ATF1502AS-7JC44

Overview

The ATF1502AS-7JC44 is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology. It features 32 macrocells with up to 36 inputs and 32 bi-directional I/O pins in a 44-pin PLCC package. The device operates at a maximum pin-to-pin delay of 7.5 ns and supports registered operation up to 125 MHz. It utilizes advanced EEPROM technology for complete reprogrammability, offering 10,000 program/erase cycles and 20-year data retention. Key specifications include a 5V supply voltage, JTAG-based In-System Programmability (ISP), and support for PCI-compliant interfaces.

Feature Summary

• 32 Macrocells with 5 product terms each, expandable to 40 via cascade logic
• 7.5 ns maximum pin-to-pin delay with 125 MHz registered operation frequency
• In-System Programmability (ISP) via standard 4-pin JTAG interface
• Advanced power management including automatic standby and pin-controlled power-down modes

Applications

• PCI-compliant interface designs requiring high current drivers
• Complex logic integration replacing TTL, SSI, MSI, or LSI components
• State machine initialization and control logic with power-up reset features
• Boundary-scan testing and system verification using IEEE Std. 1149.1

Procurement Notes

Verify the specific suffix '7JC44' against official Microchip documentation to confirm the -7 speed grade, commercial temperature range, and 44-lead PLCC package configuration. Ensure design files account for the 5V operating voltage and JTAG pin allocation if ISP functionality is required during deployment.

Selection Notes

Select this component when a high-density CPLD with fast 7.5 ns propagation delay is needed within a 44-pin PLCC footprint. Consider the ATF1502ASL variant if lower power consumption is critical, as it offers automatic standby modes. Verify that the design compiler supports the enhanced routing resources and buried feedback features for optimal logic utilization.

Part Context

This part belongs to the ATF1502AS family of high-performance EEPROM CPLDs. It shares architectural similarities with other devices in the series but is distinguished by its specific speed grade (-7) and package type (JC44). The device is designed to integrate logic from various legacy programmable devices while providing modern ISP capabilities.

Replacement Considerations

Direct replacements must match the 32 macrocell count, 44-pin PLCC package, and 7.5 ns speed grade. Verify compatibility with existing JTAG programming infrastructure and ensure the replacement supports the same 5V supply voltage and industrial/commercial temperature ranges.