You can connect the AT28C64 EEPROM to your micro just like what you do to a regular SRAM. You can read it the same way you read a regular SRAM. The difference is when you write to it, you need special routines. I use two routines. One does the One_Byte_Write, the other does the Block_Write. You need to check the 64-byte page boundary and possibly disable interrupts during the Block_Write. Since EEPROMs have limited life cycles, you want to read before you write, and if what you read is the same as what you want to write, then skip the write process.