Atmel's EPLD product line comprises of two major categories — SPLDs and the higher density CPLDs.

Atmel SPLDs
Atmel's SPLD products consist of industry standard 16V8, 20V8 and 22V10s in a variety of voltage and power-saving options. Atmel offers low-voltage, zero-power and quarter power versions as well as our proprietary "L" (low-power) devices. All popular packages are supported in addition to the Atmel-only, TSSOP package — the smallest package offered for any SPLD device. All versions are EE-based for high-reliability and easy re-programming and are supported by all popular third party programmers.

Atmel CPLDs
ATF1500AS Family
The ATF1500AS CPLD family offers pin-compatible supersets of the popular Altera 7000 series devices ranging from 32 to 128 (soon to be 256) macrocells with propagation delays from 7.5 to 15 ns for 5-volt standard power versions and 15 ns for 33-volt versions. All products are available in low voltage versions and Atmel's proprietary low-power ("L"). All devices also support JTAG in- system programming (ISP). Converting an Altera EPM7000 series design is easy with Atmel's POF2JED software utility that will generate an industry standard JEDEC programming file from an Altera POF file. The POF2JED software is available at no charge from the Atmel web-site.

Not only can the ATF1500AS family provide an easy alternate source to your Altera designs, but the super-set features offered make these products ideal for new designs. The ATF1500AS family offers the most powerful switch matrix and routing resource of any CPLD while also supporting individual output enable, global clear and D/T/latch configurable flip-flops. More global clock pins, a programmable pin-keeper and the ability to support five product terms per macrocell (expandable to 40) are further examples of the enhanced features available from this CPLD product family.

Proprietary CPLDs
Atmel also offers the ATF750C/CL and ATV2500B CPLDs. The ATF750C has twice the logic of a standard 22V10 in a pin-out compatible 24 or 28-pin package. The ATF750C is ideal for those 22V10 designs that need a bit more logic than is offered in a 22V10 device — but need to maintain the 22V10 pin-out. The ATV2500B is a very high-density (2500 usable gates) 44-pin CPLD ideally configured for the most difficult 44-pin designs.

For more information about Atmel EPLDs, please check the overview section below.