ATF1502AS-7AC44

Overview

The ATF1502AS-7AC44 is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology. It features 32 logic macrocells with up to 5 product terms each, expandable to 40 via cascade logic. The device operates at a maximum pin-to-pin delay of 7.5 ns and supports registered operation up to 125 MHz. It utilizes advanced EEPROM technology for in-system programmability (ISP) via JTAG, offering 10,000 program/erase cycles and 20-year data retention. The component is housed in a 44-lead TQFP package and functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• 32 Macrocells with flexible D/T latch configurable flip-flops and global control signals
• In-System Programmability (ISP) via standard 4-pin JTAG interface
• Advanced power management including automatic standby and pin-controlled power-down modes
• PCI-compliant output drivers with programmable slew rate and open collector options

Applications

• High-speed digital logic integration replacing TTL, SSI, MSI, or LSI components
• PCI-based interface designs requiring high current drive capabilities
• State machine initialization and control using power-up reset features
• Boundary-scan testing and debugging via IEEE Std. 1149.1 compliance

Procurement Notes

Verify the specific suffix 'AC44' against official Microchip documentation to confirm the exact package type (TQFP-44) and commercial temperature rating. Ensure design files account for the 5V supply voltage requirements and JTAG pin reservations if ISP functionality is utilized during manufacturing.

Selection Notes

Select this model for applications requiring high-density logic in a compact 44-pin surface-mount package. Consider the -7 speed grade for designs needing propagation delays under 7.5 ns. Evaluate power consumption needs, as the standard AS version lacks the low-power standby features found in the AL variant.

Part Context

This component belongs to the ATF1502AS family of high-performance CPLDs. It shares architectural similarities with other devices in the series but is distinguished by its specific speed grade (-7) and package configuration. The device leverages Atmel's proven EEPROM technology, now managed by Microchip Technology following acquisition.

Replacement Considerations

Direct replacements include other ATF1502AS variants with different speed grades (e.g., -10, -15) or packages (PLCC-44). For lower power requirements, the ATF1502ASL series may be considered, though electrical characteristics differ significantly.