AT94K05AL-25BQI

Overview

The AT94K05AL-25BQI is a Field Programmable System Level Integrated Circuit (FPSLIC) combining an Atmel AT40K SRAM-based FPGA with an embedded AVR 8-bit RISC microcontroller. It features 5,000 FPGA gates, up to 36 Kbytes of dynamically allocated dual-port SRAM, and JTAG ICE support for on-chip debugging. The device operates at 3.0V to 3.6V with a typical throughput of 19 MIPS at 25 MHz. Key peripherals include two UARTs, three timer/counters, and a hardware multiplier.

Feature Summary

• Monolithic FPSLIC architecture integrating 5K-gate AT40K FPGA and high-performance AVR core
• Up to 36 Kbytes of shared dual-port SRAM for program and data storage
• JTAG (IEEE 1149.1) interface supporting In-Circuit Emulation (ICE)
• Cache Logic capability for dynamic in-system reconfiguration without data loss

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 BQI corresponds to the TQFP package variant. Confirm the presence of JTAG ICE support by checking the date code for the letter 'J'. Ensure PCB layout supports split power supplies for the FPGA and AVR cores as recommended in the design guidelines.

Selection Notes

Select this model for applications requiring 5,000 usable FPGA gates and extensive on-chip memory. The AL suffix indicates operation within the 3.0V to 3.6V voltage range. Consider the ATFS series devices if external configuration memory is required for power-up loading.

Part Context

This component belongs to the AT94KAL Series FPSLIC family, which pairs Atmel's AT40K FPGA technology with AVR microcontrollers. The AT94K05AL variant specifically provides 5,000 gates, distinguishing it from the 10K and 40K gate counterparts in the same series.

Replacement Considerations

Direct replacements within the same package and functionality include the AT94K10AL-25BQI and AT94K40AL-25BQI, which offer higher gate counts but maintain pin compatibility.