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Discussion Title Created date
Re-initialization of global/static variables
I'm familiar with the C standard and the avr-libc FAQ about automatic initialization of global/static variables ( http://www.nongnu.org/avr-libc/u... ). However, I have a question...
Friday, 26 October 2007 - 03:39
Time Stability of Internal RC Oscillator
Many thanks to the Freaks who helped out with initial questions about the accuracy of the internal RC Oscillator. I've read AVR053 and successfully used the source code/procedure...
Friday, 12 October 2007 - 21:30
Accuracy of internal RC oscillator for RS-232
I'd like to use a ATTiny25 MCU to sending RS-232 output using the internal RC oscillator. I'm familiar with choosing clock crystals with zero error-rate divisors as well as using...
Monday, 8 October 2007 - 18:42
Interrupt flags and reenterantcy
I have an application (Tiny25) that uses INT0 rising/falling edge interrupts. During the INT0 ISR, a pin is multisampled, so the ISR requires 30usec. The application also sends...
Monday, 8 October 2007 - 17:55
Recommended ISP programmer for 20-pin SOIC ATTiny2313
I'm doing a production design using the ATTiny2313 SOIC package. I'm looking for a ZIF programmer for the chip. At the moment, I'm considering using an SOIC to PDIP adapter ( http...
Tuesday, 14 August 2007 - 19:50
Recommended IBIS simulator
I'm working on a high-performance design. With the help of KKP in https://www.avrfreaks.net/index.p... , I found the IBIS models for the AVR microcontrollers. I'm leaning towards...
Tuesday, 24 July 2007 - 21:35
Rise time for AVR GP port pins
I'm looking for the documented rise times on AVR general purpose port pins. As an example, in the ATMega644 datasheeet, I've found rise times documented for External Clock, TWI,...
Monday, 9 July 2007 - 16:07
Simpler switched constant current source?
I need to create a constant current source (~40ma) for a load that can be switched on and off. Since this will be for a precision device, rather than just measuring the voltage...
Friday, 6 July 2007 - 20:15
ATEVK1100 board now available for pre-order at Digikey
I placed an order for the UC3-based ATEVK1100 development board ( http://www.atmel.com/dyn/product... ) today. The Digikey part number is ATEVK1100-ND with current "lead time" of...
Monday, 7 May 2007 - 22:41
STK 1000 PS/2 voltage converter
I want to use the PS/2 keyboard port of the STK1000 to connect to a PS/2 keyboard. Has anyone found a 3.3V PS/2 keyboard that could be used with the STK1000? Alternately, does...
Monday, 7 May 2007 - 22:37
Some GPIO to source and some to sink current
I'm building a circuit using a ATMega644 (40ma per pin, 400ma total between VCC and GND) and wish to drive a 10-bar LED graph among other devices. I was thinking of limiting of...
Monday, 12 March 2007 - 14:56

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