ATF750LVC-15XU

Complex Programmable Logic Devices Overview

The ATF750LVC-15XU is a high-performance CMOS electrically-erasable complex programmable logic device (CPLD) from the Atmel 750 architecture. It operates within a 3.0V to 5.5V supply range and features 24-pin Thin Shrink Small Outline (TSSOP) packaging. The device provides 12 dedicated inputs, 10 I/O pins, and 20 flip-flops with 171 total product terms. It supports D- or T-type registers, individual asynchronous resets, and direct input pin clocking. Maximum pin-to-pin delay is 15 ns at 3V operation and 10 ns at 5V operation.

Complex Programmable Logic Devices Feature Summary

• Electrically-erasable CPLD with 12 inputs, 10 I/Os, and 20 flip-flops
• 15 ns maximum pin-to-pin delay at 3V; 10 ns at 5V
• Programmable pin-keeper circuits for unused inputs/I/Os
• Individual asynchronous reset and selectable D/T-type flip-flops

Complex Programmable Logic Devices Applications

• Complex state machine implementation
• High-speed digital logic replacement
• Bus interface control

Complex Programmable Logic Devices Procurement Notes

Verify package type '24X' corresponds to TSSOP. Confirm industrial temperature range (-40°C to +85°C). Check RoHS compliance status as leaded options were removed in later revisions. Ensure programming equipment compatibility with Atmel's electrically-erasable technology.

Complex Programmable Logic Devices Selection Notes

Select based on required speed grade (-15 for 15ns/3V). Choose TSSOP (24X) for surface mount applications requiring thermal management. Consider PLCC or PDIP if through-hole mounting is preferred. Verify voltage requirements against 3.0V-5.5V operating range.

Complex Programmable Logic Devices Part Context

Part of the Atmel 750 series CPLDs, offering enhanced logic flexibility over standard 22V10 devices. Architecturally compatible with ATV750B software and hardware tools. Provides superior gate density for 24-pin packages with buried sum terms and feedback paths.

Complex Programmable Logic Devices Replacement Considerations

Compatible with ATV750B architecture. Software migration may require compiler updates for Pin-keeper circuit settings (V750C vs V750CPPK modes). Direct electrical pinout matches other 24-pin ATF750 variants.

Complex Programmable Logic Devices FAQ

What is the function of the pin-keeper circuit?

It maintains the last logic state of floating input or I/O pins, preventing unnecessary power consumption and system noise without external pull-up resistors.

Can each flip-flop use a different clock source?

Yes, each flip-flop can be individually clocked by its own product term or directly from an input pin (Pin 1).

What is the maximum operating frequency?

Maximum frequency depends on feedback configuration: up to 55 MHz (external), 62 MHz (internal), or 71 MHz (no feedback) at 3V operation.