AT94K40AL-25BQU

Overview

The AT94K40AL-25BQU is a monolithic Field Programmable System Level Integrated Circuit (FPSLIC) combining an Atmel AT40K SRAM-based FPGA with an embedded high-performance AVR 8-bit RISC microcontroller. It features 40,000 usable FPGA gates, up to 32 Kbytes of programmable instruction SRAM, and up to 16 Kbytes of data SRAM. The device operates at a maximum frequency of 25 MHz within a voltage range of 3.0V to 3.6V. Key hardware components include a hardware multiplier, two UARTs, three timer/counters, and JTAG ICE support for on-chip debugging.

Feature Summary

• Integrated AT40K FPGA core with 40,000 gates and Cache Logic for dynamic reconfiguration
• Embedded AVR Enhanced RISC core with up to 1 MIPS/MHz performance and 32 general-purpose registers
• Up to 36 Kbytes of shared dual-port SRAM (up to 16K x 16 program, 16K x 8 data)
• JTAG (IEEE 1149.1) interface for extensive on-chip debug support

Applications

• Video compression and decompression systems
• Encryption and convolution algorithms
• Adaptive finite impulse response (FIR) filters and Fast Fourier Transforms (FFT)
• Multimedia applications requiring real-time processing

Procurement Notes

Verify the specific suffix 'BQU' against the manufacturer's official documentation to confirm package type and temperature grade. Ensure design layouts support split power supplies as recommended for AT94KAL devices. Confirm that the ordering code includes the 'J' designation if JTAG ICE functionality is required for production units.

Selection Notes

Select this component when both high-density logic implementation and complex control logic are required in a single chip. The AT94K40AL offers 40K gates, suitable for compute-intensive DSP functions. Consider the 3.0V-3.6V operating voltage and 25MHz speed rating. Verify compatibility with the System Designer software suite for co-verification of the FPGA and AVR cores.

Part Context

This part belongs to the AT94KAL Series FPSLIC family, which integrates Atmel's AT40K FPGA technology with AVR microcontrollers. The series ranges from 5K to 40K gates. The AT94K40AL represents the highest density option in this specific AL sub-series, providing extensive resources for complex system-on-chip designs compared to the AT94K05AL or AT94K10AL variants.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Design migration within the same package footprint is supported by other parts in the AT94KAL family, such as the AT94K10AL or AT94K05AL, though gate counts and SRAM sizes will differ.