AT94K05AL-25AQI

Overview

The AT94K05AL-25AQI 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 usable FPGA gates and up to 36 Kbytes of dynamically allocated dual-port SRAM for instruction and data storage. The device operates at a supply voltage of 3.0V to 3.6V and supports clock frequencies up to 33 MHz. Key architectural elements include a high-performance RISC AVR core with hardware multiplier, JTAG ICE support for debugging, and Cache Logic for dynamic in-system reconfiguration without data loss.

Feature Summary

• Monolithic FPSLIC architecture integrating 5K-gate AT40K FPGA with AVR RISC microcontroller
• Up to 36 Kbytes of shared dual-port SRAM (15 ns access time)
• JTAG (IEEE 1149.1) interface with on-chip In-Circuit Emulator (ICE) support
• Cache Logic enabling dynamic partial or full logic reconfiguration during operation

Applications

• Portable and handheld applications requiring low static and dynamic power consumption
• DSP-optimized systems utilizing the hardware multiplier and distributed SRAM
• Video compression/decompression and encryption involving adaptive FIR filters or FFTs
• Systems requiring real-time dynamic reconfiguration via Cache Logic

Procurement Notes

Verify the ordering suffix 'QI' against official Microchip documentation to confirm package type and temperature range specifications. Confirm that the specific revision includes JTAG ICE support as indicated by the series characteristics. Ensure PCB layout accounts for split power supply requirements between the FPGA and AVR cores.

Selection Notes

Select this model for designs requiring 5,000 FPGA gates combined with an 8-bit microcontroller. The AT94K05AL variant provides 4 Kbytes to 16 Kbytes of program SRAM and 4 Kbytes to 16 Kbytes of data SRAM. Consider the AT94K10AL or AT94K40AL if higher gate counts or larger memory resources are necessary for the application.

Part Context

This component belongs to the AT94KAL Series FPSLIC family, which merges Atmel's AT40K FPGA technology with AVR microcontroller capabilities. The series is fabricated using a 0.35µm five-layer metal CMOS process. The AT94K05AL represents the entry-level gate count within the family, offering a balance of programmable logic and processing power for cost-sensitive embedded systems.

Replacement Considerations

Compatible alternatives within the same family include the AT94K10AL and AT94K40AL, which offer increased FPGA gate counts (10K and 40K respectively) while maintaining pin compatibility and architectural similarities. Verify pinout consistency when migrating to higher-density devices.