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Sleep transition from 1. 9V and 2 MHz to 3V and 32 MHz
theusch wrote: So, my quick analysis seems to indicate that go-fast-then-sleep takes 1/3 of the power as plodding along. In your case may be yes. But in this case of the topic-...
Friday, 21 June 2013 - 16:17
ALTIUM mounting holes question
You can use plated holes for screws. Make the pad bigger than the hole so that the Minimum Annular Ring rule will no be violated.
Wednesday, 19 June 2013 - 17:35
Sleep transition from 1. 9V and 2 MHz to 3V and 32 MHz
photonthunder wrote:we are now trying to switch so that we are awake for less time and sleeping more. Hoping to save a little more power. You will not gain power save this way.
Wednesday, 19 June 2013 - 16:46
Sleep transition from 1. 9V and 2 MHz to 3V and 32 MHz
It is not guaranteed that clock may not be stable at 32 MHz at 1.9 V. May be than clock will work 32 MHz at 1.9 V, but CPU will not work at this conditions. Use of ADC to measure...
Tuesday, 18 June 2013 - 18:57
Very weird question Xmega256D3
acelink1 wrote: So using an interrupt I could read a ports input pins in real time and store the result in sram while my main program is doing other things and both are running at...
Monday, 3 June 2013 - 18:04
avr-gcc: New Features?
About 64-bit floating point. What about to make 32-bit float, 32-bit double and 64-bit long double? This will not change an existing code, as of promotion rule for functions with...
Saturday, 1 June 2013 - 19:59
Multi-precision polynomial multiplication
Herc11 wrote: ((y&1)?x:0) ^ ((y&2)?(x<<1):0) ^ ((y&4)?(x<<2):0) ^ ((y&8)?(x<<3):0) ^ ((y&16)?(x<<4):0) ^ ((y&32)?(x<<5):0) ^ ((y&64)?(x<<6):0...
Monday, 20 May 2013 - 18:28
XMEGA E
jan_dc wrote:* what would be the sample rate in 16 bit mode (1024 times oversampling) ADC in XMEGA is 12-bit. 1024 times oversampling gives additional 5 bits, as of 1024=2**10 and...
Thursday, 16 May 2013 - 19:01
Multi-precision polynomial multiplication
Jepael wrote:I don't get how this is any different from multiplying two 128-bit numbers to get a 256-bit number. If they are the same, why not just multiply the numbers together...
Wednesday, 15 May 2013 - 18:40
PCB design guidelines
For me 90 degree bends is not issue due to acid trapping when etching. Impedance issues is not important for not too high frequences. For AVR, impedance should not be issue.
Tuesday, 29 January 2013 - 04:35
Size of Hex file versus program capacity
One line of .hex file, for exaple :105820008D2D99279C01220F331F220F331F220F2A (plus two byte for line ending) takes 45 bytes in the .hex file and represents only 16 bytes of the...
Sunday, 20 January 2013 - 09:27
Resistor voltage divider vs. temperature
Chuck99 wrote: Vout = V(R2/(R1 + R2)) How much would the output vary with temperature if each resistor was spec'd at +/- 100ppm/degree? Even if R1 and R2 are identical, may be...
Tuesday, 8 January 2013 - 19:28

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