QW1 TechTools, QW1 Datasheet - Page 25

• Manufacturer Part Number: QW1
• Description: PROGRAMMER PIC MCU QUICKWRITER
• Manufacturer: TechTools
• Series: QuickWriter™r
• Type: QuickWriterr

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

©2006 TechTools
5.1
5
Advanced
In-Circuit Programming
Overview
Details
QuickWriter can be used with single socket and gang programming adapters, but one of its key
features is the ability to program devices already incorporated in a working circuit. To program
devices in-circuit, a few requirements must be met by the target.
For a detailed discussion on the key issues related to in-circuit programming, see the In-Circuit
Programming Guide installed with the QuickWriter software.
NOTE: ICP does not support parallel programmed devices (i.e. PIC16C55, PIC16C57, etc.).
When using the ICP cable (provided with QuickWriter), always select Socket A. If additional
sockets are selected or if socket A is not selected, programming errors will occur.
If any error messages appear during ICP, pay special attention to any messages relating to
voltage errors. QuickWriter performs extensive voltage testing to help prevent damage to itself and
your target. All suggestions presented in the error dialog should be checked thoroughly before
another programming attempt is made.
Target Design Recommendations
In-Circuit Programming Cable Pinout
Use a 10K Ohm or larger pull up on MCLR Use 10uF or less capacitance on MCLR (most
Avoid or isolate any other circuitry that touches the MCLR line.
Ideally, use RB6 (clock), RB7(data) and RB3 (LVP/PGM pin, RB4 or RB5 on some PICmicros)
Always connect the ground pin.
Decide who powers the target and address the trade-offs involved. (see:
When programming, enable the PICmicro MCU's power-up timer Fuse Option if possible.
PIN Number | Signal Name
---------------------------------------------
1.
2.
3.
4.
5.
6.
7.
targets use none).
as OUTPUTs in your circuit design OR connect them to outside-world connections or NO
switches so that nothing is driving them during programming. This avoids any need for
isolation. If that is not desirable, design to isolate or tri-state anything that drives these
lines.
Powered
Particularly if setting the device for internal MCLR or internal OSC.
Targets)
VPP (MCLR)
VDD (+5)
GND ( - )
RB7 (data)
RB6 (clock)
NC
LVP (RB3/RB4/RB5) **
| KEY
RED
White
White
White
White
Pin Block
White
ICP with Self
Advanced
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