AT17C65-10NC

Overview

The AT17C65-10NC is a 64K-bit (65,536 x 1-bit) serial EEPROM designed for FPGA configuration. It operates at 5V nominal and supports commercial temperature ranges from 0°C to +70°C. The device utilizes an 8-pin SOIC package and features a simple 2-wire serial interface for in-system programming. It provides low-power standby mode with current consumption under 75 µA at 5.0V. The maximum input clock frequency is 12.5 MHz.

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 for flexible system integration
• Includes write-protection mechanisms within the programming mode

Applications

• Configuration of Atmel AT6000 FPGAs
• Configuration of Altera FLEX devices
• Configuration of Xilinx XC3000, XC4000, and SPARTAN FPGAs

Procurement Notes

Verify that the specific part number corresponds to the 5V commercial grade variant. Confirm the package type matches the required 8-lead SOIC form factor. Ensure compatibility with the target FPGA's master serial mode requirements. Check for any specific programming kit dependencies if in-system programming is planned.

Selection Notes

Select this component when a cost-effective solution for configuring smaller FPGAs is required. It is suitable for designs utilizing 5V logic levels. Consider the 8-pin SOIC package for space-constrained applications where PLCC or PDIP options are not feasible. Verify that the memory capacity meets the specific bit-depth needs of the target FPGA architecture.

Part Context

This device belongs to the AT17 Series of FPGA Configuration EEPROMs, also known as Configurators. The series includes variants with different memory densities such as 128K and 256-bit capacities. These devices are engineered to provide a straightforward interface for loading configuration data into various FPGA families using standard serial protocols.

Replacement Considerations

AT17LV65-10NC

FAQ

Can the AT17C65 be used in a cascaded chain?

No, the AT17C65 can only be used at the end of a cascade chain or as a standalone device. Cascading capabilities are supported by the 128K and 256K variants.

How is the reset polarity configured?

The reset polarity is programmable as either active High or active Low. This setting is configured by programming a special byte within the EEPROM during the initialization phase.