DS51795A Datasheet, PDF (64/98 Pages) Microchip Technology – PICkit™ 3 Programmer/Debugger

PICkit™ 3 User’s Guide
10.4 USB PORT/POWER
The PICkit 3 programmer/debugger is connected to the host PC via a mini Universal
Serial Bus (USB) port, version 2.0 compliant. The USB connector is located on the top
of the pod.
The system is capable of reloading the firmware via the USB interface.
System power is derived from the USB interface. The debugger is classified as a high
power system per the USB specification, and requires slightly more than 100 mA of
power from the USB to function in all operational modes (debugger/programmer).
Note: The PICkit 3 programmer/debugger is powered through its USB
connection. The target board is powered from its own supply. Alternatively,
the PICkit 3 can power it only if the target consumes less than 30 mA.
Cable Length – The PC-to-debugger cable length for proper operation is shipped in
the debugger kit.
Powered Hubs – If you are going to use a USB hub, make sure it is self-powered. Also,
USB ports on PC keyboards do not have enough power for the debugger to operate.
PC Hibernate/Power-Down Modes – Disable the hibernate or other power saver
modes on your PC to ensure proper USB communications with the debugger.
10.5 PICKIT 3 PROGRAMMER/DEBUGGER
The debugger consists of a main board enclosed in the casing with a USB connector
and a single in-line connector. On the debugger enclosure are indicator lights (LEDs).
10.5.1 Main Board
This component has the interface processor with integrated USB 2.0 interface capable
an SPI, serial EE for programming into the emulation device on-board Flash and LED
indicators.
10.5.2 Indicator Lights (LEDs)
The indicator lights have the following significance.
LED
Power
Active
Status
Color
Green
Blue
Green
Yellow
Red
Description
Lit when power is first applied or when target is connected.
Lit when the PICkit™ 3 has established communication with the
PC or sending/receiving commands.
Lit when the debugger is operating normally – standby.
Lit when an operation is busy.
Lit when the debugger has failed.
DS51795A-page 60
© 2009 Microchip Technology Inc.