accessing fram memory

[servo260]

I read at the ramtron page that this memory uses a SPI protocol. Is It the same as I2C?

[mister_e]

i'm actually read the datasheet

it's really I2C or some will call that 2-wire

SPI or Microwire is for 93c serie, some Xicor (the old X2444, S-29220 and many others). Those you need 4 i/o
CS
CLK
SDI
SDO

and those are use with SHIFTIN/SHIFTOUT.

Those Ramtron FRAM are great... they say that you don't need any delay between the write and the read... they run at the same speed than the bus. Great!

[servo260]

Hi, thanks a lot fot the info. I put the wrong values for the resistors. Everithing is working fine now.