I am looking for a serial (preferably SPI) plain RAM in an SO8 package. Preferably 8 bit wide by 16k or 32k.  Anyone know of such a chip and where I can get it?  Digi-key does not have anything like it.

 

I am using an SPI serial EEPROM (AT25128) attached to a 18F252 to add memory to store a large sting table.  It does not need to be persistent but I was unable to find any serial plain RAM.  Does it exist?  If not, is there a reason?  My problem is that at 100K write cycles, it will ware out too soon in my application.  The slower writes is acceptable.

 

I am considering switching to a parallel RAM, but I would rather not give up the board space switching an SO8 for an SO32 which would also require switching to the larger 40 pin 18F454 to get more I/O.  On the subject of parallel, does anyone make a 8 bit wide parallel RAM that multiplexes address and data on just 8 pins?

 

Thanks,

 

--BobG

 

 

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