AT17C65-10SI

Overview

The AT17C65-10SI is a 64K-bit (65,536 x 1-bit) serial EEPROM configurator designed for Field Programmable Gate Arrays. It operates at 5V nominal voltage within an industrial temperature range of -40°C to +85°C. The device utilizes a simple serial interface with CLK and DATA pins for configuration data transfer. It features programmable reset polarity, low-power standby mode consuming less than 75 µA, and supports in-system programming via a 2-wire bus. The component is housed in a 20-lead Plastic J-leaded Chip Carrier (PLCC) package.

Feature Summary

• Designed specifically as a configuration memory source for FPGA devices
• Supports in-system programming through a dedicated 2-wire serial bus interface
• Features user-programmable logic polarity for the reset function
• Includes a cascading capability output for expanding memory capacity

Applications

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

Procurement Notes

Verify that the specific ordering suffix corresponds to the required industrial temperature grade (-40°C to +85°C) and the 20-lead PLCC package format. Confirm the voltage specification matches the system's 5V nominal requirement, distinct from the LV variants. Ensure compatibility with the target FPGA's master serial mode requirements before procurement.

Selection Notes

Select this component when a 64K-bit non-volatile memory solution is required for single-device FPGA configuration. It is suitable for systems needing a cost-effective configurator with a simple serial interface. Consider alternative densities if the target FPGA requires more configuration bits or if lower voltage operation is necessary.

Part Context

This part belongs to the AT17C/LV65/128/256 family of FPGA Configuration EEPROMs manufactured by Atmel. These devices serve as configurators to store the bitstream programs loaded into FPGAs upon power-up. The family offers varying memory densities and voltage options to support different FPGA architectures and system power constraints.

Replacement Considerations

AT17C65-10PC

FAQ

Can the AT17C65-10SI be used in a cascade chain?

No, the AT17C65 cannot be used in a cascade chain; it can only be used at the end of a chain or as a standalone device.

How is the reset polarity configured?

The reset polarity is programmable via a special EEPROM byte during the programming process.