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Curious issues with Mega128L-8 application
Can you make test in your main program, like this instead of code given above: BOOL ReadKey(eKey_t key){ unsigned char f=PINF; PORTA=f; // test out DDRA=0xff; BOOL...
Monday, 12 November 2012 - 17:30
XMEGA wish list
clawson wrote: http://www.freescale.com/webapp/... Thanks, the chip is interesting. But this is not microcontroller - it has no internal program flash memory. gchapman wrote:...
Tuesday, 30 October 2012 - 18:35
XMEGA wish list
Fine remap of pins within port. So any combination of peripheials - UART, SPI, I2C, PWM etc - may by used simultaneously up to when all 8 pins are used. abcminiuser wrote:maksim,...
Tuesday, 30 October 2012 - 04:28
XMEGA wish list
One single adress space for flash and RAM. Whole X, Y, Z pointers in registers (instead of RAMPZ etc wich are not so fast accesible) 16-bit hardware multiple, divide, multiple bit...
Monday, 29 October 2012 - 18:14
Detecting Running Appliances by measuring ONLY Mains I or V
You can know more if you will measure also phase shift between voltage and current, and harmonic distortion of the current. Different devices have different phase shift between...
Saturday, 20 October 2012 - 20:15
Modern general purpose opamp suggestions
May be, now's "general purpose" op-amp is low-voltage relative to the old one, +5 V single supply or +-2,5 V dual supply, rail ro rail.
Tuesday, 11 September 2012 - 17:27
SMT layout question...
crwper wrote: Many of the multi-layer stack-ups I've seen use ground planes on the outside two layers. May be the have 6 or more layers? crwper wrote: That said, with more than...
Monday, 10 September 2012 - 18:52
7 SEGMENT
Geronimo wrote:However what you COULD do, is use just this one resistor, but then multiplex the LEDs you need to turn on one at a time! Each digit have at minimum 2 segments. You...
Saturday, 8 September 2012 - 14:00
SMT layout question...
alank2 wrote: I've done PTH boards by routing as many traces on the top of the board as possible and leaving the bottom layer as a giant ground that is as unbroken as possible....
Saturday, 8 September 2012 - 13:53
Life cycle of Sd card if only read data!
May be only 100000 read cycles for newest / largest cards. Search in internet for "The Inconvenient Truths of NAND Flash Memory".
Tuesday, 28 August 2012 - 03:42
MODBUS broadcast
jayjay1974 wrote:Fundamentally there is nothing that stops you from devising a protocol that allows replies to a broadcast. There will be conflict on the bus if multiple devices...
Friday, 29 June 2012 - 18:40
Automotive Power Supply Regulator Circuit
toalan wrote:The only change I might suggest is using the lm2575, it is a bit cheaper than you current switcher, roughly the same specs except current output is 1A max. But lm2575...
Sunday, 17 June 2012 - 10:28

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