ATF1504AS-10AC44

Overview

The ATF1504AS-10AC44 is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) from Microchip Technology. It features 64 macrocells with up to 40 product terms per macrocell and supports up to 68 I/O pins. The device operates at a maximum pin-to-pin delay of 10 ns and registered frequencies up to 125 MHz. It utilizes EEPROM technology for in-system programmability via JTAG, offering 10,000 program/erase cycles and 20-year data retention. The component is available in commercial temperature ranges and supports both 3.3V and 5.0V I/O standards.

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 compliant with IEEE Std. 1149.1
• Maximum propagation delay of 10 ns with registered operation up to 125 MHz
• Advanced power management including automatic standby modes and pin-controlled power-down

Applications

• Logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant interface designs requiring high current drivers
• Boundary-scan testing and system-level diagnostics using JTAG
• State machine initialization with built-in power-up reset features

Procurement Notes

Verify the specific package type and voltage rating during procurement. The suffix 'AC' indicates a 44-lead TQFP package with commercial temperature range (0°C to 70°C). Confirm that the design compiler settings match the required speed grade (-10) and that JTAG pins are configured correctly if boundary-scan functionality is not utilized.

Selection Notes

Select this model when a 44-pin surface-mount solution is required with a 10 ns speed grade. Ensure the application supports either 3.3V or 5.0V I/O levels as specified by the VCCIO supply. For industrial temperature requirements (-40°C to 85°C), the 'L' variant suffix must be selected instead of the commercial 'A' suffix.

Part Context

This component belongs to the ATF1504AS family of high-density CPLDs. It shares architectural similarities with other variants in the series, differing primarily in package lead count (44, 68, 84, 100) and speed grades (-7, -10, -15, -20, -25). The ATF1504AS-10AC44 specifically denotes the 44-lead TQFP package variant optimized for commercial applications.

Replacement Considerations

Direct replacements within the same family include ATF1504AS-7AC44 (faster speed) or ATF1504AS-15AC44 (slower speed). For industrial temperature ranges, consider ATF1504ASL-10AC44. Pin-compatible alternatives may exist in newer Microchip CPLD families, but verification of I/O voltage compatibility and macrocell architecture is required.