Hmmm - took a while to find the doc referenced below. Looks like no go. :-| Looks like they saved room/complexity on the die and didn't include the ICD= peripheral. http://ww1.microchip.com/downloads/en/DeviceDoc/51292g.pdf DEVELOPING WITH ICD DEVICES An ICD device on a corresponding MPLAB ICD 2 header is used to emulate regular (non-ICD) devices. E.g., the PIC12F675-ICD on the 8-pin header is used to emulate the regular PIC12F675 device for debug operation. The ICD device has an integrated ICD peripheral. The ICD peripheral is not available in regular (non-ICD) devices; therefore these regular PICmicro devices cannot be used directly with the MPLAB ICD 2. The ICD device uses the ICD pin to enable the background debug mode. (See =93Schematics=94 on page 5.) -----Original Message----- From: Charles Craft Sent: May 27, 2004 2:15 AM To: PICLIST@MITVMA.MIT.EDU Subject: [PIC:] 12F629/675 ICD Does the paragraph below mean that a standard 12F629/675 absolutely won't w= ork with ICD or that it's a big inconvenience but if you don't need the pins then go rig= ht ahead. http://ww1.microchip.com/downloads/en/DeviceDoc/41190c.pdf 9.11 In-Circuit Debugger Since in-circuit debugging requires the loss of clock, data and MCLR pins, MPLAB=C2=AE ICD 2 development with an 8-pin device is not practical. A special 14-pin PIC12F675-ICD device is used with MPLAB ICD 2 to provide separate clock, data and MCLR pins and frees all normally available pins to the user. This special ICD device is mounted on the top of the header and its signals are routed to the MPLAB ICD 2 connector. On the bottom of the header is an 8-pin socket that plugs into the user=E2=80=99s target via the 8-pin stand-off connector. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics