Table of Contents

Introduction.....................................................................................................................................................1

1.

Overview................................................................................................................................................. 4

1.1.

Programming Data Flow...............................................................................................................4

1.2.

Pin Utilization................................................................................................................................4

1.3.

Hardware Requirements.............................................................................................................. 4

1.4.

Write and/or Erase Section.......................................................................................................... 5

2.

Memory Map........................................................................................................................................... 6

2.1.

User ID Location...........................................................................................................................7

2.2.

Device/Revision ID....................................................................................................................... 7

2.3.

Device Configuration Information (DCI)....................................................................................... 7

2.4.

Configuration Bytes...................................................................................................................... 7

2.5.

Device ID .....................................................................................................................................9

2.6.

Revision ID ................................................................................................................................ 10

3.

Programming Algorithms.......................................................................................................................11

3.1.

Program/Verify Mode..................................................................................................................11

3.2.

Programming Algorithms............................................................................................................18

3.3.

Code Protection..........................................................................................................................23

3.4.

Hex File Usage...........................................................................................................................23

3.5.

CRC Checksum Computation.................................................................................................... 24

4.

Electrical Specifications........................................................................................................................ 25

5.

APPENDIX A: Revision History.............................................................................................................27

6.

APPENDIX B.........................................................................................................................................28

6.1.

CONFIG1 .................................................................................................................................. 29

6.2.

CONFIG2 .................................................................................................................................. 30

6.3.

CONFIG3................................................................................................................................... 31

6.4.

CONFIG4................................................................................................................................... 32

6.5.

CONFIG5................................................................................................................................... 33

6.6.

CONFIG6................................................................................................................................... 34

6.7.

CONFIG7................................................................................................................................... 35

6.8.

CONFIG8................................................................................................................................... 36

6.9.

CONFIG9................................................................................................................................... 37

The Microchip Website.................................................................................................................................38

Product Change Notification Service............................................................................................................38

Customer Support........................................................................................................................................ 38

Microchip Devices Code Protection Feature................................................................................................ 38

Legal Notice................................................................................................................................................. 38

Trademarks.................................................................................................................................................. 39

PIC18FXXQ41

Programming Specification

DS40002143B-page 2