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Mega88 program counter: 0x1000 bit set?
I'm developing a program on the Mega88 (the target is a Mega88PA, but the breadboard uses an old Mega88 20PI chip), and it seems to run perfectly well. I put in some trace code...
Sunday, 16 February 2014 - 17:01
Minimal AVRISP mkII setup (no development system needed)
I need to give my customer a way to program 8-bit AVR devices (specifically Mega88PA at the moment) with ready-compiled code which I can send them as a hex or binary file. They...
Wednesday, 12 February 2014 - 18:00
TWI oddities on the AT90CAN128
I seem to have an odd problem with the TWI bus on the AT90CAN128 which I haven't seen with the same program running (with register address changes) on the Mega128. I'm using the...
Wednesday, 27 February 2008 - 16:18
Mega168 RC oscillator inaccuracy
I have a batch of boards using the ATmega168V-10AU flat pack chip, running at 3 volts and 8MHz (nominal) using the internal calibrated RC oscillator. According to the data sheet,...
Monday, 20 February 2006 - 12:03
Mega168 programming lockout
Does anyone know of a way to get an AVR processor out of the condition where it refuses to respond to serial programming commands? This frequently happens when a programming...
Saturday, 28 January 2006 - 11:25
AVR Mega168 serial programming lockout
(Message moved to main AVR forum after complaints of being off topic)
Wednesday, 25 January 2006 - 14:51
DIL breadboard adaptor for Mega128?
Does anyone know of an off-the-shelf adaptor from a TQFP64 ZIF socket to a 64-pin DIL plug, suitable for connecting a Mega128 to a DIL breadboard? The ZIF socket needs to be a...
Monday, 9 January 2006 - 11:30
Efficient 32-bit divide by 10 with remainder
Does anyone have a fast AVR assembler algorithm to divide a 32-bit unsigned number by 10 with remainder, i.e. as required for simple decimal output conversion? The traditional...
Sunday, 13 November 2005 - 11:18
Writing to AVR signature bytes?
I have a Mega16 on which I have somehow managed to erase all of the signature bytes to FF. It happened when I ran a program which had been assembled for the RAM layout of a...
Saturday, 8 October 2005 - 14:38
Problems with Mega48/Mega88 async timer
Has anyone else seen this problem? A Mega48 or Mega88 is running on the internal RC oscillator (8MHz) with timer 2 set up as asynchronous from a 32.768KHz watch crystal, and...
Wednesday, 21 September 2005 - 22:56