The attached is on the mother board of GM Truck Radio and I am trying to locate the Eeprom chip I searched the numbers but coming up dry Can someone tell what that 8 pin chip is?

 

What makes you think its an EEPROM rather than a pre-programmed ROM? The 64 suggests its a 64Mbit device, i.e. 8Mbytes, but there's not enough info to determine what device it is. The lack of a logo suggests its a custom ROM but that's not a given. If you could identify whats connected to each pin that might help narrow things down.

 

The logo looks like Fairchild. Fairchild made a FM24C64 EEPROM.
Take a wider photo so that we can see if the tracks connecting to the 8-pin package match the pinout.

 

Thanks guys for your response. I am looking to idntify the eeprom on that board in hopes of editing the vin # so I can use it to replace my non working radio. I will get a pic of the board but I have to completely remove it from the case to do so. Will post later. That chip was very difficult to read the numbers off I had to wet it down with 90% alcohol to catch a photo. May have better luck with the board completly removed.

 

Here is a wider view hope it can help

 

There only 2 - 8 pin chips on the board which I have circled ??

 

The logo looks like Fairchild. Fairchild made a FM24C64 EEPROM.

Your eyesight must be better than mine I can't see any logo, just a smudge by pin 8???

 

The first one you brought up does not match that of an EEPROM.
It could be a Fairchild (ONsemi) MOSFET.

 

There are different pinouts for EEPROMs in SOIC-8 package.

 

The first one you brought up does not match that of an EEPROM.
It could be a Fairchild (ONsemi) MOSFET.

View attachment 367595

View attachment 367596

So what of the second one the 15532 6036? Or is there an eeprom on the board? If no eeprom what would be used to store the bios?

 

So what of the second one the 15532 6036? Or is there an eeprom on the board? If no eeprom what would be used to store the bios?

You are assuming that all computers need a BIOS. This is not the case for an embedded system. We need to know what MCU is on board.

We need some more clues. What is the year of manufacture of the board? You can extract clues from the date stamp on the ICs.

Show us a clear photo of the large IC. We need to know what processor chip is used on the board.

 

It's a Philips device, could be a custom job given the likely volumes.

 

You are assuming that all computers need a BIOS. This is not the case for an embedded system. We need to know what MCU is on board.

We need some more clues. What is the year of manufacture of the board? You can extract clues from the date stamp on the ICs.

Show us a clear photo of the large IC. We need to know what processor chip is used on the board.

Here is a closeup of the Large chip hope it helps

 

The smaller multipin chip to the left is a TEF6721HL : Car radio tuner front-end for digital IF, from NXP Semiconductors (Philips as was)
The big chip is a SAF7730HV Car Signal Processor Digital Signal Processor. The /212 suffix suggests its a custom pre-programmed device.

Both are obsolete and no longer manufactured as of 2004.