>From what I've read, it seems that the traditional way to add memory to
>a PIC is to use EEPROM, rather than SRAM or DRAM.  Now I know that DRAM
>can be a pain, but is EEPROM preferable to SRAM for any particular
>reason, beyond power considerations?

        Serial E2 can be accessed with as few as two I/O lines without
        the need for external circuitry.

        E2 package dimensions are small.

        E2 will hold its contents during power-fail.

        E2 is cheap.

On the other hand...

        Reads from E2 are slow.

        Writes to E2 are v_e_r_y slow.

        Writes to E2 are limited to between 10^6 and 10^7 cycles.

For a data logging application, the write time and write endurance can be
the deciding factors.

___Bob