ATF1504AS-10AU44

Overview

The ATF1504AS-10AU44 is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) from Microchip Technology. It features 64 macrocells with up to 68 inputs and 32 I/O pins in a 44-lead TQFP package. The device supports In-System Programmability (ISP) via JTAG and offers flexible logic structures including D/T/Latch configurable flip-flops and global control signals. Key electrical parameters include a maximum propagation delay of 10 ns, a maximum operating frequency of 125 MHz, and operation at 5V or 3.3V I/O levels.

Feature Summary

• 64 Macrocells with 5 product terms each, expandable to 40 via cascade logic
• In-System Programmability (ISP) using IEEE Std. 1149.1 JTAG interface
• Maximum pin-to-pin delay of 10 ns with registered operation up to 125 MHz
• Supports both 5.0V and 3.3V I/O voltage levels

Applications

• Logic integration for TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant interface designs requiring high current drivers
• Boundary-scan testing and system-level diagnostics

Procurement Notes

Verify the specific suffix 'AU44' corresponds to the 44-lead TQFP package and Industrial temperature range (-40°C to +85°C) as defined in official ordering information. Confirm power supply requirements match the target application's VCCINT and VCCIO specifications.

Selection Notes

Select this component when design complexity requires 64 macrocells and high-speed performance up to 125 MHz. Ensure the 44-pin TQFP footprint fits the PCB layout. Consider the -10 speed grade if propagation delays under 10 ns are required for critical timing paths.

Part Context

This part belongs to the ATF1504AS/L family of CPLDs. The 'A' denotes enhanced routing resources and features compared to earlier versions. The 'S' indicates standard power consumption, while 'L' variants offer low-power standby modes. The 'U' suffix specifies the TQFP package type.

Replacement Considerations

Direct replacements within the same family include ATF1504AS-7AU44 (faster speed) or ATF1504AS-15AU44 (slower speed). Cross-package equivalents like ATF1504AS-10JC84 (PLCC-84) require pinout adaptation.