Hi, I have tried interfacing 28c64 with 8051 using 74ls573.. exact eeprom ic no. is D28c64c-25. First I wrote a simple program to write single byte in first location of eeprom by tying WR of 8051and WE of 28c64..I kept OE high.. And LE of 74ls573 to ground.. I have connected higher address A8 to A12 from port P2 directly to 28c64..
When I was trying to read the same data by connecting RD of 8051 to OE of 28c64 and leaving WE, WR open it was not getting read....
Can anyone help me out with this problem asap.... Awaiting solution..........
Regards, Sriprabhunath.N