ATF1500AL-20AC

Overview

The ATF1500AL-20AC is a high-performance, high-density Electrically Erasable Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology. It features 32 logic macrocells and up to 36 inputs within a 44-pin TQFP package. The device operates on a +5V supply with a maximum pin-to-pin propagation delay of 7.5 ns and supports registered operation at frequencies up to 125 MHz. Built on advanced Flash technology, it offers complete reprogrammability with 100 program/erase cycles and 20-year data retention. Key power management features include an automatic 3 mA standby mode for the AL variant and a pin-controlled power-down option.

Feature Summary

• High-speed performance with 7.5 ns max pin-to-pin delay and 125 MHz registered operation
• Advanced Flash memory architecture allowing 100 program/erase cycles and 20-year data retention
• Flexible macrocell design with D/T/Latch configurable flip-flops and global/regional busses
• Power management including automatic 3 mA standby and pin-controlled power-down mode

Applications

• Logic integration replacing TTL, SSI, MSI, and classic PLDs
• State machine initialization and control logic
• Arithmetic and compare functions using XOR gate capabilities
• System noise reduction applications via programmable output slew rate control

Procurement Notes

Verify component authenticity through authorized Microchip distributors or direct channels. Confirm RoHS compliance status as the datasheet indicates Green package options are available but standard versions may vary. Check for obsolescence notices, as older speed grades in this family have been superseded by newer models like the ATF1502AS. Ensure design files account for the specific commercial temperature range (0°C to 70°C) associated with the 'AC' suffix.

Selection Notes

Select the ATF1500AL-20AC when low-power standby is critical, as the 'AL' suffix denotes the 3 mA automatic standby feature compared to higher current consumption in non-L variants. Choose this part over the ATF1500A-20AC if system power efficiency during inactive periods is a priority. Ensure the design utilizes the 44-lead TQFP package constraints. For industrial temperature ranges (-40°C to 85°C), consider the AI suffix instead. Verify that the 32 macrocells and fully connected global bus architecture meet the logic density requirements of the application.

Part Context

This component belongs to the ATF1500A series of high-performance EPLDs from Atmel (now Microchip). It is backward compatible with ATF1500/L software and hardware tools. The series includes variants with different speed grades and package types, such as PLCC and TQFP. The ATF1500AL specifically adds enhanced power-saving features while maintaining the core logic architecture of the standard ATF1500A.

Replacement Considerations

For the 7 ns speed grade, the ATF1502AS is a pin-compatible replacement. For other speed grades, suggested replacements are available in Green packages. Consult the ordering information section for specific cross-references based on required speed and temperature range.