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.
http://www.atmel.com/dyn/resources/prod_documents/DOC0936.PDF
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...
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.
http://www.amazon.com/exec/obidos/tg/detail/-/0131103628/qid=1092082975/sr=8-1/ref=pd_ka_1/002-3528674-6266465?v=glance&s=books&n=507846
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...
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,...
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...
Go to this link. http://www.atmel.com/dyn/resources/prod_documents/DOC0936.PDF
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...
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...
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...
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...
Connect a precision resistor in the current loop (200 ohm, 100mW or greater, tolerance
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...
Let's see if this link works. http://www.amazon.com/exec/obidos/tg/detail/-/0131103628/qid=1092082975/sr=8-1/ref=pd_ka_1/002-3528674-6266465?v=glance&s=books&n=507846
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.
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...
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