> Van: Goovaerts > Aan: PICLIST@MITVMA.MIT.EDU > Onderwerp: NVM's, I'm a little bit in the dark here ! > Datum: woensdag 18 augustus 1999 19:24 > > Can anyone help me on my way with NVM's ?? I have to read out the two pages > of an NVM --> X24C04 . This particular NVM has only two pages of 256 bytes, > each with its own slave address. These slave addresses for the pages are : > > A0 and A2 --> Why do they differ by two ?? Hello Glen, First, it's not A0 _and_ A2, but A0 _thru_ A2. Which means adress-lines A0, A1 and A2. Those together form a 3-bit adress, resulting in 8 possible page-adresses. The first byte send to the 24cXX memory (after the start-signal) is made up like this: 1010AAAD . Where AAA is the adress equal to the adress set on pin's 1 thru 3 of the IC, and "D" is the direction, or Read/Write bit. Greetz, Rudy Wieser