QW1 TechTools, QW1 Datasheet

QW1

Manufacturer Part Number

QW1

Description

PROGRAMMER PIC MCU QUICKWRITER

Manufacturer

TechTools

Series

QuickWriter™r

Type

QuickWriterr

Datasheets

1.QW1.pdf (221 pages)

2.QW1.pdf (6 pages)

3.QW1.pdf (33 pages)

4.QW1.pdf (1 pages)

Specifications of QW1

Contents

MCU Programmer with In-Circuit Serial Programming Cable and Optional GANG Adapters

For Use With/related Products

PIC Micro® MCU

For Use With

CBL-ICSP - CABLE PROG QUICKWRITER SERIALQW-4SSOP18 - ADAPTER QUICKWRITER 4GANG 18SSOPQW-4SSOP28 - ADAPTER QUICKWRITER 4GANG 28SSOPQW-4SO8/14W - ADAPT QUICKWRTR 4GANG 8/14SOIC WQW-4SO8/14N - ADAPT QUICKWRTR 4GANG 8/14SOIC NQW-4SOIC18 - ADAPTER QUICKWRITER 4GANG 18SOICQW-4ZIF18 - ADAPTER QUICKWRITER 4-GANG 18ZIFQW-4SOIC28 - ADAPTER QUICKWRITER 4GANG 28SOICQW-4PLCC44 - ADAPTER QUICKWRITER 4GANG 44PLCCQW-4ZIF40/28 - ADAPT QUICKWRITER 4GANG 40/28ZIFMP-ZIF14 - ADAPTER QUICKWRITER 14-PIN ZIFMP-SOIC8/14 - ADAPTER QUICKWRITER 8/14-SOICMP-SSOP18 - ADAPTER QUICKWRITER 18-SSOPMP-SSOP28 - ADAPTER QUICKWRITER 28-SSOPMP-14000 - ADAPTR QUICKWRTR PIC14000 28-PINMP-SOIC18 - ADAPTER QUICKWRITER 18-SOICMP-SOIC28 - ADAPTER QUICKWRITER 28-SOICMP-PLCC44 - ADAPTER QUICKWRITER 44-PIN PLCCMP-ZIF18/28 - ADAPTER QUICKWRITER 18/28PIN ZIFMP-ZIF40 - ADAPTER QUICKWRITER 40-PIN ZIF

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

QW152

Manufacturer:

Laird Technologies IAS

Quantity:

135

Current page: 1 of 6
Download datasheet (110Kb)

In-Circuit Programming with QuickWriter™

V1.3

This is an application note describing how to design your target for proper in-circuit programming with a

QuickWriter.

THE’IDEALS’

The IDEAL programming environment varies widely, depending on whose perspective you take.

Programming hardware’s Ideal

From the Programming hardware’s perspective, the ideal setup is a chip in a socket, with nothing

else attached to the chip. This gives the programming hardware full control over the process,

eliminating any unknowns.

The next best setup is a chip in a target board with all of its signals isolated from the target during

programming.

Firmware Developer’s Ideal

The firmware developer’s ideal would be to ignore programming issues. He would not want to

give up any pins or make any concessions to accommodate in-circuit programming. In-circuit or

in-socket is a production issue.

Hardware Developer’s Ideal

The hardware developer would like to simply attach a programming connector to the appropriate

signals (or even clip a connector over the chip) and forget about it. He would like to use all of the

signals in the target without worrying about what the programmer might need.

THE REALITY

In-circuit programming is more complicated than in-socket programming. It is possible to use a

programmer that was not designed for in-circuit programming if the hardware designer takes

extreme measures to make the device appear to be in-socket. In other words, completely isolate

the device from the target during programming. Although this is possible, it is rarely done. The

reality is that NONE of the IDEALs are ever realized.

In-circuit programming support must be designed into the programming hardware AND the target

hardware.

Related parts for QW1

QW1 Summary of contents

Page 1

In-Circuit Programming with QuickWriter™ This is an application note describing how to design your target for proper in-circuit programming with a QuickWriter. THE’IDEALS’ The IDEAL programming environment varies widely, depending on whose perspective you take. Programming hardware’s Ideal From the ...

Page 2

IMPLEMENTATION QuickWriter is designed to make In-Circuit programming as hassle free as possible. It allows the hardware and firmware developers to come as close to their ideals as possible and still do reliable in-circuit programming. QuickWriter includes several features to ...

Page 3

DESIGNING FOR IN-CIRCUIT PROGRAMMING In addition to the in-circuit support built into QuickWriter, there are still a few basic requirements on the target to make it in-circuit programmable. The following defines the key issues related to each signal involved in ...

Page 4

VCC (2) Who powers the target possible to do in-circuit programming with the programmer powering the target or with the target powering itself. There are trade-offs and limitations with each choice. Programmer Powered The programmer can provide up ...

Page 5

Self Powered This is often the best choice. It eliminates any concern over back-feeding power supplies or about multi-voltage targets being partially powered. It most closely mimics the target’s intended operational modes. However, there is one situation in which programmer ...

Page 6

... Always connect the ground pin - Decide who powers the target and address the trade-offs involved. - Enable the PICmicro MCU’s power-up timer if possible. Particularly if using a device with internal MCLR. QuickWriter is a trademark of TechTools. PIC and PICmicro are trademarks of Microchip Technology Inc. ...

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