ATF1502ASL-25AI44

Overview

The ATF1502ASL-25AI44 is a high-performance, electrically erasable complex programmable logic device (CPLD) from the ATF1502AS(L) series. It features 32 macrocells with up to 36 inputs and operates at a maximum frequency of 60 MHz. The device utilizes advanced EEPROM technology for complete reprogrammability and supports In-System Programmability (ISP) via JTAG. Key electrical parameters include a maximum pin-to-pin delay of 25 ns, a supply voltage range of 4.5 V to 5.5 V, and an operating temperature range of -40°C to +85°C. The 'L' suffix indicates low-power standby characteristics.

Feature Summary

• 32 Macrocells with flexible D/T/Latch configurable flip-flops and global clock control
• In-System Programmability (ISP) via standard 4-pin JTAG interface
• Advanced EEPROM technology with 10,000 program/erase cycles and 20-year data retention
• Low-power standby mode with automatic 10 µA standby current for 'L' versions

Applications

• Logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant interface designs requiring high current drivers
• State machine initialization with power-up reset options
• Boundary-scan testing and design verification using IEEE Std. 1149.1

Procurement Notes

Verify the specific speed grade suffix (e.g., -25) against the required timing constraints. Confirm that the TQFP-44 package is suitable for the PCB layout. Ensure the design tool supports the ATF1502AS(L) family for proper compilation and ISP configuration.

Selection Notes

Select this component when 32 macrocells are sufficient for the logic density requirements. The -25 speed grade offers a 25 ns maximum delay, suitable for applications up to 60 MHz. Consider the 'L' variant for reduced standby power consumption compared to standard AS versions.

Part Context

This part belongs to the ATF1502AS(L) CPLD family, which provides enhanced routing resources and improved connectivity over previous generations. It is designed for backward compatibility with ATF1500/L software and hardware, facilitating migration from older PLD architectures.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.