ATF1502BE-5AX44

Overview

The ATF1502BE is a high-performance, fully CMOS, electrically-erasable Complex Programmable Logic Device (CPLD) from Microchip Technology. It features 32 macrocells with five product terms each, expandable to 40 via cascade logic. The device supports a maximum pin-to-pin propagation delay of 5.0 ns and registered operation up to 333 MHz. It operates with a core voltage (VCCINT) of 1.8V and I/O supply voltages (VCCIO) of 1.8V, 2.5V, or 3.3V. The ATF1502BE includes In-System Programming (ISP) via IEEE 1532 JTAG, offers low static current consumption, and is available in a 44-lead TQFP package.

Feature Summary

• 32 Macrocells with 5 Product Terms per Macrocell, expandable to 40 via cascade logic
• High-speed performance with 5.0 ns max pin-to-pin delay and 333 MHz registered frequency
• Multi-voltage I/O support for 1.8V, 2.5V, and 3.3V operation with two I/O banks
• In-System Programming (ISP) and Boundary-scan testing via IEEE 1532/1149.1 JTAG interface

Applications

• Logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• Multi-voltage interface bridging between different logic families
• High-speed digital control and state machine implementation
• Boundary-scan testing and design verification environments

Procurement Notes

Verify the specific speed grade suffix (-5 or -7) required for timing constraints. Confirm that the 44-lead TQFP package matches the PCB footprint. Ensure the design toolchain supports the ATF1502BE architecture for proper fitter compilation. Check for industrial temperature range requirements if operating outside commercial limits.

Selection Notes

Select the ATF1502BE when 32 macrocells are sufficient for the logic density. Choose this part for designs requiring mixed 1.8V, 2.5V, and 3.3V I/O levels. Consider the -5 grade for 5.0 ns delay or -7 for 7.0 ns delay based on system clock speeds. Verify JTAG pin availability if boundary-scan or ISP functionality is needed.

Part Context

The ATF1502BE belongs to the ATF1502BE series of CPLDs. It utilizes Atmel's proven electrically-erasable technology and advanced digital CMOS processes. The device is designed for high-density applications with enhanced routing resources to improve pin-lock success rates for design modifications.

Replacement Considerations

Direct replacements within the same family include other ATF1502BE variants with different speed grades (e.g., ATF1502BE-5TQ44, ATF1502BE-7TQ44). Cross-family upgrades may require checking macrocell counts and I/O pin compatibility.