ATF1502ASL-25JC44

Overview

The ATF1502ASL-25JC44 is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) from Microchip Technology. It features 32 macrocells with up to 40 product terms per macrocell and operates within a 4.5V to 5.5V supply range. The device provides a maximum pin-to-pin delay of 25 ns and supports registered operation up to 60 MHz. It utilizes advanced EEPROM technology for 10,000 program/erase cycles and includes in-system programmability via JTAG. The component is housed in a 44-lead PLCC package and supports industrial temperature ranges.

Feature Summary

• 32 Macrocells with flexible D/T latch configurable flip-flops and global control signals
• In-System Programmability (ISP) via standard 4-pin JTAG interface
• Advanced power management including automatic standby and pin-controlled power-down modes
• PCI-compliant output drivers with programmable slew rate control

Applications

• High-density logic integration replacing TTL, SSI, MSI, or LSI components
• PCI-based interface designs requiring high current drive capabilities
• Complex state machine implementations with fast registered feedback
• Systems requiring non-volatile configuration with field-upgradeable logic

Procurement Notes

Verify the specific suffix 'JC44' against official Microchip documentation to confirm the exact package type (PLCC vs TQFP) and temperature grade. Ensure design files account for the 'L' variant's low-power characteristics, such as the 10 µA standby current. Confirm JTAG boundary-scan compatibility if using third-party programming hardware.

Selection Notes

Select this model for applications requiring 32 macrocells and 44 I/O pins with a 25 ns speed grade. The 'L' suffix indicates low-power variants with reduced standby current compared to standard AS versions. Consider the enhanced routing resources and foldback bus for complex logic functions. Verify that the 5V supply voltage aligns with system requirements, as the device does not support 3.3V operation.

Part Context

This part belongs to the ATF1502AS(L) family of high-performance CPLDs. It shares architectural similarities with the ATF1500 series but offers enhanced routing matrices and additional features like input transition detection. The device is designed for backward compatibility with existing Atmel/Microchip PLD software tools while providing improved connectivity and power efficiency.

Replacement Considerations

Direct replacements include other ATF1502AS variants with different speed grades (e.g., -7, -10, -15) or packages (TQFP). For lower power requirements, consider the ATF1502ASL series. Ensure any substitute maintains the 44-pin footprint and EEPROM-based non-volatility.