9.3 Device Configuration Information

The Device Configuration Information (DCI) is a dedicated region in the program memory mapped from 3C0000h to 3C0009h. The data stored in these location is read-only and cannot be erased. Refer to the table below for the complete DCI table address and description. The DCI holds information about the device, which is useful for programming and Bootloader applications.

The erase size is the minimum erasable unit in the PFM, expressed as rows. The total device Flash memory capacity is (Erase size * Number of user-erasable pages).

Table 9-3. Device Configuration Information for PIC18FxxQ24 Devices
AddressNameDescriptionValueUnits
PIC18F24Q24PIC18F25/45/55Q24PIC18F26/46/56Q24
3C 0000hERSIZErase Page Size128Words
3C 0002hWLSIZNumber of write latches per row0Words
3C 0004hURSIZNumber of user erasable pages64128256Pages
3C 0006hEESIZData EEPROM memory size512Bytes
3C 0008hPCNTPin Count2828/40(1)/4828/40(1)/48Pins
Notes:
  1. Pin Count value of 40 is used for 44-pin parts as well.