Header Identification
The AC number is used for ordering the Processor Extension Pak, which contains the debug header. However, this number is not on the header, as the board may be used for multiple headers by inserting different -ICE/-ICD devices. To identify these headers, use the following information.
| AC Number | -ICE/-ICD Device | Board Assembly Number |
| AC162088 | PIC24FJ64GA004-ICE | 02-01979 |
| AC162094 | 02-01982 |
Header Setup and Operation
Both 28-pin and 44-pin device headers have jumpers related to the enabling or disabling of the on-chip 2.5 volt voltage regulator. Please see the section entitled “On-Chip Voltage Regulator” in the “dsPIC33F Family Reference Manual” (DS70165) for more details.
| Jumper | Function |
| 1-2 | Disable voltage regulator |
| 2-3 | Enable voltage regulator |
| No connection | DISVREG controlled by target |
Test points are available on this header to check the following:
| Test Point | Color | Signal | Test Point | Color | Signal |
| TP1 | Black | Ground | TP5 | White | DISVREG |
| TP2 | Red | Vdd | TP6 | White | PGC |
| TP3 | Black | AVss | TP7 | White | PGD |
| TP4 | Red | AVdd | TP8 | Yellow | ICRST |
Header Limitations
Sometimes a header device (-ICE/-ICD) has operational issues or errata. To determine if a device on a header has limitations, see your hardware tool documentation.
Header Dimensions
The figure below lists the dimensions for the debug header. Dimensions are design values in inches.
If the length and/or width of the debug header is too large a footprint for the target board, consider using stand-offs, transition sockets or other extenders in the header connection socket to raise the header above the target.
Figure: Dimensions (28 Pin) – AC162088
Figure: Dimensions (44 Pin) – AC162094
