AVR Programmer and Microcontroller Connections

Development Boards MicroMod
1

Hello,

I have the Sparkfun Pocket AVR Programmer. Is the Xmega128a1 supported by this programmer?

For the Atmel 6-pin ISP header, there are some SPI signal pins such as MISO and MOSI. My question is; which pins on the microcontroller (atmega168 for example) should I connect these pins to in order to program the device?

Some AVRs have Programming via SPI feature, but my microcontroller does not support this feature. I think connecting the ISP header pins to the SPI pins of the microcontroller is a wrong way to go…

I will be pleased if someone can give a connection diagram between ISP header and microcontroller.

Last question; in the datasheet of the Xmega128a1, it is written that programming is supported via PDI and JTAG. So, should I use the PDI pins to connect the ISP header? If so, how should I connect them? I am confused because the PDI port has a bidirectional signal.

Thank you.

2

You need a programmer that supports PDI or JTAG for the Xmegas.

3

I have found the AVRISP mkII programmer. The atxmega devices exist in the programmer’s product page, in the related devices section:

http://www.atmel.com/dyn/products/tools … ol_id=3808

Can I use this programmer to program my xmega? If yes, should I program the device over SPI pins?

For PDI interface, there are two pins PDI_CLK and PDI_DATA. How should I connect them to the 6-pin ISP header?

4

See the datasheet. If you look for ICSP it will tell you which pins are data in, data out and clock. Very often it will coincide with the SPI-pins, but not always. I learned the hard way that the the mega128 has separate pins for programming.