Features of the CPLD Development board Ver. 2.4

With this device you can easily design additional digital circuitry to add to your projects for Arduino, Raspberry and any other microcontroller board operating at both 5V and 3.3V.

Xilinx's ISE suite allows you to simply draw the digital circuit you are interested in, and transfer it to the CPLD. Once tested, the circuit can be transferred to the target circuit by simply pulling out the CPLD with an extractor, and inserted it on the final socket.

You can't do this with other TQFP or other SMD package versions.

It is not necessary to know the VHDL language or the Verilog, because the whole circuit can be simply drawn. In the pictures an example of a simple LCD interface (plain glass 7 segment LCD) with serial SPI input. An excellent starting point for those who want to deepen their knowledge of digital electronics.

• Each pin of the CPLD has been reported on two strings of side pins of 20 pins each.
• The board for sale is the first one with crystal oscillator option drawn on the PCB. The others are older versions used to show some possible use of the board.
  
• The CPLD is an XC9572XL of the Xilinx type of PLCC44 and can be extracted from the socket using an extractor.
• The card must be powered at 5V DC, it's equipped with a 3.3V regulator to power the CPLD.
• The card has an adjustable RC oscillator with a minimum frequency of 4 Hz, connected to the P5 / CK1 pin
• A place for an oscillator´s socket is provided on the board as second, high frequency, oscillator option and its output is connected to CK2, the third oscillator input can be connected through the 20 pin connectior on the left.
  
• The two red and green poles of a two-color LED are mounted on pins P1 and P2 respectively for the first operation checks.
• The arrangement of the pins in the JTAG connector allows direct connection via 10-pin flat cable to the "Platform Cable USB Model DLC9G" programmer. The programmer is easily available on ebay at reasonable prices.
• Inputs and outputs of the CPLD even if operating at 3.3V are in any case TTL compatible.
• Tolerant 5V inputs and the outputs however reach the TTL switching level.
• The dimensions of the card are 80mm X 100mm with 4 M3 holes on the corners for mounting support towers (NOT INCLUDED).
• The kit includes an USB power cable and a small mini manual.
• User manual available in english, german and french in the product's web site.
• The kit does not include other stuff other then the board, the power cable and the mini manual.
• Lesson 105 of LBE Books (youtube) show you how to produce vga signals as depicted in the last two pictures. 

Further information is available at: http://www.while1.eu/murano/murano.html http://www.while1.eu/murano/murano.html