参数资料
型号: DV164120
厂商: Microchip Technology
文件页数: 29/86页
文件大小: 0K
描述: KIT STARTER PICKIT 2
产品培训模块: Asynchronous Stimulus
标准包装: 1
系列: PICkit™ 2
类型: 微控制器
适用于相关产品: PIC Micro? MCU
所含物品: 板,PICkit? 2 编程器,线缆,CD
产品目录页面: 658 (CN2011-ZH PDF)
PICkit 2 Programmer Getting Started
FIGURE 2-18:
AUTOMATING BUTTONS
2.12.1
Auto Import Hex + Write Device Button
This features allows the PICkit 2 Programmer application to automatically import a hex
file and write it to a connected device when the hex file is updated; for example, on a
new firmware build.
To use this feature, click Auto Import Hex + Write Device . This will bring up an Import
Hex file dialog defaulting to the first hex file in the file history under the File menu. After
selecting a file, it will be written to the device. The PICkit 2 Programmer application will
now monitor the selected hex file for updates. When the file has been updated (has a
newer time stamp), the application will automatically re-import the hex file and write to
the target device.
While this feature is enabled, other programming operations are disabled. The Auto
Import Hex + Write Device button will remain depressed while this feature is active.
To stop using this feature, click Auto Import Hex + Write Device again.
If an error is encountered during hex file importing or device programming, the
application will automatically exit this feature mode.
2.12.2
Read Device + Export Hex File Button
When clicked, this button will read the target device and open an Export Hex File
dialog.
2.13
PICKIT 2 CALIBRATION AND UNIT ID
The PICkit 2 V DD may be calibrated to account for variations in the unit hardware and
the USB voltage of the port it is connected to. A Unit ID string may also be assigned to
a PICkit 2 unit to provide unique identification.
2.13.1
Calibrating the PICkit 2 V DD
Calibration allows greater accuracy both in the V DD voltage supplied to the target from
PICkit 2, and the voltage detected on a powered target and reported in the software.
The calibration is stored in the PICkit 2 unit nonvolatile memory, so the unit will remain
calibrated even when used from within MPLAB IDE.
It is important to note, however, that as the calibration is dependent on the USB voltage,
moving the PICkit 2 unit to a different USB port, to or from a USB hub or to another
computer port may invalidate the calibration.
To calibrate the PICkit 2 unit, a multi-meter or other means of accurately measuring
voltages is required. Disconnect the PICkit 2 unit from the target and select
Tools>Calibrate Vdd & Set Unit ID… to bring up the calibration wizard. Follow the steps
in the wizard to complete the calibration process.
Note:
? 2008 Microchip Technology Inc.
Even when calibrated, the PICkit 2 V DD voltage is limited by the available
USB port voltage. PICkit 2 is unable to provide a V DD voltage greater than
a Schottky diode drop below the USB port voltage. This voltage can be as
low as 4.2 Volts, especially in laptop computer ports.
DS51553E-page 25
相关PDF资料
PDF描述
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DV164131 KIT STARTER PICKIT 3
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