ATF1500A-7JC

Overview

The ATF1500A-7JC is a high-performance, electrically erasable complex programmable logic device (CPLD) manufactured by Microchip Technology. It features 32 macrocells and up to 36 inputs within a 44-pin Plastic J-leaded Chip Carrier (PLCC) package. The device operates at a maximum pin-to-pin delay of 7.5 ns and supports registered operation frequencies up to 95 MHz with external feedback. Built on advanced Flash technology, it allows for complete reprogrammability with 100 program/erase cycles and 20-year data retention. The component functions at a nominal 5V supply voltage and is rated for commercial operating temperatures ranging from 0°C to +70°C.

Feature Summary

• High-density architecture with 32 flexible logic macrocells and a fully connected global input/feedback bus.
• Advanced Flash memory technology enabling 100% testing, full reprogrammability, and 2000V ESD protection.
• Integrated power management including automatic standby mode and optional pin-controlled power-down reducing current to under 10 mA.
• Programmable pin-keeper circuits prevent unused I/O lines from floating, eliminating the need for external pull-up resistors.

Applications

• Replacing legacy TTL, SSI, MSI, and classic PLD logic functions in digital systems.
• Implementing state machines requiring initialization via power-up reset circuitry.
• Designs requiring low-power standby modes or pin-controlled power-down capabilities.
• Applications needing flexible D/T/Latch configurable flip-flops with global or individual register control.

Procurement Notes

Verify the specific ordering suffix 'JC' confirms the 44-lead PLCC package and commercial temperature range (0°C to 70°C). Confirm that the design software supports backward compatibility with existing ATF1500/L source files if migrating from older variants. Check for end-of-life status as the datasheet indicates time-buy dates for certain speed grades.

Selection Notes

Select the ATF1500A-7JC when a 7.5 ns maximum propagation delay and 95 MHz external feedback frequency are required. Ensure the application fits within the 32 macrocell limit and utilizes the 44-pin footprint. Consider the ATF1502AS as a pin-compatible replacement if higher density or different speed grades are needed for industrial applications.

Part Context

This component belongs to the ATF1500A series of Electrically Erasable Programmable Logic Devices (EEPLDs). It is designed to be backward compatible with the earlier ATF1500/L family regarding software and hardware. The 'JC' suffix specifically denotes the 44-lead PLCC package option and commercial temperature rating, distinguishing it from TQFP packages or industrial temperature variants.

Replacement Considerations

The ATF1502AS is identified as a pin-compatible replacement for fast-speed grade devices. For other specifications, suggested replacements are available in Green packages. Verify pin compatibility and electrical characteristics before substituting.