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Simulating dual-ported SRAM with two pieces of SRAM
Hi, I am thinking of using two 32KB parallel SRAM chips as two banks, switching between writing and reading by two micro-controllers. One of the micro-controllers will be the...
Friday, 7 December 2012 - 18:35
Substituting a MOSFET with a NPN or PNP?
Hi, Please see the attached schematic (part of) that has T2, T3, and T4 using a MOSFET for amplifying the signal -- that is my guess, as I am not familiar with MOSFET at all. Ok...
Tuesday, 21 August 2012 - 19:59
Some basic multimeter questions -- not usage--but design
Ok, Say I would like to make a simple multimeter, maybe just voltmeter at first, with the ATMEGA8, which can take up to 5V. How would I make my voltmeter to measure even 24V...
Sunday, 17 June 2012 - 23:49
How to protect code being read with ATMEGAs and ATTINies?
Hi, To narrow down the question. How I would prevent firmware from being read from my ATMEGA8, TINY2313, ATTNY85, ATTINY84, etc.? I understand that by enabling the RSTDISBL fuse...
Sunday, 20 May 2012 - 18:49
BRNE 1 cycle or 2 cycles
Hi, I am using the ATMEGA8 at 16Mhz. The datasheet says that the instruction BRNE can take 1 or 2 cycles. Does BRNE below take one or two cycles? I believe it the offset to...
Sunday, 6 May 2012 - 06:28
What does "rjump ." mean?
I see the assembly instruction "rjmp ." with a dot '.' after the 'rjmp'. Does this mean it simply like a no-op jump but takes two cycles?
Friday, 4 May 2012 - 03:53
How would I connect a crystal to the ATTINY13?
Hi, The ATTINY13 does not have an XTAL1/XTAL2 pin but just a CLKI. Can I simply attach two 22pF to each of the crystal's terminals and connect in series one of the crystal's...
Saturday, 21 April 2012 - 13:19
Lots of questions on the CS4334 stereo DAC
Hi all, I am looking to do a sound/music project, basically streaming PCM data to the CS4334 stereo 2-channel DAC. The CS4334 datasheet is at http://www.cirrus.com/en/pubs/pr......
Friday, 13 April 2012 - 05:35
How can I disassemble a hex file?
This is for the ATMEGA8 hex file. Is there is a really good disassembler? Thanks
Thursday, 22 March 2012 - 00:20
Can JTAGICE MkII programmer use to program the ATTINY10?
Hi, I've looked over the net. And all I can find is that AVRISP MkII programmer can be used to program the ATTINY10. What about the JTAGICE MkII, which I have?
Saturday, 25 February 2012 - 10:50
How can I get my AT32UCL064 I/O pin to source 3.0V?
Hi, I am able to make a LED program run on my AT32UCL064 device. I measure the voltage coming out of the I/O pin, and it's about 1.5V (almost to 1.6V), which is what the spec...
Sunday, 12 February 2012 - 02:25
Can't read fuses of my AT32UCL064 device from AVR32 Studio
I am using JTAGICE MkII with AVR32 Studio. Every time I try to read the fuses for the AT32UCL064, AVR32 Studio says the below: Could not read fuses Cannot run program "...
Friday, 10 February 2012 - 05:46