68HC11 Notes PDF 30 oct 2006 GCC 68HC11

68HC11 Programmers Reference Manual

gram examples distributed with the Motorola 68HC11 Reference Manual; any of the code examples stored on the anonymous ftp sites (see Section H) or ...

Menu Computer Functional Block Diagram

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68HC11 Instruction Set

Immediate addressing always deals with data or operands stored in registers not in memory. Examples: Address Code Mnemonic. Instruction Actions. 0100 86 5C LDAA

MC68HC11

MICROCONTROLADOR 68HC11: FUNDAMENTOS RECURSOS Y PROGRAMACIÓN. OBJETIVOS : Con este libro se pretende cubrir el gran vacío que existe de información en

68HC11 Notes

30 oct 2006 GCC 68HC11 compiler version 2.2. Processor(s):. Motorola 68HC11 E1E9 operating at 2 MHz E-clock ... 3.4 Sample Source Code .

Programming

68HC11 Instruction Set the source program is translated into machine code ... Example. ? Add the following numbers: ? 68HC11 can add 2.

M68HC11E M68HC11E Family - Data Sheet

In the M68HC11 CPU condition codes are updated automatically by most instructions. For example

Interfacing Motorola 68HC11 to Microchip SPI™ Serial EEPROMS

Motorola 68HC11. In order to simplify the design process Microchip has written an assembly code rou- tine to communicate with our SPI parts that is

Tutorial Introduction

Welcome to this tutorial on the 68HC08 Analog-to-Digital Converter (ADC). can be found in the 68HC11 Reference Manual M68HC11RM/AD (see http://www.

Efficient C Code for Eight-Bit MCUs 11/98

The 8051 68HC11

68HC11 Notes

Version 1.1.1

Oct 30, 2006

Andrew J. Blauch

School of Engineering

68HC11 Notes i

DISCLAIMER:

All software is provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose.

COMPATABILITY:

This software has been created and tested using the following development systems:

Compiler(s):

GCC 68HC11 compiler version 2.2

Processor(s):

Motorola 68HC11 E1,E9 operating at 2 MHz E-clock

Evaluation Board(s):

Axiom Manufacturing CMM11E1-EVBU

Axiom Manufacturing CME11E9-EVBU

Simulators(s):

68HC11 EVBU Simulator Version 0.6. PySim11 Version 0.5

(developed by Andrew Sterian)

Copyright © 2005

School of Engineering

Grand Valley State University

68HC11 Notes ii

1 HC11 Microcontroller.................................................................................................1

1.1 Overview.............................................................................................................1

1.2 Memory Maps.....................................................................................................1

2 Communication between PC and EVBU....................................................................6

2.1 Overview.............................................................................................................6

2.2 Block Diagram ....................................................................................................7

3 Gcc 68HC11 Compiler................................................................................................8

3.1 Overview.............................................................................................................8

3.2 Library Functions................................................................................................8

3.3 BUFFALO Library Functions.............................................................................8

3.4 Sample Source Code...........................................................................................8

4 I/O Registers................................................................................................................9

4.1 Overview.............................................................................................................9

4.2 Memory Mapped I/O Register............................................................................9

5 Parallel I/O................................................................................................................11

5.1 Overview...........................................................................................................11

5.2 Output Ports.......................................................................................................11

5.3 Input Ports.........................................................................................................11

5.4 Bi-directional Ports ...........................................................................................12

6 I/O Register C Definitions.........................................................................................13

6.1 Overview...........................................................................................................13

6.2 Register Defines................................................................................................13

6.3 Register Usage...................................................................................................13

6.4 Bit Defines.........................................................................................................14

6.5 Bit Usage...........................................................................................................14

7 Clocks and Counters..................................................................................................15

7.1 Overview...........................................................................................................15

7.2 Clocks................................................................................................................15

7.3 Free Running Clock and Counter......................................................................16

7.3.1 Overview...................................................................................................16

7.3.2 Sample Source Code.................................................................................17

7.4 Real-Time Interrupt Clock................................................................................18

7.5 Software Timing Measurements .......................................................................19

7.5.1 Example - Measuring a Pulse Width........................................................20

7.5.2 Example - Generating a Pulse Width .......................................................22

8 Events and Flags........................................................................................................24

8.1 Overview...........................................................................................................24

8.2 Polling Technique .............................................................................................25

8.2.1 Overview...................................................................................................25

8.2.2 Sample Source Code.................................................................................25

8.3 Interrupt Technique...........................................................................................26

8.3.1 Overview...................................................................................................26

8.3.2 Sample Source Code.................................................................................26

68HC11 Notes iii

8.3.3 Terminology..............................................................................................27

8.3.4 Sequence of Operation..............................................................................29

9 Timer Overflow.........................................................................................................30

