AT17F040-30JC

Overview

The AT17F040-30JC is a 4-Mbit serial configuration PROM designed for Field Programmable Gate Arrays. It operates at 3.3V with 5V tolerant I/O and supports industrial temperature ranges from -40°C to +85°C. The device features fast serial download speeds up to 33 MHz, in-system programmability via a 2-wire bus, and low-power standby modes. It is housed in a 20-lead Plastic J-leaded Chip Carrier (PLCC) package.

Feature Summary

• In-system programmability using a 2-wire serial bus interface
• Compatibility with multiple FPGA families including Xilinx and Altera devices
• Support for cascading read-back to configure higher-density arrays
• Low-power CMOS FLASH process with standby mode operation

Applications

• Configuration of SRAM-based FPGAs in master serial mode
• System reconfiguration using single device bitstream storage
• Cascaded configurations for multi-FPGA or high-density array setups

Procurement Notes

Verify the specific ordering suffix 'JC' corresponds to the 20-lead PLCC package and industrial temperature range (-40°C to +85°C). Confirm that the component is sourced as an original manufacturer part, noting that this series may be legacy or end-of-life depending on current Microchip/Atmel inventory status. Ensure compatibility with existing FPGA configuration controllers before procurement.

Selection Notes

Select this component when a cost-effective, serial configuration memory is required for SRAM-based FPGAs. It is suitable for applications needing in-system programming capabilities and compatibility with industry-standard programmers. Consider the 20-lead PLCC package constraints and ensure the design supports the necessary 2-wire serial programming interface during manufacturing.

Part Context

This device belongs to the AT17F Series of In-System Programmable Configuration PROMs. These configurators provide a simple serial-access procedure to program FPGA devices directly without external intelligent controllers. The series includes variants like the AT17F080 for larger capacity needs, sharing similar interface logic and programming specifications.

Replacement Considerations

The AT17F040-30JI serves as the commercial temperature variant of this component. For higher density requirements, the AT17F080 series offers 8-Mbit capacity with compatible interfaces. Verify pinout compatibility, particularly regarding the Virtex pinout option available in specific 20-lead PLCC packages.