ATF1502ASV-15AI44

Overview

The ATF1502ASV-15AI44 is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology. It features 32 macrocells with up to 36 inputs and operates within a 3.0V to 3.6V supply range. The device provides a maximum pin-to-pin delay of 15 ns and supports registered operation up to 77 MHz. It utilizes advanced EEPROM technology for in-system programmability via JTAG, offering 10,000 program/erase cycles and 20-year data retention. The component is housed in a 44-lead TQFP package and is rated for industrial temperature ranges from -40°C to +85°C.

Feature Summary

• 32 Macrocells with 5 product terms each, expandable to 40 via cascade logic
• In-System Programmability (ISP) using standard 4-pin JTAG interface
• Pin-controlled power-down mode reducing standby current to below 15 mA
• Programmable pin-keeper option to prevent floating inputs and reduce noise

Applications

• Logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant system designs requiring boundary-scan testing
• State machine initialization with power-up reset features
• Low-power applications utilizing individual macrocell power reduction options

Procurement Notes

Verify the specific package variant required, as the 'I' suffix denotes Industrial temperature range (-40°C to +85°C). Confirm that the design utilizes the 44-lead TQFP form factor. Ensure development tools support the IEEE Std. 1149.1 JTAG protocol for programming. Check for any specific RoHS compliance documentation if required by the manufacturing environment.

Selection Notes

Select this model when an industrial temperature range is mandatory alongside 15 ns performance. Compare against commercial variants if the operating environment remains within 0°C to 70°C. Consider the ATF1504 series if higher density with 64 macrocells is needed. Evaluate the ASVL low-power version if reduced supply current is a primary constraint over raw speed.

Part Context

This part belongs to the ATF15xx family of high-density CPLDs. It shares architectural similarities with the ATF1504 but offers lower density. The 'ASV' designation indicates the standard voltage and speed grade, while 'AI44' specifies the industrial temperature rating and TQFP package. It succeeds earlier Atmel PLD technologies with enhanced routing and ISP capabilities.

Replacement Considerations

Direct replacements include ATF1502ASV-15JI44, which is functionally identical. For commercial temperature applications, ATF1502ASV-15AC44 may be used with appropriate derating. Higher density needs can be met by the ATF1504ASV series.