AT94K05AL-25AJI

Overview

The AT94K05AL-25AJI is a Field Programmable System Level Integrated Circuit (FPSLIC) combining an Atmel AT40K SRAM-based FPGA with an embedded AVR microcontroller core. It features 5,000 FPGA gates, up to 36 Kbytes of dynamically allocated instruction and data SRAM, and JTAG ICE support. The device operates at 3.0V to 3.6V with a maximum frequency of 33 MHz for PCI-compliant I/O. Key specifications include 96 maximum FPGA user I/Os, 8 programmable AVR I/O lines, two UARTs, and a hardware multiplier.

Feature Summary

• Monolithic FPSLIC architecture integrating AT40K FPGA and AVR RISC core
• 5,000 usable FPGA gates with distributed FreeRAM and Cache Logic capability
• Up to 36 Kbytes of shared dual-port SRAM for program and data storage
• JTAG (IEEE 1149.1) interface for on-chip debugging and boundary-scan

Applications

• Video compression and decompression systems
• Encryption and convolution algorithms
• Adaptive finite impulse response (FIR) filters
• Fast Fourier transforms (FFT) and discrete-cosine transforms (DCT)

Procurement Notes

Verify the ordering suffix 'JI' against official Microchip documentation to confirm package type and temperature range. Confirm JTAG ICE support presence via date code marking as indicated in the datasheet. Ensure split power supply layout guidelines are followed during PCB design to maintain signal integrity.

Selection Notes

Select this component for applications requiring dynamic reconfiguration and high-performance DSP functions within a low-power footprint. Compare gate counts and SRAM sizes against AT94K10AL or AT94K40AL if higher logic density is required. Verify voltage compatibility with 3.0V-3.6V rails and ensure 5V I/O tolerance meets system interface requirements.

Part Context

This part belongs to the AT94KAL Series FPSLIC family, which merges Atmel's AT40K FPGA technology with AVR microcontrollers. The series includes variants like AT94K10AL and AT94K40AL with increasing gate counts. The 'AL' suffix denotes the 3.0V-3.6V operating voltage range, distinguishing it from other voltage variants in the broader FPSLIC portfolio.

Replacement Considerations

Direct replacements within the same package and pinout include AT94K10AL or AT94K40AL variants if higher performance is needed. Cross-family migration to newer Microchip FPGAs requires architectural redesign due to differences in configuration and core integration.