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Atmel CPLD Test Rig
http://forum.6502.org/viewtopic.php?f=10&t=2219		 Page 1 of 1
Author:  BigDumbDinosaur [ Thu Jul 05, 2012 10:37 pm ]
Post subject:  Atmel CPLD Test Rig
Atmel makes a programmer/tester for their ATF15xx CPLD series, which includes the ATF1508as I plan to use in POC V2. This unit works through a standard Centronics port on a PC and is powered by a 9 volt DC wall wart. Here are some pictures.

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In the above pictures, I have loaded a test fuse map into an ATF1508as, the purpose of which is to exercise some of the outputs and prove that the CPLD and the test rig are working.
Author:  ElEctric_EyE [ Fri Jul 06, 2012 6:15 pm ]
Post subject:  Re: Atmel CPLD Test Rig
That's alot of hardware compared to Xilinx CPLD's which just need a J-TAG port and programming cable and the free software. I think they still have PLCC packages available too.
Author:  BigDumbDinosaur [ Fri Jul 06, 2012 6:28 pm ]
Post subject:  Re: Atmel CPLD Test Rig
ElEctric_EyE wrote:
That's alot of hardware compared to Xilinx CPLD's which just need a J-TAG port and programming cable and the free software. I think they still have PLCC packages available too.

It's a device test rig as well as programmer. If programming is all that is needed a simple JTAG hookup will suffice, like with the Xilinx parts.

I decided to get this unit so I could play around with the logic after written into the CPLD. There are some 7-segment displays, LEDs, push buttons, etc., all of which can be used to see what happens when input X goes high or input Y goes low. There is also an embedded clock generator for testing logic where a clock signal is involved.

Atmel makes different adapters for this unit so various package sizes and types can be supported. The unit ships with a 44 pin PQFP adapter, as well as some sample CPLDs in that package size. The version of the ATF1508as I plan to use comes in a PLCC84 package, so I also got one of those adapters.
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