programming 24C64A EEPROM.

[mdanh2002]

Hi,

I am having a 24C64A EEPROM (8k x 8) by Atmel. I am trying to program it using a JDM programmer I purchased from ebay some time back (**broken link removed**). Although the programmer has been used to successfully program other types of PIC 16F, it can't program this EEPROM. I tried with WinPIC, ICProg and PonyProg. All 3 of them report no acknowledgment at address 0x00 and could not program.

I am using an old Pentium III 633Mhz computer and have tried on both Windows 98 and Windows XP. The EEPROM model (24c64) is listed in the list of supported devices for the JDM programmer.

Any ideas what's wrong here? Thanks.

 

[mdanh2002]

Any ideas? This EEPROM is using the I2C protocol and my JDM programmer claims to support that. Not sure why it could not work

 

[Diver300]

https://www.atmel.com/dyn/resources/prod_documents/doc3054.pdf

The address seems to be 0xC0.

There are only 7 bits of the address. It starts with 0b1010, then 3 bits set by the levels on pins A2, A1 and A0, then a read/write bit. I don't know how the address is written exactly. It might be 0x60. I am sure that it wouldn't be 0x00