Hello, I have very little foot print to put anything let alone a eeprom. I'm looking for a tiny 1k or less eeprom. Just enough to hold between 8 byte 8 numbers to 16. I can't find nothing out there to work with arduino unless it's one of these 6 to 8 pins eeprom that won't fit on my board because of the size.
So my question is does anything one know of a 3 to 4 pin tiny eeprom that I can use with arduino?
Joseph
How much space have you got to work with?
You can get EEPROMs is other packages than PDIP such as TSSOP etc. Microchip have an I2C EEPROM - AT24C01D that is 1kbit (128 bytes) in a 5-Lead SOT23 package:
Analog Devices have some 1-wire EEPROMS such as a DS2431 that are 3-pin devices in a TDFN package that is 3mm x 3mm.
@markd833 I did find AT24C01D-STUM-T on mouser https://www.mouser.com/ProductDetail/Microchip-Technology/AT24C01D-STUM-T?qs=E2PpAYvlWVs%2F1zxPcfxsRg%3D%3D That will work for my foor print. I just need to figure out some code for it now
You might want to start with Rob Tillaarts I2C EEPROM library:
@markd833 That will help me out big time. Thank you.
Maybe using a version of the Arduino family that contains EEPROM could save space?
There are some “one wire” eeproms, like https://ww1.microchip.com/downloads/en/DeviceDoc/22067J.pdf
@Railroader that is true. However If needed to I can transfer it to another board if my main board fails for unknown reason.
Hey @westfw Thank you I’m looking at them as well.
have a look at esp32-save-data-permanently-preferences
also look at FRAM
You don't seem to have mentioned which processor you're planning to use. AVR based processors have built-in EEPROM. And EEPROM emulation might be another option.
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