system
March 14, 2011, 11:53pm
1
Hi guys ,
ATMEL 718
I typed ATMEL 718 into google and it came up with Atmel datasheet pdf catalog - Page 8
i scrolled down and looked at the data sheet for 718 and it says it is a 2wire eeprom.
if this is so i can use it but as the other part numbers dont match i am asking if anyone here knows what it might be or if i am correct ?
Chris
westfw
March 15, 2011, 12:09am
2
A 93C66 is a common serial eeprom chip...
4k bits (512 bytes)
It can be a bit tricky to find the part number among the other stuff that chip vendors like to print on their chips...
cmiyc
March 15, 2011, 12:11am
3
The 718 number on the link you provide seems related to the site and nothing to do with Atmel.
Instead, I went to atmel.com and typed in what looked like an actual part number "93C66" and found what looks like the actual datasheet for the part: http://www.atmel.com/dyn/resources/prod_documents/doc0172y.pdf
It looks like it has a command to prevent future programming. It is possible that the part is no longer writeable. The protocol to talk to the chip looks pretty straightforward, if there isn't already a library for it.
system
March 15, 2011, 12:13am
4
Many thanks for that but unfortunately according to the data sheet it is a 3 wire interface
And i wonder what it was doing on an old ISA sound card ?
Saving settings for soundblaster maybe?
3-wire interface - that's just SPI. Clock, Data out (MOSI) and data in (MISO), and chip select.
Probably have to issue an Erase/Write Enable command before you can change any memory locations.
system
March 16, 2011, 12:07pm
6
Thanks crossroads I will investigate
