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Posts Tagged ‘CPLD’

74181 ALU design on Altera MAX II CPLD

Monday, December 21st, 2015

Dilshan Jayakody writes: 74181 is 4-bit arithmetic and logic unit introduced by Texas Instruments in March 1970 and it is known for being the first ALU in single package. This chip is no longer in manufacturing but still it is quite popular in CA (computer architecture) courses in many colleges....

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Posted in Chips, CPLD | 1 Comment »

PyroElectro: Who can build the best P-O-V contest

Tuesday, August 5th, 2014

PyroElectro is currently running a contest for who can build the best handheld or spinning POV device using an FPGA or CPLD. They'll be presenting an example POV using VHDL in Lesson 9 @ PyroEdu. The top prize is a Basys2 Spartan-3E FPGA board valued at roughly $90.00.   Visit...

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Posted in contest | No Comments »

App note: Driving LEDs with Xilinx CPLDs

Sunday, February 16th, 2014

Here's Xilinx app note on using CPLDs to perform the same functionality as those common LED driver chips. Light-Emitting Diodes (LEDs) are commonplace on the modern day Printed Circuit Board (PCB). Whether they are indicating status, activity or some other function, they need to be driven by a device that...

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Posted in app notes | 1 Comment »

App note: Using a microprocessor to configure Xilinx FPGAs via slave serial or selectMAP mode

Sunday, February 16th, 2014

Great app note from Xilinx on configuring their FPGA through slave serial and parallel selectMAP mode This application note describes a technique for configuring an FPGA from an embedded processor. Three common components are required: an embedded microprocessor, some non-volatile memory, and a CPLD. Cost, as well as real estate,...

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Posted in app notes | 7 Comments »

XC2C64A CPLD development board back in stock

Thursday, January 23rd, 2014

CoolRunner-II XC2C64A CPLD development boards are back in stock at Seeed Studio. CPLDs are programmable logic gate arrays which allow you to build custom logic devices simply by programing them. Get the CoolRunner-II development board for $15 and XC9572XL dev-board  for $15.

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Posted in News | No Comments »

App note: CPLD timing

Sunday, January 5th, 2014

See from Xilinx app note the timing constraints on CPLDs. In this application note we will discuss how to constrain a CPLD design and how to verify that the design has met timing. Fundamentally, CPLD timing is the same as FPGA timing; however, the CPLD timing constraints are a subset...

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Posted in app notes | No Comments »

App note: Understanding XC9500XL CPLD power

Sunday, January 5th, 2014

Here's an app note from Xilinx on calculating power consumption for a CPLD. The goal of this application note is to discuss XC9500XL CPLD power estimation and optimization and provide the reader with an understanding of sense-amplifier based CPLD power dissipation. A brief discussion of the process for estimation is...

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Posted in app notes | No Comments »

App note: CPLDs as Motor Controllers

Saturday, January 4th, 2014

Here's a simple motor controller implementation using CPLDs from Xilinx. To enable a CPLD to turn the electromagnets on and off, external transistor drivers must be used. A unipolar stepper motor can be driven by four identical NPN or N-channel drive transistors. The various Xilinx CPLDs can operate with I/O...

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Posted in app notes | No Comments »

App note: Xilinx in-system programming using an embedded microcontroller

Saturday, January 4th, 2014

Program Xilinx' CPLDs and FPGAs with the aid from this app note.By using a simple JTAG interface, Xilinx devices are easily programmed and tested without using expensive hardware. Multiple devices can be daisy-chained, permitting a single four-wire Test Access Port (TAP) to control any number of Xilinx devices or other...

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Posted in app notes | 2 Comments »

XC9572XL CPLD development board back in stock

Tuesday, October 1st, 2013

XC9572XL CPLD development board are back in stock at Seeed Studio. CPLDs are programmable logic gate arrays which allow you to build custom logic devices simply by programing them. Get the XC9572XL dev-board for $15 and CoolRunner-II development board for $15.

