-3 Port 0 High-Byte Control Register (P0CONH).........................................................9-4
9-4 Port 0 Low-Byte Control Register (P0CONL) ..........................................................9-5
9-5 Port 0 External Interrupt Control Register (P0INT)..................................................9-6
9-6 Port 0 External Interrupt Pending Register (P0PND)...............................................9-7
9-7 Port 1 High-Byte Control Register (P1CONH).........................................................9-7
9-8 Port 1 Low-Byte Control Register (P1CONL) ..........................................................9-8
9-9 Port 2 Control Register (P2CON)............................................................................9-9
9-10 Port 2 Data Register (P2) .......................................................................................9-10

S3P80C5/C80C5/C80C8 MICROCONTROLLER xi
List of Figures(Concluded)
Figure Title Page
Number Number
10-1 Basic Timer Control Register (BTCON)..................................................................10-2
10-2 Timer 0 Control Register (T0CON).........................................................................10-4
10-3 Simplified Timer 0 Function Diagram: Interval Timer Mode....................................10-5
10-4 Simplified Timer 0 Function Diagram: PWM Mode.................................................10-6
11-1 Simplified Timer 1 Function Diagram: Interval Timer Mode....................................11-2
11-2 Timer 1 Block Diagram...........................................................................................11-3
11-3 Timer 1 Control Register (T1CON).........................................................................11-4
11-4 Timer 1 Registers...................................................................................................11-5
12-1 Counter A Block Diagram.......................................................................................12-2
12-2 Counter A Control Register (CACON).....................................................................12-3
12-3 Counter A Registers...............................................................................................12-4
12-4 Counter A Output Flip-Flop Waveforms in Repeat Mode........................................12-5
13-1 Input Timing for External Interrupts (Port 0)............................................................13-5
13-2 Operating Voltage Range ......................................................................................13-6
14-1 24-Pin SOP Package Mechanical Data ..................................................................14-1
14-2 24-Pin SDIP Package Mechanical Data..................................................................14-2

S3P80C5/C80C5/C80C8 MICROCONTROLLER xiii
List of Tables
Table Title Page
Number Number
1-1 Pin Descriptions .....................................................................................................1-5
2-1 Register Type Summary.........................................................................................2-3
4-1 Mapped Registers (Set1)........................................................................................4-2
5-1 Interrupt Vectors.....................................................................................................5-6
5-2 Interrupt Control Register Overview .......................................................................5-7
5-3 Interrupt Source Control and Data Registers...........................................................5-9
6-1 Instruction Group Summary....................................................................................6-2
6-2 Flag Notation Conventions.....................................................................................6-8
6-3 Instruction Set Symbols..........................................................................................6-8
6-4 Instruction Notation Conventions............................................................................6-9
6-5 Opcode Quick Reference.......................................................................................6-10
6-6 Condition Codes.....................................................................................................6-12
8-1 Set 1 Register Values After Reset ..........................................................................8-4
8-2 Summary of Each Mode.........................................................................................8-10
9-1 S3P80C5/C80C5/C80C8 Port Configuration Overview...........................................9-1
9-2 Port Data Register Summary..................................................................................9-2
13-1 Absolute Maximum Ratings....................................................................................13-2
13-2 D.C. Electrical Characteristics................................................................................13-2
13-3 Characteristics of Low Voltage Detect circuit..........................................................13-4
13-4 Data Retention Supply Voltage in Stop Mode.........................................................13-4
13-5 Input/Output Capacitance.......................................................................................13-4
13-6 A.C. Electrical Characteristics ................................................................................13-4
13-7 Oscillation Characteristics......................................................................................13-5
13-8 Oscillation Stabilization Time .................................................................................13-6

S3P80C5/C80C5/C80C8 MICROCONTROLLER xv
List of Programming Tips
Description Page
Number
Chapter 2: Address Spaces
Setting the Register Pointers...............................................................................................................2-9
Using the RPs to Calculate the Sum of a Series of Registers...............................................................2-10
Addressing the Common Working Register Area.................................................................................2-14
Standard Stack Operations Using PUSH and POP..............................................................................2-19
Chapter 8: RESETRESET and Power-Down
To Divide STOP Mode Releasing and POR.........................................................................................8-8
Chapter 10: Basic Timer and Timer 0
Configuring the Basic Timer ................................................................................................................10-8
Programming Timer 0..........................................................................................................................10-9
Chapter 12: Counter A
To Generate 38 kHz, 1/3duty Signal Through P2.1..............................................................................12-6
To Generate a One Pulse Signal Through P2.1...................................................................................12-7

S3P80C5/C80C5/C80C8 MICROCONTROLLER xvii
List of Register Descriptions
Register Full Register Name Page
Identifier Number
BTCON Basic Timer Control Register..................................................................................4-5
CACON Counter A Control Register.....................................................................................4-6
CLKCON System Clock Control Register...............................................................................4-7
EMT External Memory Timing Register ..........................................................................4-8
FLAGS System Flags Register ...........................................................................................4-9
IMR Interrupt Mask Register ..........................................................................................4-10
IPH Instruction Pointer (High Byte) ...............................................................................4-11
IPL Instruction Pointer (Low Byte) ................................................................................4-11
IPR Interrupt Priority Register........................................................................................4-12
IRQ Interrupt Request Register......................................................................................4-13
P0CONHPort 0 Control Register (High Byte)........................................................................4-14
P0CONL Port 0 Control Register (Low Byte).........................................................................4-15
P0INT Port 0 Interrupt Control Register.............................................................................4-16
P0PND Port 0 Interrupt Pending Register ...........................................................................4-17
P0PUR Port 0 Pull-up Resistor Enable Register..................................................................4-18
P1CONHPort 1 Control Register (High Byte)........................................................................4-19
P1CONLPort 1 Control Register (Low Byte).........................................................................4-20
P1PUR Port 1 Pull-up Resistor Enable Register .................................................................4-21
P2CON Port 2 Control Register...........................................................................................4-22
PP Register Page Pointer ............................................................................................4-23
RP0 Register Pointer 0...................................................................................................4-24
RP1 Register Pointer 1...................................................................................................4-24
SPL Stack Pointer (Low Byte)........................................................................................4-25
STOPCON Stop Control Register.............................................................................................4-25
SYM System Mode Register...........................................................................................4-26
T0CON Timer 0 Control Register ........................................................................................4-27
T1CON Timer 1 Control Register ........................................................................................4-28

S3P80C5/C80C5/C80C8 MICROCONTROLLER xix
List of Instruction Descriptions
Instruction Full Register Name Page
Mnemonic Number
ADC Add with Carry........................................................................................................6-14
ADD Add ........................................................................................................................6-15
AND Logical AND...........................................................................................................6-16
BAND Bit AND..................................................................................................................6-17
BCP Bit Compare...........................................................................................................6-18
BITC Bit Complement .....................................................................................................6-19
BITR Bit Reset ................................................................................................................6-20
BITS Bit Set....................................................................................................................6-21
BOR Bit OR....................................................................................................................6-22
BTJRF Bit Test, Jump Relative on False............................................................................6-23
BTJRT Bit Test, Jump Relative on True.............................................................................6-24
BXOR Bit XOR..................................................................................................................6-25
CALL Call Procedure .......................................................................................................6-26
CCF Complement Carry Flag.........................................................................................6-27
CLR Clear......................................................................................................................6-28
COM Complement...........................................................................................................6-29
CP Compare................................................................................................................6-30
CPIJE Compare, Increment, and Jump on Equal ..............................................................6-31
CPIJNE Compare, Increment, and Jump on Non-Equal.......................................................6-32
DA Decimal Adjust.......................................................................................................6-33
DEC Decrement .............................................................................................................6-35
DECW Decrement Word....................................................................................................6-36
DI Disable Interrupts...................................................................................................6-37
DIV Divide (Unsigned)...................................................................................................6-38
DJNZ Decrement and Jump if Non-Zero ..........................................................................6-39
EI Enable Interrupts....................................................................................................6-40
ENTER Enter......................................................................................................................6-41
EXIT Exit ........................................................................................................................6-42
IDLE Idle Operation ........................................................................................................6-43
INC Increment...............................................................................................................6-44
INCW Increment Word .....................................................................................................6-45
IRET Interrupt Return......................................................................................................6-46
JP Jump......................................................................................................................6-47
JR Jump Relative........................................................................................................6-48
LD Load.......................................................................................................................6-49
LDB Load Bit..................................................................................................................6-51