Emailing: mystery chip 608C62.htm - test-drb@ccmp.vtda.org

26 Mar 2008

On Sunday 23 March 2008 18:06, Andrew Lynch wrote:
...
  Hi,

 I found a mystery chip in a pile of stuff.  Apparently, it was an AWARD
 BIOS in a former life.  I can read it in my EPROM programmer and it is read
...
  compatible with a 27C512 (64Kx8 EPROM).  The contents
are consistent with
 an AWARD BIOS for a PC of some sort.

 However, the chip itself is rather unusual.  There is no EPROM quartz
 window, the manufacturer symbol is a triangle, and the number is unlike
 anything I have seen before.  Worse yet, I get no helpful hints on GOOGLE
 when I try.

...
  The chip number is 608C62.  I am guessing it is either
a One Time PROM or a
...
  mask ROM.  Has anyone heard of this or know what
family it is from?

I found it on www.datasheets.org.uk - it's listed as an equivalent to a 
6264 static ram, which sounds plausible...

Julian

...
  I am hoping it was a FLASH ROM or EEPROM but I
can't seem to find anything
 on this chip.  Any hints or help much appreciated!

 Andrew Lynch

-----REPLY-----

Hi Julian, Thanks for looking and the reply.  That is the first place I went
after Google looking for a datasheet.  

The only thing they said though was that I was not the only person who has
searched for the device in the past.

The chip is some sort of ROM because I can read the contents with my EPROM
programmer in 27C512 mode.  No luck on what it is though...

At least it is not unique but it is starting to look a lot like a Mask ROM
to me.

Thanks!

Andrew Lynch