AT17F040A-30QI

Overview

The AT17F040A-30QI is a 4-Mbit In-System Programmable (ISP) Configuration PROM designed for Field Programmable Gate Arrays (FPGAs). It operates on a single 3.3V supply with 5.0V tolerant I/O pins and supports serial download speeds up to 33MHz. The device features low-power CMOS FLASH technology, offering 100,000 write cycles typical endurance and a standby mode consuming less than 3mA. It provides compatibility with Altera FLEX, Excalibur, Stratix, Cyclone, APEX, and Atmel AT40K/AT94K devices.

Feature Summary

• Supports In-System Programming via a 2-wire serial bus using standard programmers or ISP cables
• Enables cascading of multiple configurators to support additional configurations or higher-density FPGA arrays
• Features page download mode allowing storage and retrieval of multiple configuration bitstreams from a single device
• Provides direct interface to SRAM-based FPGAs without requiring an external intelligent controller

Applications

• Configuration of Altera FLEX, Excalibur, Stratix, Cyclone, and APEX devices
• Configuration of Atmel AT40K and AT94K devices
• Emulation of Atmel AT24C Serial EEPROMs
• Simple system reconfiguration using single device bitstream files

Procurement Notes

Verify the package designation in the ordering code. The datasheet specifies 'J' for 20-lead PLCC and 'C' for 8-pad LAP packages. The suffix 'QI' is not explicitly defined in the provided ordering information table; confirm if it denotes a specific lead finish or variant distinct from the standard 'CU' (Lead-free/Halogen-free) or 'JU' designations listed.

Selection Notes

Select this component when configuring SRAM-based FPGAs requiring a cost-effective, serial-access solution. Ensure the target FPGA supports Master Serial mode. Verify that the 3.3V operating voltage aligns with the system power rails. Consider cascading capabilities if the FPGA configuration size exceeds the 4-Mbit capacity of the AT17F040A.

Part Context

The AT17F040A belongs to the AT17FxxxA Series of In-System Programmable Configurators manufactured by Microchip Technology (formerly Atmel). This series provides programmable serial memories specifically engineered to store configuration programs for various FPGA architectures, replacing traditional parallel configuration PROMs with a simpler serial interface.

Replacement Considerations

The AT17F080A serves as a higher-density alternative within the same family. For pin-compatible replacements, verify availability of other manufacturers' serial configuration PROMs supporting the same 2-wire ISP protocol and FPGA master serial modes.