Post Created date
xmega - sample I/O pin at 74Mhz?
I calculate only ~12K samples. A FIFO like this: http://search.digikey.com/script... Could hold 18 channels of data for that time period. You could also rig up something using...
Tuesday, 22 September 2009 - 19:03
xmega - sample I/O pin at 74Mhz?
No, not much can, including many ARMs. You can buy a dedicated FIFO buffer chip which will allow you to latch data into it based on an external clock however.
Tuesday, 22 September 2009 - 18:45
First circuit ever (eagle schematic). Will it work?
Be aware that switching regulators will require suitable component selection and PCB layout. :)
Monday, 21 September 2009 - 23:05
First circuit ever (eagle schematic). Will it work?
The biggest fault I find is the lack of voltage specifications for the battery, and how you are managing supply voltages.
Monday, 21 September 2009 - 21:10
Writing to flash
You can attach MRAM to the xmega external bus, and use it like SRAM, but non volatile. Runs up to 35ns timing to boot. The downside is cost: 128KB runs $15 on DigiKey (qty 1)
Monday, 21 September 2009 - 21:07
Does 6pin ICSP header offer everything I need atmega328P?
Virgin chips are set to use the internal oscillator (8MHz) divided by 8 (CKDIV8 fuse). In any case, you can usually get the device to spin its wheels by injecting a logic level...
Monday, 21 September 2009 - 18:33
Does 6pin ICSP header offer everything I need atmega328P?
Yes, you can. As long as you don't do something silly and pick an incompatible oscillator setting (like low frequency external).
Monday, 21 September 2009 - 18:07
XMEGA
No real updates on them. Lots of people seem to be having issues with buggy silicon these days - even TI's MSP430F5438 has some big "this feature basically is broken, don't use it...
Sunday, 20 September 2009 - 19:33
First circuit ever (eagle schematic). Will it work?
As stated before: - Reset pullup - ISP header - Decoupling cap on the AVR. Now the big questions: What is Vbatt? Is it in range for all of your devices? Remember a 1.5V alkaline...
Sunday, 20 September 2009 - 19:16
ATMEGA128 Power Problem
If you're powering right from a wallwart make sure it's a regulated switchmode model.
Sunday, 20 September 2009 - 03:28
USB Atmel device - made to look like a coms port
davidguest wrote: Has anyone used the internal RC to generate the 8Mz for the 48MHz PLL - and whether its accurate or stable enough. Its not. USB is very picky about timing.
Friday, 18 September 2009 - 16:38
CAN Bus
cmicro wrote: I had a look at docs from your links. Its just mind blowing. From the readings, I get that the can 2.0B is 29 byte wide. CAN 2.0B specifies IDENTIFIERS of 29 BITS (...
Friday, 18 September 2009 - 16:35

Pages