9.1 Overview...........................................................................................................30

9.2 Sample Source Code.........................................................................................30

10 Real-Time Interrupt...............................................................................................31

10.1 Overview...........................................................................................................31

10.2 Sample Source Code.........................................................................................31

11 Output Compares...................................................................................................32

11.1 Overview...........................................................................................................32

11.2 Output Compare 1.............................................................................................33

11.3 Output Compares 2...5......................................................................................33

11.4 Examples...........................................................................................................34

11.4.1 Generating a Pulse Width (Output Compare 1)........................................34

11.4.2 Generating a Pulse Width (Output Compare 2)........................................35

11.4.3 Generating a Pulse Width (Output Compare 1 and 2) ..............................36

11.4.4 Generating a PWM Signal (Output Compare 1 and 2).............................37

12 Input Captures.......................................................................................................38

12.1 Overview...........................................................................................................38

12.2 Example - Measuring a Pulse Width................................................................39

13 Analog-to-Digital Conversion...............................................................................40

13.1 Overview...........................................................................................................40

13.2 Configuration ....................................................................................................41

14 Serial Communication Interface (SCI)..................................................................42

14.1 Overview...........................................................................................................42

14.2 Baud Rate..........................................................................................................43

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[PDF] 68HC11 Notes 30 oct 2006 GCC 68HC11

68HC11 Notes

Version 1.1.1

Oct 30, 2006

Andrew J. Blauch

School of Engineering

68HC11 Notes i

DISCLAIMER:

COMPATABILITY:

Compiler(s):

GCC 68HC11 compiler version 2.2

Processor(s):

Motorola 68HC11 E1,E9 operating at 2 MHz E-clock

Evaluation Board(s):

Axiom Manufacturing CMM11E1-EVBU

Axiom Manufacturing CME11E9-EVBU

Simulators(s):

68HC11 EVBU Simulator Version 0.6. PySim11 Version 0.5

Copyright © 2005

School of Engineering

Grand Valley State University

68HC11 Notes ii

Table of Contents

1 HC11 Microcontroller.................................................................................................1

1.1 Overview.............................................................................................................1

1.2 Memory Maps.....................................................................................................1

2 Communication between PC and EVBU....................................................................6

2.1 Overview.............................................................................................................6

2.2 Block Diagram ....................................................................................................7

3 Gcc 68HC11 Compiler................................................................................................8

3.1 Overview.............................................................................................................8

3.2 Library Functions................................................................................................8

3.3 BUFFALO Library Functions.............................................................................8

3.4 Sample Source Code...........................................................................................8

4 I/O Registers................................................................................................................9

4.1 Overview.............................................................................................................9

4.2 Memory Mapped I/O Register............................................................................9

5 Parallel I/O................................................................................................................11

5.1 Overview...........................................................................................................11

5.2 Output Ports.......................................................................................................11

5.3 Input Ports.........................................................................................................11

5.4 Bi-directional Ports ...........................................................................................12

6 I/O Register C Definitions.........................................................................................13

6.1 Overview...........................................................................................................13

6.2 Register Defines................................................................................................13

6.3 Register Usage...................................................................................................13

6.4 Bit Defines.........................................................................................................14

6.5 Bit Usage...........................................................................................................14

7 Clocks and Counters..................................................................................................15

7.1 Overview...........................................................................................................15

7.2 Clocks................................................................................................................15

7.3 Free Running Clock and Counter......................................................................16

7.3.1 Overview...................................................................................................16

7.3.2 Sample Source Code.................................................................................17

7.4 Real-Time Interrupt Clock................................................................................18

7.5 Software Timing Measurements .......................................................................19

7.5.1 Example - Measuring a Pulse Width........................................................20

7.5.2 Example - Generating a Pulse Width .......................................................22

8 Events and Flags........................................................................................................24

8.1 Overview...........................................................................................................24

8.2 Polling Technique .............................................................................................25

8.2.1 Overview...................................................................................................25

8.2.2 Sample Source Code.................................................................................25

8.3 Interrupt Technique...........................................................................................26

8.3.1 Overview...................................................................................................26

8.3.2 Sample Source Code.................................................................................26

68HC11 Notes iii

8.3.3 Terminology..............................................................................................27

8.3.4 Sequence of Operation..............................................................................29

9 Timer Overflow.........................................................................................................30

9.1 Overview...........................................................................................................30

9.2 Sample Source Code.........................................................................................30

10 Real-Time Interrupt...............................................................................................31

10.1 Overview...........................................................................................................31

10.2 Sample Source Code.........................................................................................31

11 Output Compares...................................................................................................32

11.1 Overview...........................................................................................................32

11.2 Output Compare 1.............................................................................................33

11.3 Output Compares 2...5......................................................................................33

11.4 Examples...........................................................................................................34