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Topic: Which SPI eeprom >= 512Kbyte? (Read 1 time) previous topic - next topic

roberter

Dear Sirs,

I'm looking for an SPI eeprom with the following perfect specs:

Storage: >= 512kbyte (>= 0.5 MB)
Voltage: 5 Volt
Case: DIP
Endurance: 1,000,000 Program/Erase Cycles

Do you have a recommendation for a "Arduino-Tested" eeprom with this specs?

Thanks in advance!

Robert

CrossRoads

I don't see anything bigger than  64Kx8 at digikey.
Mouser has some 1024Kx8 I2C EEPROMs
http://www.mouser.com/Semiconductors/Memory/EEPROM/_/N-488u2?P=1z0w48kZ1z0z63xZ1z0z7v3&Keyword=eeprom&FS=True
You'll have to read the datasheets to see about the 1,000,000 program cycles if I2C suits your needs.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

pito

#2
May 30, 2013, 05:24 pm Last Edit: May 30, 2013, 05:48 pm by pito Reason: 1
..there is a mram memory, 512kBytes, SPI, 8pin, unlimited endurance, nonvolatile - have a look at everspin.com

http://everspin.com/products.php?hjk=SERIAL&a1f3=4Mb

roberter

CrossRoads:
Thank you for that recommendation!
I prefer SPI because I it is slightly faster. Moreover it save pins for me because the I2C eeprom then would be the only I2C hardware.

pito:
Thank you too very much! As far as I see, the mram runs at 3.3V. I'm looking for 5 Volts.

Ok, so DIP case is not that important. Any other recommendations?

Thank you!

Robert

CrossRoads

Any idea how much the everspin parts are selling for or who distributes them?
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

pito

#5
May 31, 2013, 12:22 am Last Edit: May 31, 2013, 12:27 am by pito Reason: 1
http://it.mouser.com/search/refine.aspx?Ntk=P_MarCom&Ntt=123173628
http://www.futureelectronics.com/en/technologies/semiconductors/memory/mram/Pages/3020797-MR25H40CDF.aspx?IM=0

CrossRoads

Cool, will have to keep those in mind as an alternative to FRAMs.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Mr_arduino

You could check out PCM it meets the SPI and endurence requirments http://www.micron.com/products/phase-change-memory/serial-pcm

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