Atmel ATV2500B Manuals

This document describes how to use the features of the ATV2500 and ATV2500B in the ABEL (and Atmel- ABEL) and CUPL (and Atmel-CUPL) high level description languages. The ATV2500 and ATV2500B are the most powerful programmable logic devices available in a 40/44-pin package. They combine high density and global routing, making them easy to use and understand. Both devices have 24 macrocells, each with three sum terms, two regis- ters, and 17 product terms. Each register has individual clock and AR product terms. Each I/O pin has a programmable polarity control and an individual output enable product term. Independent feed- back paths from each register allow all of the registers to be buried without wasting the I/O pins. A universal bus routes all input and feedback signals to all product terms on all macrocells. The ATV2500B has the additional features of D- or T-type configurable registers, three dif- ferent clock options, and buried combinatorial nodes.

Atmel announced the availability of the ATF2500C, the highest density CPLD available in a 40-pin or 44-pin package. The ATF2500C is reprogrammable using Atmel's proven EE-based technology and is pin-compatible with the ATV2500B/BQ/BQL/BL which were OTP devices. The ATV2500B/BQ will be replaced by ATF2500C for commercial and industrial grade devices.