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EE > prj_universal_cpld
document updated 18 years ago, on Apr 5, 2006
XESS XS40-* boards

Lab setup recommendations. Power supply provides 0.5A. Suggest getting a logic analyzer. XS40-005XL can be upgraded to a XS40-010XL by buying a different part from Xilinx.

Disabling the microcontroller

Breadboard recommendations (ACE327 minimum)

Do NOT get the polairty wrong

Slow FPGA

How the VGA and LED share the same pins

More FPGA connections can be had when the microprocessor is disabled.

The 3.3v tolerant FPGAs can input 5v. Here's how to get 5v on output as well.



Bill of materials
	$130  XS40-005XL, FPGA w/ 3.3v (5v tolerant), 9,000 gates (upgradable to 20,000) w/ 32KB SDRAM
	 $56  3G ACE-327 breadboard
	 $25  Xilinx Foundation Student Edition 2.1i (after $30 discount)  (maybe just use some of this?)
	 $17  AT17C256 Serial EEPROM
	   -  9V wall transformer power supply