On Mon, April 2, 2012 2:48 am, Veronica Merryfield wrote: > > On 2012-04-01, at 10:48 PM, Sergey Dryga wrote: > >> Veronica Merryfield gmail.com> writes: >> >>> >>> I am looking for suggestions for an MCU to the following leading >>> features >>> 1. SMT, 4mm by (4mm or 5mm or 6mm or whatever) >>> 2. 2x I2C links (both running about 36KBytes/s) >>> 3. 1x 8-bit ADC or better >>> 4. Lowest power consumption possible >>> >>> I have come across a few candidates but am looking for possible >>> alternatives. >>> >> >> PIC16(L)F1826/27 seem to fit the bill. UQFN package is 4x4x0.5 mm, 2x >> hardware >> I2C, 10-bit ADC, XLP. >> Close second is PIC18F46J11. > > That was where I had got to and have looked at Atiny range and MSP430. > Just wanted to make sure I hadn't missed any other contenders. As far as = I > can tell so far, an MSP420 device bit-banging will take a bit more power > than the PIC especially if I can make the PIC sleep while the I2C hardwar= e > does it's thing. Still looking into that. Are you sure about the 2 I2C links at 36KBytes/s? If you're running that fast, you'll be getting an interrupt every 28uS for each I2C peripheral- not a lot of cycles in between to do much else, and if you have to bit-bang the I2C- I don't think you'll have have time for anything else. Also, are these I2Cs master or slave? Bit-banging a slave is a lot more timing sensitive. Matt Bennett Just outside of Austin, TX 30.51,-97.91 The views I express are my own, not that of my employer, a large multinational corporation that you are familiar with. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .