ATF1502ASV-15JU44

Overview

The ATF1502ASV-15JU44 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) via 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

• Complex logic integration replacing TTL, SSI, MSI, or classic PLDs
• High-speed state machine implementations requiring fast registered feedback
• PCI-compliant digital logic control systems
• Hardware design prototyping using automated fitters and Verilog

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package type and temperature rating. Confirm that the procurement source provides genuine components with valid traceability. Check for any recent Product Change Notifications (PCN) regarding packaging or material composition updates. Ensure compatibility with existing JTAG programming hardware if field updates are required.

Selection Notes

Select this model when a 3.3V CPLD with 32 macrocells and industrial temperature tolerance (-40°C to +85°C) is required. The 'J' suffix indicates the PLCC-44 package, while 'U44' confirms the specific variant. Choose the -15 speed grade for designs needing a maximum 15 ns propagation delay and up to 100 MHz clock frequency. Consider the ASVL version if lower power consumption is a primary constraint over maximum speed.

Part Context

This component belongs to the ATF15xx series of high-density CPLDs. It serves as a successor to earlier Atmel PLD families, integrating enhanced routing resources and flexible macrocell architectures. The ATF1502ASV-15JU44 specifically targets applications requiring reliable, reprogrammable logic in harsh environments, leveraging EEPROM technology for non-volatile configuration storage without the need for UV erasure.

Replacement Considerations

The discontinued lead-free ATF1502ASV-15JJ44 was replaced by the ATF1502ASV-15JU44. Both parts share identical electrical specifications and functionality; the replacement offers improved environmental compliance by being both lead- and halide-free. No functional changes are expected during substitution.