ATF1504AS-15JI68

Complex Programmable Logic Devices Overview

The ATF1504AS-15JI68 is a high-performance, electrically-erasable complex programmable logic device (CPLD) manufactured by Microchip Technology. It features 64 macrocells with up to 40 product terms per macrocell and supports 68 I/O pins in a 68-lead PLCC package. The device offers a maximum pin-to-pin delay of 15 ns and registered operation up to 76.9 MHz. It operates on a 3.3V or 5.0V supply, includes In-System Programmability (ISP) via JTAG, and provides enhanced routing resources for efficient logic implementation.

Complex Programmable Logic Devices Feature Summary

• 64 Macrocells with expandable logic capacity up to 40 product terms per macrocell
• In-System Programmability (ISP) via standard 4-pin JTAG interface
• Maximum propagation delay of 15 ns with registered operation up to 76.9 MHz
• Supports both 3.3V and 5.0V I/O configurations

Complex Programmable Logic Devices Applications

• Logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant interface designs requiring high current drivers
• Systems requiring field design modifications via software updates

Complex Programmable Logic Devices Procurement Notes

Verify the specific speed grade suffix (-15) matches the required 15 ns timing constraints. Confirm the -JI68 suffix corresponds to the 68-lead PLCC package and industrial temperature range if applicable. Ensure the design tool supports the ATF1504AS series for proper compilation and ISP programming.

Complex Programmable Logic Devices Selection Notes

Select this component when 64 macrocells are sufficient for the logic density requirements. Choose the -15 speed grade if the system clock frequency does not exceed 76.9 MHz. Verify that the PCB layout accommodates the 68-lead PLCC footprint. Consider the power-down mode options if low standby current is critical for the application.

Complex Programmable Logic Devices Part Context

This part belongs to the ATF1504AS/L family of CPLDs from Microchip Technology. The 'AS' designation indicates standard performance, while the 'L' variant typically denotes low-power features. The ATF1504AS series is designed for high-density applications utilizing Atmel's proven electrically-erasable memory technology.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other speed grades of the ATF1504AS in the 68-lead PLCC package, such as ATF1504AS-10JI68 or ATF1504AS-20JI68, provided timing constraints allow. Ensure any substitute maintains the 64 macrocell count and compatible package dimensions.