AT17F040-30JI

Overview

The AT17F040-30JI is a 4-Mbit In-System Programmable Configuration PROM manufactured by Microchip Technology. It utilizes a low-power CMOS FLASH process and operates within an industrial temperature range of -40°C to +85°C. The device features 5V tolerant I/O pins and supports fast serial download speeds up to 33 MHz. It is packaged in a 20-lead Plastic J-leaded Chip Carrier (PLCC) and provides a simple serial-access procedure for configuring SRAM-based Field Programmable Gate Arrays.

Feature Summary

• Supports In-System Programming via a 2-wire bus interface
• Features 5V tolerant I/O pins compatible with various FPGA architectures
• Includes page select inputs allowing multiple configuration bitstreams from a single device
• Capable of cascading read-back to support higher-density arrays

Applications

• Configuration memory for Xilinx XC3000, XC4000, and Virtex FPGAs
• Configuration storage for Altera FLEX and APEX devices
• Programming Lucent ORCA and Motorola MPA1000 FPGAs
• Emulation of Atmel AT24CXXX serial EEPROMs

Procurement Notes

Verify the specific ordering code AT17F040-30JI against current manufacturer documentation to confirm package type and operating temperature grade. Ensure compatibility with existing FPGA master serial mode requirements. Confirm that programming equipment supports the required 2-wire serial protocol for ISP operations.

Selection Notes

Select this component when a 4-Mbit capacity is sufficient for the target FPGA configuration. The industrial temperature range (-40°C to +85°C) makes it suitable for harsh environments. The 20-lead PLCC package is chosen for its pin-out compatibility with specific legacy FPGA designs requiring this form factor.

Part Context

This part belongs to the AT17F Series of Configurators, designed as cost-effective configuration memories for Field Programmable Gate Arrays. The series includes variants like the AT17F080 for larger capacities. These devices are engineered to interface directly with FPGA control signals, automating the loading of configuration programs upon power-up or command.

Replacement Considerations

AT17F040-30CC: Commercial temperature variant.