ATF1504AS-10AI44

Overview

The ATF1504AS-10AI44 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 44 pins in a TQFP package. The device offers a maximum pin-to-pin delay of 10 ns and registered operation up to 125 MHz. It utilizes In-System Programmability (ISP) via JTAG, supports 3.3V or 5.0V I/O, and includes advanced power management features such as standby modes and programmable pin-keepers.

Feature Summary

• 64 Macrocells with expandable logic capacity up to 40 product terms per macrocell
• In-System Programmability (ISP) via standard 4-pin JTAG interface
• Maximum propagation delay of 10 ns with registered operation up to 125 MHz
• Supports both 3.3V and 5.0V I/O voltage levels

Applications

• Logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant interface designs requiring high current drivers
• Boundary-scan testing and system debugging via IEEE Std. 1149.1

Procurement Notes

Verify the specific ordering suffix 'AI44' against official Microchip documentation to confirm package type and temperature range. Ensure design files include necessary flags for features like power-up reset hysteresis if required. Confirm that third-party programmers can disable the JTAG port if additional I/O pins are needed.

Selection Notes

Select this component for applications requiring high-density logic in a compact 44-pin surface-mount package. Consider the 10 ns speed grade for systems operating below 125 MHz. Evaluate power requirements against the available standby and reduced-power modes. Verify compatibility with 3.3V or 5.0V supply rails based on system I/O standards.

Part Context

This part belongs to the ATF1504AS/L family of CPLDs, which utilize Atmel's proven electrically-erasable memory technology. The family provides flexibility through flexible logic macrocells, global control signals, and enhanced routing resources. It is designed for easy integration into various digital logic applications while supporting field modifications via ISP.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult Microchip documentation for potential cross-references within the ATF1504AS series or newer generations.