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Posted in News | 3 Comments »

XC9572XL CPLD development board back in stock

Friday, November 30th, 2012

XC9572XL CPLD development board v1b are back in stock at Seeed Studio. CPLDs are programmable logic gate arrays which allow you to build custom logic devices simply by programing them. Get the XC9572XL dev-board for $15 and CoolRunner-II development board for $15.

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Posted in CPLD | 3 Comments »

Replace vintage computer hard drives with a CF card

Monday, September 24th, 2012

J1mbo updated his XT-CF adaptation of our XT-IDE CPLD board. You can check out his wiki page with all the details about the board, the BOM, and the source files. This board allows vintage XT computers to use CF cards as hard drives, which keeps lots of old industrial and...

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Posted in CPLD, Development | 22 Comments »

XC9572XL CPLD development board back in stock

Thursday, August 30th, 2012

XC9572XL CPLD development board v1b are back in stock at Seeed Studio. CPLDs are programmable logic gate arrays which allow you to build custom logic devices simply by programing them. Get the XC9572XL dev-board for $15 and CoolRunner-II development board for $15.

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Posted in CPLD | 1 Comment »

CPiLD: CPLD board for Raspberry Pi

Monday, August 6th, 2012

[embed]http://www.youtube.com/watch?v=X91u79wAK4Y&feature=plcp[/embed] Brian designed a CPLD expansion board for the Raspberry Pi. It features a Xilinx XC9572 CPLD, and a i2c buffer connected to Raspberry Pi's GPIO pins, and I2C port. It is designed to extend R-Pi's GPIO, and allow for easy solderless bread board prototyping. CPiLD allows for easy breadboarding...

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Posted in CPLD, dev boards | 5 Comments »

Workshop Update for June 18th, 2012

Monday, June 18th, 2012

Today we worked on the 3D model and rendering of the XC95144XL CPLD breakout board. Later we also made some renders for soon to be released product. We continued routing the Bus Blaster v4 board. We optimized some signal trace lengths, and added ground vias near decoupling caps. We also...

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Posted in Workshop Update | 2 Comments »

3D Model: XC95144XL Breakout Board

Monday, June 18th, 2012

Today we made the 3D model of the XC95144XL CPLD breakout board. The board has 39 of the CPLD pins broken out to a "Blade" style configuration, while the remaining  pins are broken out to two dual-row headers featured on top corners of the board. Check out our tutorial on...

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Posted in 3D Model | No Comments »

DIY IR Toy and CPLD breakout boards

Friday, May 4th, 2012

DIY etched boards are the quickest way to get a project up and running. This is just what Noy did with his IR Toy, and CPLD breakout boards. He modified our projects to a single layer design. Used the toner-transfer method to copy the traces, and etched the boards with...

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Posted in CPLD, DIY, USB IR Toy | No Comments »

CPLD development boards back in stock

Tuesday, April 3rd, 2012

XC9572XL CPLD development board v1b are back in stock at Seeed Studio. CPLDs are programmable logic gate arrays which allow you to build custom logic devices simply by programing them. Get the XC9572XL dev-board  for $15 and CoolRunner-II development board for $15.

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Posted in CPLD | No Comments »

Programing CoolRunner II CPLDs from Windows 7

Monday, April 2nd, 2012

[embed]http://www.youtube.com/watch?v=z7sX88A48IY&feature=player_embedded[/embed] Kiran wrote a short tutorial on how to program the Xilinx CoolRunner II CPLD development board with a computer running Windows 7.  The board features an onboard USB programmer but the drivers for it are not supported by Windows 7. The only way to program the device, without buying...

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Posted in how-to | 5 Comments »

Lattice CPLD development board free PCB built

Thursday, March 29th, 2012

Colfaxmingo built a free Lattice CPLD development board PCB. CPLDs are programmable logic gate arrays which allow you to build custom logic devices by programing them. If you build a free PCB we’ll send you another one! Blog about it, post a picture on Flicker, whatever – we’ll send you...

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Posted in builds | 1 Comment »

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