DM163004 Microchip Technology, DM163004 Datasheet

DM163004

Manufacturer Part Number

DM163004

Description

BOARD DEMO PICDEM.NET

Manufacturer

Microchip Technology

Datasheets

1.DM163004.pdf (6 pages)

2.DM163004.pdf (54 pages)

3.DM163004.pdf (2 pages)

Specifications of DM163004

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The PICDEM.net Demonstration Kit you have received

conforms functionally to the information provided in its

accompanying User’s Guide (DS39563B), except for

the anomalies described below.

All of the issues listed will be addressed in future

releases of the Demonstration Kit.

Hardware Issues:

1. Issue: Failure to Program PIC18F Devices

FIGURE 1:

 2002 Microchip Technology Inc.

Symptom: While attempting to reprogram an

installed microcontroller using the Microchip

MPLAB

encounter occasional programming failures.

This has only been observed when the installed

microcontroller is a 40-pin PIC18F device.

Problem: All of Microchip’s PIC18F microcontrol-

lers

(ICSP

mode. By default, this mode is enabled and can be

entered by pulling RB5 low. Since the PICDEM.net

board was originally designed with the PIC16F877

offer

), which uses a Low Voltage Programming

ICD 2 In-Circuit Debugger, the user may

PICDEM.net Demonstration Kit Errata Sheet

LOCATION FOR RESISTOR INSTALLATION

In-Circuit

Serial

Programming

Connect

Resistor

Here

R10

Demonstration Kit

microcontroller in mind (which does not offer the

low voltage option), an explicit pull-up on RB5 was

not included. Adding a pull-up resistor when using

PIC18F devices prevents the microcontroller from

accidentally entering Low Voltage Programming

mode.

Solution: Install a 10 kΩ resistor between the

junction of R10 and push button switch S3, and the

+5V supply. This will ensure that RB5 is pulled

high.

The simplest way to do this is to connect one end

of the new resistor directly to the terminal of push

button S3 (labelled “RB5”) on the board, and the

other side to a convenient +5 VDC source. The

terminal is indicated in Figure 1.

The resistor is only necessary for PIC18F micro-

controllers. If you are also experimenting with

PIC16 FLASH devices, the resistor may be left in

place without adverse effect. It only needs to be

removed if the logic of your application dictates it.

PICDEM.net

DS80146A-page 1

Related parts for DM163004

DM163004 Summary of contents

Page 1

... RB5 low. Since the PICDEM.net board was originally designed with the PIC16F877 FIGURE 1: LOCATION FOR RESISTOR INSTALLATION  2002 Microchip Technology Inc. Demonstration Kit microcontroller in mind (which does not offer the low voltage option), an explicit pull-up on RB5 was not included. Adding a pull-up resistor when using ...

Page 2

... PICDEM.net Demonstration Kit Software and Firmware Issues: None. DS80146A-page 2 Clarifications and Corrections to the User’s Guide: None.  2002 Microchip Technology Inc. ...

Page 3

... REVISION HISTORY Rev A Document (11/2002) First revision of this document. Hardware issue 1 (PIC18F programming failures).  2002 Microchip Technology Inc. PICDEM.net Demonstration Kit DS80146A-page 3 ...

Page 4

... PICDEM.net Demonstration Kit NOTES: DS80146A-page 4  2002 Microchip Technology Inc. ...

Page 5

... Serialized Quick Turn Programming (SQTP service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system ...

Page 6

... Korea Microchip Technology Korea 168-1, Youngbo Bldg. 3 Floor Samsung-Dong, Kangnam-Ku Seoul, Korea 135-882 Tel: 82-2-554-7200 Fax: 82-2-558-5934 Singapore Microchip Technology Singapore Pte Ltd. 200 Middle Road #07-02 Prime Centre Singapore, 188980 Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan Microchip Technology (Barbados) Inc., Taiwan Branch 11F-3, No ...

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