AT94S40AL-25BQC

Overview

The AT94S40AL-25BQC is a Secure FPSLIC combining an AT40K SRAM-based FPGA with 40,000 gates and an AVR 8-bit RISC microcontroller. It integrates 1 Mbit of secure configuration EEPROM memory with in-system programming (ISP) capabilities. The device features up to 36 Kbytes of dynamically allocated SRAM for instructions and data, supporting high-performance DSP operations via a hardware multiplier. Operating at 3.0V to 3.6V, it offers 5V tolerant I/O and supports JTAG debugging. The architecture allows for dynamic reconfiguration and cache logic support, targeting portable applications with low power consumption.

Feature Summary

• Integrated AT40K FPGA with 40,000 usable gates and distributed SRAM
• Embedded AVR Enhanced RISC core with hardware multiplier
• 1 Mbit Secure Configuration EEPROM with ISP and security protection
• Up to 36 Kbytes of combined Instruction and Data SRAM

Applications

• Portable and handheld devices requiring low power consumption
• DSP-based systems utilizing the hardware multiplier
• Applications requiring secure configuration and anti-tampering
• Systems needing dynamic reconfiguration without data loss

Procurement Notes

Verify the specific suffix '25BQC' against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with the System Designer software suite for co-verification. Confirm that the 3.0V-3.6V operating voltage range meets system power requirements.

Selection Notes

Select this model for designs requiring 40,000 FPGA gates and significant on-chip memory. Compare gate counts and SRAM sizes against the AT94S05AL and AT94S10AL if resource optimization is needed. Ensure the design utilizes the 3.3V PCI-compliant I/O structures and accounts for the 5V tolerant inputs where applicable.

Part Context

The AT94S40AL belongs to the AT94S Secure Family, which merges Atmel's AT40K FPGA technology with AVR microcontrollers and AT17 Series EEPROMs. This family provides a multi-chip module solution within a single package, enabling complex system integration with enhanced security features compared to non-secure variants.

Replacement Considerations

The AT94S10AL and AT94S05AL are part of the same family but offer lower FPGA gate counts (10K and 5K respectively). Verify if the reduced resources meet design needs. No direct pin-compatible substitutes from other manufacturers are documented in the provided source material.