ATF1502ASV-15JI44

Overview

The ATF1502ASV-15JI44 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 operates within a 3.0V to 3.6V supply range. The device provides a maximum pin-to-pin delay of 15 ns and supports registered operation up to 77 MHz. It utilizes advanced EEPROM technology for in-system programmability via JTAG, offering 10,000 program/erase cycles and 20-year data retention. The component is housed in a 44-lead PLCC package and is rated for industrial temperature ranges from -40°C to +85°C.

Feature Summary

• 32 Macrocells with 5 product terms each, expandable to 40 via cascade logic
• In-System Programmability (ISP) using standard 4-pin JTAG interface
• Programmable Pin-keeper option to prevent floating inputs and reduce power consumption
• Pin-controlled standby mode reducing current to 0.75 mA

Applications

• Logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant system designs requiring high-density logic
• Industrial control applications operating in extended temperature environments

Procurement Notes

Verify the specific ordering suffix 'JI44' corresponds to the Industrial temperature range (-40°C to +85°C) and the 44-lead PLCC package. Confirm that the design compiler settings match the required speed grade of 15 ns. Ensure JTAG programming hardware compatibility with IEEE Std. 1149.1 standards for in-system programming workflows.

Selection Notes

Select this model when 32 macrocells are sufficient for the logic density requirements. The 15 ns speed grade is suitable for applications requiring up to 100 MHz maximum clock frequency. Consider the PLCC package if through-hole or specific footprint constraints exist. Verify that the 3.3V operating voltage aligns with the system power supply rails.

Part Context

This part belongs to the ATF15xx series of CPLDs, which utilize Atmel's proven electrically-erasable technology. The ATF1502ASV variant specifically enhances routing resources and includes features like global clock pins and flexible macrocell configurations. It serves as a drop-in replacement for older PLD technologies while offering reprogrammability and lower power consumption.

Replacement Considerations

The discontinued lead-free ATF1502ASV-15JJ44 was replaced by ATF1502ASV-15JU44. For industrial temperature requirements, ATF1502ASV-15JC44 is the commercial equivalent but requires a 15% derating of ICC. No direct functional substitutes are listed; verify pinout compatibility if considering alternative CPLD families.