ATF1508AS-7JX84

Complex Programmable Logic Devices Overview

The ATF1508AS-7JX84 is a high-performance, electrically-erasable complex programmable logic device (CPLD) manufactured by Microchip Technology. It features 128 macrocells with up to 100 inputs and supports 84, 100, or 160 pin configurations. The device offers a maximum pin-to-pin delay of 7 ns and registered operation up to 125 MHz. It operates on a 5V supply for VCCINT and supports 3.3V or 5.0V I/O levels. Key capabilities include In-System Programmability (ISP) via JTAG, enhanced routing resources, and advanced power management features such as automatic standby and pin-controlled power-down modes.

Complex Programmable Logic Devices Feature Summary

• 128 Macrocells with flexible D/T/Latch flip-flops and expandable product terms
• 7 ns maximum pin-to-pin delay with registered operation up to 125 MHz
• In-System Programmability (ISP) using standard 4-pin JTAG interface
• Supports 3.3V or 5.0V I/O pins with separate VCCINT and VCCIO supplies

Complex Programmable Logic Devices Applications

• Complex logic integration replacing multiple TTL/SSI/MSI/LSI devices
• PCI-compliant interface designs requiring high current drivers
• Systems requiring in-field design modifications via software updates
• Boundary-scan testing applications compliant with IEEE Std. 1149.1

Complex Programmable Logic Devices Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type, temperature range, and lead-free status. Confirm availability status as distribution channels may vary. Ensure compatibility with existing JTAG programming hardware and software tools for ISP operations.

Complex Programmable Logic Devices Selection Notes

Select this component when high density (128 macrocells) and fast propagation delay (7 ns) are required. Choose the 84-lead PLCC package for this specific part number. Ensure the design utilizes the 5V VCCINT supply while configuring VCCIO for the target I/O voltage level (3.3V or 5.0V). Consider the enhanced routing resources if pin-locking modifications are anticipated.

Complex Programmable Logic Devices Part Context

This device belongs to the ATF1508AS family of Electrically Erasable PLDs. It shares architectural similarities with other members like the ATF1508AS-10JU84 but differs in speed grade and package. The 'AS' designation indicates the enhanced feature set including improved connectivity and flexible macrocells compared to earlier generations.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include ATF1508AS-10JU84 (10 ns delay) or ATF1508AS-15JU84 (15 ns delay) if slower speeds are acceptable. Verify pinout compatibility across different packages (PLCC vs TQFP) before substitution.