ATF1502AS-10JI44

Overview

The ATF1502AS-10JI44 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 5V power supply range. The device supports In-System Programmability (ISP) via JTAG and offers a maximum pin-to-pin delay of 10 ns. Registered operation reaches up to 100 MHz. It includes advanced power management features such as automatic standby and pin-controlled power-down modes. The component is housed in a 44-lead PLCC package.

Feature Summary

• 32 Macrocells with expandable logic structure
• In-System Programmability (ISP) via JTAG interface
• Maximum 10 ns pin-to-pin propagation delay
• Pin-controlled power-down mode reducing current to <5 mA

Applications

• PCI-compliant interface designs
• Complex state machine implementations
• TTL/LSI logic replacement
• High-speed digital control systems

Procurement Notes

Verify the specific suffix 'JI44' against official Microchip documentation to confirm package type and temperature grade. Ensure design files account for JTAG pin allocation if ISP is required. Check for RoHS compliance status in current datasheets.

Selection Notes

Select this model for applications requiring 32 macrocells and 5V operation. Consider the ATF1502ASL variant if lower standby current is critical. Verify that the 44-lead PLCC package fits the PCB footprint constraints.

Part Context

This part belongs to the ATF1502AS family of EEPROM-based CPLDs. It shares architectural similarities with other devices in the series but differs in I/O count and package options. It serves as a drop-in replacement for older PAL/GAL logic in moderate complexity designs.

Replacement Considerations

Direct substitutes include other ATF1502AS variants with different speed grades or packages. Cross-referencing with ATF1502ASL is necessary for low-power requirements. Verify pin compatibility when replacing with newer generation CPLDs.