Freescale Semiconductor M68HC12A4EVB Manuale utente

M68HC12A4EVB

EVALUATION BOARD

USER’S MANUAL

M68HC12A4EVBUM/D

October 1999

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Important Notice to Users

While every effort has been made to ensure the accuracy of all information in

this document, Motorola assumes no liability to any party for any loss or

damage caused by errors or omissions or by statements of any kind in this

document, its updates, supplements, or special editions, whether such errors are

omissions or statements resulting from negligence, accident, or any other cause.

Motorola further assumes no liability arising out of the application or use of any

information, product, or system described herein: nor any liability for incidental

or consequential damages arising from the use of this document. Motorola

disclaims all warranties regarding the information contained herein, whether

expressed, implied, or statutory, including implied warranties of

merchantability or fitness for a particular purpose. Motorola makes no

representation that the interconnection of products in the manner described

herein will not infringe on existing or future patent rights, nor do the

descriptions contained herein imply the granting or license to make, use or sell

equipment constructed in accordance with this description.

Trademarks

This document includes these trademarks:

Motorola and the Motorola logo are registered trademarks

of Motorola, Inc.

MCUez is a trademark of Motorola, Inc.

Apple, Macintosh, MacTerminal, and System 7 are registered

trademarks of Apple Computer, Inc.

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Corporation in the U.S. and other countries.

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Motorola, Inc., is an Equal Opportunity / Affirmative Action Employer.

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M68HC12A4EVB Evaluation Board — Rev. 1 User’s Manual

MOTOROLA List of Sections 3

User’s Manual — M68HC12A4EVB Evaluation Board

List of Sections

Section 1. General Information . . . . . . . . . . . . . . . . . . . .15

Section 2. Configuration and Setup . . . . . . . . . . . . . . . .27

Section 3. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Section 4. Hardware Reference . . . . . . . . . . . . . . . . . . . .77

Appendix A. S-Record Format. . . . . . . . . . . . . . . . . . . .117

Appendix B. Communications Program Examples . . .123

Appendix C. D-Bug12 Startup Code . . . . . . . . . . . . . . .131

Appendix D. D-Bug12 Customization Data. . . . . . . . . .135

Appendix E. Customizing the EPROMs . . . . . . . . . . . .141

Appendix F. SDI Configuration . . . . . . . . . . . . . . . . . . .143

Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149

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User’s Manual M68HC12A4EVB Evaluation Board — Rev. 1

4 List of Sections MOTOROLA

List of Sections

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M68HC12A4EVB Evaluation Board — Rev. 1 User’s Manual

MOTOROLA Table of Contents 5

User’s Manual — M68HC12A4EVB Evaluation Board

Table of Contents

Section 1. General Information

1.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.3 General Description and Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.4 Performance Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1.5 Functional Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1.6 External Equipment Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . 22

1.7 EVB Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

1.8 Typographic Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

1.9 Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Section 2. Configuration and Setup

2.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2.2 Unpacking and Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2.3 EVB Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2.4 EVB to Power Supply Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.5 EVB to Terminal Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.6 Terminal Communications Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.6.1 Communication Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.6.2 Dumb-Terminal Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.6.3 Host-Computer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2.6.4 Changing the Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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User’s Manual M68HC12A4EVB Evaluation Board — Rev. 1

6 Table of Contents MOTOROLA

Table of Contents

2.7 Using Fast External RAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.7.1 Selecting and Replacing the RAM Chips . . . . . . . . . . . . . . . . . . . 32

2.7.2 Reprogramming the RAM Chip Select . . . . . . . . . . . . . . . . . . . . . 33

Section 3. Operation

3.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.2 Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.3 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.4 Program Abort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.5 Using D-Bug12 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.6 D-Bug12 Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

