AT17C256-10NI

Overview

The AT17C256-10NI is a 256K-bit (262,144 x 1-bit) serial EEPROM designed for FPGA configuration. It operates at 5V nominal and supports industrial temperature ranges from -40°C to +85°C. The device features a simple 2-wire serial interface compatible with FPGA Master Serial Mode, allowing automatic loading of configuration programs upon power-up. It includes programmable reset polarity, write protection, and cascading capabilities via the CEO output for expanded memory configurations.

Feature Summary

• Designed specifically to store configuration programs for Field Programmable Gate Arrays (FPGAs)
• Supports in-system programming via a 2-wire serial bus
• Features programmable reset polarity and internal write-protection mechanisms
• Enables cascading read-back to support additional or higher-density FPGA arrays

Applications

• Configuration of Atmel AT6000 and AT40K FPGAs
• Configuration of Altera FLEX devices
• Configuration of Xilinx XC3000, XC4000, XC5200, and SPARTAN FPGAs
• Configuration of Lucent ORCA and Motorola MPA1000 FPGAs

Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and operating temperature range. Confirm compatibility with the target FPGA's Master Serial Mode requirements. Ensure the design accounts for the 5V supply voltage specifications and industrial temperature limits when integrating this component into the system architecture.

Selection Notes

Select this component for applications requiring non-volatile storage of FPGA bitstreams. It is suitable for systems utilizing FPGAs compatible with the AT17 series interface. Consider cascading options if the single device capacity is insufficient for the target FPGA array size. Verify that the 5V logic levels align with the system's power supply constraints.

Part Context

This part belongs to the low-density AT17 Series of FPGA Configuration EEPROMs. The family includes variants with 64K, 128K, and 256K capacities. The 'C' designation indicates 5V operation, while 'LV' denotes 3.3V versions. The 'NI' suffix specifies the Industrial temperature range (-40°C to +85°C) and the 8-pin SOIC package format.

Replacement Considerations

AT17LV256-10NI