ATF1502ASV-20AC44

Overview

The ATF1502ASV-20AC44 is a high-performance, high-density complex programmable logic device (CPLD) utilizing electrically-erasable EEPROM technology. It features 32 logic macrocells with up to 36 inputs and supports in-system programmability via JTAG. The device operates within a 3.0V to 3.6V supply range and offers a maximum pin-to-pin delay of 20 ns, supporting registered operation up to 83.3 MHz. It includes enhanced routing resources, flexible macrocell configurations, and advanced power management features such as pin-controlled standby mode.

Feature Summary

• 32 Logic Macrocells with 5 Product Terms each, expandable to 40 via cascade
• In-System Programmability (ISP) via 4-pin JTAG interface
• Maximum Pin-to-Pin Delay of 20 ns; Registered Operation up to 83.3 MHz
• Advanced Power Management including 0.75 mA Standby Mode and per-macrocell reduced-power options

Applications

• Integration of TTL, SSI, MSI, LSI, and classic PLD logic functions
• High-speed state machine implementations requiring fast registered input
• Complex combinatorial and sequential logic designs with pin-locking requirements

Procurement Notes

Verify the specific suffix 'AC44' against current Microchip or Atmel documentation to confirm package type (TQFP vs PLCC) and temperature grade. Confirm end-of-life status as older Atmel CPLDs may be discontinued. Ensure design tools support the legacy ISP protocol if field programming is required.

Selection Notes

Select this component for designs requiring 32 macrocells and 3.3V operation. Compare the 20 ns speed grade against the -15 variant if higher frequency performance is needed. Consider the ASVL low-power version if reduced standby current is critical. Verify that the 44-pin package fits the PCB footprint constraints.

Part Context

This part belongs to the ATF1502ASV family of EEPROM-based CPLDs originally manufactured by Atmel, now under Microchip Technology. It is designed to replace discrete logic and simple PLDs with reconfigurable, non-volatile logic solutions. The device supports both commercial and industrial temperature ranges depending on the suffix.

Replacement Considerations

Check for ATF1502ASV-15AC44 for faster 15 ns performance. For lower power needs, consider ATF1502ASVL variants. Verify availability of equivalent devices from other vendors if the original part is obsolete.