ATF1500A-15JI

Overview

The ATF1500A-15JI is a high-performance, high-density electrically-erasable complex programmable logic device (CPLD) manufactured by Microchip Technology. It features 32 logic macrocells and up to 36 inputs within a 44-pin PLCC package. Built on advanced Flash technology, the device supports sequential logic operation at speeds up to 125 MHz with a maximum pin-to-pin delay of 7.5 ns. It operates at a supply voltage of 5V ± 10% and functions within an industrial temperature range of -40°C to +85°C. The architecture includes fully connected input and feedback logic arrays, global and regional buses, and flexible macrocell configurations.

Feature Summary

• High-density CPLD with 32 macrocells, 32 I/O pins, and 4 dedicated inputs in a 44-lead PLCC package.
• Maximum pin-to-pin delay of 7.5 ns supporting registered operation up to 125 MHz.
• Advanced Flash technology providing 100 program/erase cycles, 20-year data retention, and 2000V ESD protection.
• Flexible macrocell design with D/T/Latch configurable flip-flops and programmable output slew rate control.

Applications

• Integration of TTL, SSI, MSI, and classic PLD logic functions.
• Complex state machine implementations requiring fast internal feedback.
• System logic replacement in industrial environments (-40°C to +85°C).
• Designs requiring low-power standby modes and pin-controlled power-down capabilities.

Procurement Notes

Verify component authenticity through authorized Microchip distributors or direct channels. Confirm the specific ordering suffix matches the required package (44J for PLCC) and speed grade (-15 for 7.5 ns delay). Check for RoHS compliance status as standard packages may differ from Green package options. Ensure storage conditions account for humidity sensitivity if applicable. Validate that the industrial temperature range meets system environmental requirements.

Selection Notes

Select the ATF1500A-15JI when a 7.5 ns maximum delay and 125 MHz registered frequency are required for industrial applications. Choose this part over commercial variants if operating temperatures below 0°C are necessary. Consider the 44-lead PLCC package for through-hole mounting needs. Evaluate the 32 macrocell capacity against design complexity; larger designs may require higher-density devices like the ATF1504AS. Verify power consumption requirements, noting the automatic standby mode reduces current during inactive periods.

Part Context

The ATF1500A series belongs to Microchip's Electrically-Erasable Programmable Logic Device family, utilizing non-volatile Flash memory. This allows complete reprogrammability without UV erasure. The device is backward compatible with older ATF1500/L software and hardware tools. It serves as a drop-in replacement for many legacy PLDs due to its pin-compatible design and global bus architecture, which simplifies logic placement and eliminates pinout changes during design iterations.

Replacement Considerations

For faster speed grades, the ATF1502AS is a pin-compatible replacement. For other specifications, consult Microchip for suggested replacements in Green packages. Verify pin compatibility and electrical characteristics before substituting. Ensure the replacement device supports the required industrial temperature range and package type.