ATF1504ASL-20JC84

Overview

The ATF1504ASL-20JC84 is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology. It features 64 macrocells with up to 40 product terms per macrocell and supports 84-pin PLCC packaging. The device operates at a maximum pin-to-pin delay of 20 ns and supports registered operation up to 100 MHz. It utilizes EEPROM technology for reprogramming, offers In-System Programmability (ISP) via JTAG, and supports both 3.3V and 5.0V I/O levels.

Feature Summary

• 64 Macrocells with expandable logic structure supporting up to 40 product terms per macrocell
• In-System Programmability (ISP) via standard 4-pin JTAG interface
• EEPROM non-volatile memory allowing 10,000 program/erase cycles
• Supports 3.3V or 5.0V I/O pins with programmable slew rates

Applications

• Logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant interface designs requiring high current drivers
• Systems requiring in-field design modifications via software
• Boundary-scan testing applications compliant with IEEE Std. 1149.1

Procurement Notes

Verify the specific speed grade suffix (-20) corresponds to the required 20 ns maximum propagation delay. Confirm the JC84 suffix indicates the 84-lead PLCC package variant. Ensure the design toolchain supports the ATF1504AS(L) series for proper compilation and ISP configuration.

Selection Notes

Select this component when 64 macrocells are sufficient for the logic density requirements. Choose the -20 speed grade if the system timing allows for up to 20 ns delays. Verify that the application environment supports the commercial temperature range (0°C to 70°C) specified for this part number.

Part Context

This part belongs to the ATF1504AS/L family of CPLDs from Microchip Technology. The 'L' suffix denotes low-power variants, though specific standby currents vary by mode. The ATF1504 series is designed for high-density applications utilizing Atmel's proven electrically-erasable memory technology.

Replacement Considerations

Direct replacements within the same family include ATF1504AS-20JC84 for identical performance without the 'L' low-power designation. Other package options like 100-lead PQFP or TQFP require different suffixes (e.g., QC100). Cross-family migration may be necessary if higher pin counts or different voltage levels are required.