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Need 3,3V from lithium cell, 10uA to occasional 8mA step-up?
Hi, In one of my hobbyist projects, I want to make a datalogger, but this time one of the sensors runs from 3,3 to 6V, ratiometric. I want to power the whole system from it (...
Wednesday, 1 October 2008 - 14:25
Low power 3V battery powered device, dual supply from USB?
Hi, I have a datalogger using dataflash and atmega plus CR2032. Small size and weight is a priority. Small power consumption is an important bonus. In order to save power I use...
Wednesday, 1 October 2008 - 14:17
ATMEGA88: power save disrupts USART output despite TXC0 use
Hi, I am trying to make ATMEGA88 sleep as deep as possible while printing a charecter on USART every 100ms. Internal RC oscillator, 8MHz, 3,3V etc. The funny part is that despite...
Monday, 29 September 2008 - 22:06
Are the V versions (low voltage ATMEGA) consuming less mA?
This doesn't comes out clearly form the datasheet, but when comparing apples to apples, is ATMEGA1280V consuming the same power at 3,3V as ATMEGA1280 (let's say external...
Saturday, 20 September 2008 - 21:04
Which AVR has ISP MOSI/MISO mapped to non-SPI pins (AT128)?
There is a catch in ATMEGA128: its MOSI/MISO pins of the SPI programmer are mapped to RX0/TX0 pins. I was unable to find by datasheet which atmegas have similar mapping. There are...
Friday, 19 September 2008 - 00:33
SPI hardware slave on 20MHz ATMEGA88 conn to ATMEGA128
HI, I am trying to communicate 20MHz ATMEGA88 and 16MHz ATMEGA128. I believe I have mastered both atmegas pretty well. On 88 I have several external interrupt ISR and SPI receive...
Wednesday, 30 July 2008 - 18:36
How to ensure ISP programming having 2 uC wired via SPI
Hi, I have the following PCB design problem: one ATMEGA88 and one ATMEGA128, connected via SPI (in normal operation 128 asks 88 periodically for specific data). Both have their...
Sunday, 27 July 2008 - 22:28
Delay needed between ADC channel change in ATMEGA128?
Hi, I want to capture the inputs from all 8 ADC channels as fast as possible, then take some time to process the data (I want to process geometrically dependent signal, so I...
Friday, 14 March 2008 - 00:40
Missing bits in ADC converter on ATMEGA32 DIP, not in PIC16
Hi, I have a problem that I cannot solve after digging datasheet for days. Apparently, ATMEGA32 DIP40 has a lots of missing bits, sometimes the ADC value jumps from 0 to 7 to 15...
Thursday, 28 February 2008 - 19:34
Choosing the most procesing power among AVR - DIP package
Hi, I am starting small research project and prefer to have overequipped AVR to try all peripherals, but I put accent on processing power on this family (I want to test the max...
Thursday, 31 January 2008 - 15:29

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