The ICD supported devices within the PIC16C and PIC16F families, and supported full speed execution, or single step interactive debugging.

The ICD connected to the engineer's PC via RS-232, and connected to the device via ICSP. The MPLAB ICD is the first in-circuit debugger product by Microchip, and is currently discontinued and superseded by ICD 2. The ICE is a family of discontinued in-circuit emulators for PIC and dsPIC devices, and is currently superseded by the REAL ICE. The REAL ICE emulator is similar to the ICD, with the addition of better debugging features, and various add-on modules that expand its usage scope. It is the most popular combination debugging/programming tool from Microchip. The ICD family of debuggers has been produced since the release of the first Flash-based PIC microcontrollers, and the latest ICD 3 currently supports all current PIC and dsPIC devices.

The MPLAB series of devices are programmers and debuggers for Microchip PIC and dsPIC microcontrollers, developed by Microchip Technology.

Mplab icd 3 usb driver windows 7