ASM Assemble Instructions . . . . . . . . . . . . . . . . . . . . . 44

BAUD Set Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

BF Block Fill. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

BR Breakpoint Set . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

BULK Bulk Erase On-Chip EEPROM . . . . . . . . . . . . . . 51

CALL Call Subroutine . . . . . . . . . . . . . . . . . . . . . . . . . . 52

G Go Execute a User Program . . . . . . . . . . . . . . . . 53

GT Go Till . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

HELP Onscreen Help Summary. . . . . . . . . . . . . . . . . . . 55

LOAD Load S-Record File . . . . . . . . . . . . . . . . . . . . . . . 56

MD Memory Display . . . . . . . . . . . . . . . . . . . . . . . . . 57

MDW Display Memory as 16-Bit Word . . . . . . . . . . . . 58

MM Memory Modify. . . . . . . . . . . . . . . . . . . . . . . . . . 59

MMW Modify 16-Bit Memory Word. . . . . . . . . . . . . . . 60

MOVE Move Memory Block. . . . . . . . . . . . . . . . . . . . . . 61

NOBR Remove Breakpoints . . . . . . . . . . . . . . . . . . . . . . 62

RD Register Display. . . . . . . . . . . . . . . . . . . . . . . . . . 63

RM Register Modify. . . . . . . . . . . . . . . . . . . . . . . . . . 64

T Trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

UPLOAD Display Memory in S-Record Format . . . . . . . . . 67

VERF Verify S-Record File Against Memory . . . . . . . . 68

<RegisterName> Modify Register Value . . . . . . . . . . . . . . . . . . . . 70

3.7 Alternate Execution from EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . 72

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Table of Contents

M68HC12A4EVB Evaluation Board — Rev. 1 User’s Manual

MOTOROLA Table of Contents 7

3.8 Off-Board Code Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

3.9 Memory Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

3.9.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

3.9.2 Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

3.10 Operational Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

3.10.1 On-Chip RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

3.10.2 SCI Port Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

3.10.3 Dedicated MCU Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

3.10.4 Terminal Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Section 4. Hardware Reference

4.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

4.2 Printed Circuit Board (PCB) Description. . . . . . . . . . . . . . . . . . . . . . 78

4.3 Configuration Headers and Jumper Settings. . . . . . . . . . . . . . . . . . . . 78

4.4 Power Input Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

4.5 Terminal Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

4.6 Microcontroller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

4.7 Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

4.7.1 Memory Types and Sockets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

4.7.2 Chip Selects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

4.7.3 Glue Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

4.8 Clock Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

4.9 Phase-Locked Loop (PLL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

4.10 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

4.11 Low-Voltage Inhibit (LVI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

4.12 Analog-to-Digital (A/D) Converter . . . . . . . . . . . . . . . . . . . . . . . . . . 91

4.13 Background Debug Mode (BDM) Interface. . . . . . . . . . . . . . . . . . . . 91

4.14 Prototype Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

4.15 MCU Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

4.16 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

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User’s Manual M68HC12A4EVB Evaluation Board — Rev. 1

8 Table of Contents MOTOROLA

Table of Contents

Appendix A. S-Record Format

A.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

A.2 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

A.3 S-Record Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

A.4 S-Record Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

A.5 S Record Creation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

A.6 S-Record Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

A.6.1 S0 Header Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

A.6.2 First S1 Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

A.6.3 S9 Termination Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

A.6.4 ASCII Characters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Appendix B. Communications Program Examples

B.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

B.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

B.3 Procomm for DOS — IBM PC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

B.3.1 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

B.3.2 S-Record Transfers to EVB Memory. . . . . . . . . . . . . . . . . . . . . . 126

B.4 Kermit for DOS — IBM PC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

B.4.1 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

B.4.2 S-Record Transfers to EVB Memory. . . . . . . . . . . . . . . . . . . . . . 127

B.5 Kermit — Sun Workstation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

B.5.1 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

B.5.2 S-Record Transfers to EVB Memory. . . . . . . . . . . . . . . . . . . . . . 128

B.6 MacTerminal — Apple Macintosh. . . . . . . . . . . . . . . . . . . . . . . . . . 128

B.6.1 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

B.6.2 S-Record Transfers to EVB Memory. . . . . . . . . . . . . . . . . . . . . . 129

B.7 Red Ryder — Apple Macintosh . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

B.7.1 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

B.7.2 S-Record Transfers to EVB Memory. . . . . . . . . . . . . . . . . . . . . . 130

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Table of Contents

M68HC12A4EVB Evaluation Board — Rev. 1 User’s Manual

MOTOROLA Table of Contents 9

Appendix C. D-Bug12 Startup Code

Appendix D. D-Bug12 Customization Data

D.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

D.2 Customization Data Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

D.2.1 C Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

D.2.2 Assembly Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

D.2.3 Initial User CPU Register Values . . . . . . . . . . . . . . . . . . . . . . . . 136

D.2.4 SysClk Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

D.2.5 IOBase Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

D.2.6 SCIBaudRegVal Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

D.2.7 EEBase and EESize Fields. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

D.2.8 EEPROM Erase/Program Delay Function Pointer Field. . . . . . . 138

D.2.9 Auxiliary Command Table Entries . . . . . . . . . . . . . . . . . . . . . . . 138

Appendix E. Customizing the EPROMs

Appendix F. SDI Configuration

Glossary

Index

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User’s Manual M68HC12A4EVB Evaluation Board — Rev. 1

10 Table of Contents MOTOROLA

Table of Contents

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