accessing fram memory

[mister_e]

your adress must be 8 bits long.. not much. And you don't need to change you control word... PBP will do it for you.

also refer to your datasheet about the Twrite delay. some will need few milliseconds before the write cycle is finish.

so try

i2cwrite sda, scl, %10100000, 0, [5]
pause 10 ' safe delay
i2cread sda, scl, %10100000, 0, [circunferencia]

[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.