Post Created date
AVR ISP. SS, how to use SPI with ISP connector?
If you are going to run SS to your combo SPI/ISP connector, then you should route it to pin 3 on the 10 pin connector. This pin is unused on most ISP programmers. In addition,...
Thursday, 19 August 2004 - 18:25
On Chip Debugging AvrStudio 4 STK500
If it's not to late to change your design, I would recommend that you replace your 8515 with a MEGA16. It has twice the flash, twice the ram, more timers and A/D. It also has a...
Thursday, 19 August 2004 - 03:58
need a divider command
Go to this link.
Thursday, 19 August 2004 - 03:44
anyone using MLF packages?
We are using a MLF32 for the MEGA48 with no thermal issues. In fact, we haven't been soldering the bottom of the package to the PCB. We are running 8MHZ @ 5V. However, we have low...
Wednesday, 18 August 2004 - 21:29
jtag emulator
If you want an inexpensive JTAG debugger and don't want to build your own, look at Olimex. Their AVR-JTAG-L is only $39.95 (US). Mine has been working great for almost a year now...
Wednesday, 18 August 2004 - 21:13
Negative Differential Inputs on the ATMega169
Although it may seem strange, any of the inputs ADC0-ADC2 can be either the positive or negative input to the diff amp. The first differential mux selection (10000) uses ADC1 the...
Sunday, 15 August 2004 - 15:39
Messure 4 - 20 mA with AVR HOW ?
Transducers producing a 4-20mA output have a characteritic called "compliance". Compliance is the ability of the transducer to raise it's output voltage supplying the current loop...
Friday, 13 August 2004 - 03:42
Messure 4 - 20 mA with AVR HOW ?
Connect a precision resistor in the current loop (200 ohm, 100mW or greater, tolerance
Wednesday, 11 August 2004 - 23:31
tiny 26 attiny26 emulator
The new ATJTAGICE mkII will not work with the TINY26. However, It will work with the new TINY25 (which is not released yet). Recently, I changed my TINY26 design to a MEGA48...
Wednesday, 11 August 2004 - 03:30
Where can I found some literature about C???
Let's see if this link works.
Monday, 9 August 2004 - 20:23
Mega48 reset pin set as IO
Once reset has been disabled or turned into an I/O pin, then ISP is disabled. Parallel programming is the only way to reset the fuse and recover the part.
Monday, 9 August 2004 - 19:08
Programming question!
The only way that the "default" case gets executed is if the value read on InputPort is not 0x01, 0x02, 0x04, or 0x08. I was assuming that when a switch was closed, that the...
Saturday, 7 August 2004 - 16:11