AT17C512-10PC

Overview

The AT17C512-10PC is a 512-kilobit serial EEPROM designed for FPGA configuration. It operates at 5V nominal supply voltage and supports In-System Programming via a 2-wire bus. The device features a simple serial interface compatible with SRAM FPGAs, including Xilinx XC3000/4000 series and Altera devices. It offers low-power CMOS technology, programmable reset polarity, and a system-friendly READY pin to indicate valid power levels during startup.

Feature Summary

• In-System Programmable via 2-wire Bus
• Compatible with SRAM FPGAs such as Xilinx and Altera devices
• Programmable Reset Polarity
• Low-power Standby Mode

Applications

• Configuration of Field Programmable Gate Arrays (FPGAs)
• Storage of configuration programs for Atmel AT6000, AT40K, and AT94K devices
• Drop-in replacement for Xilinx XC17/ATT17 PROMs
• Cascadable read back for higher-density arrays

Procurement Notes

Verify the specific package type required, as the 'PC' suffix denotes an 8-lead PDIP. Confirm that the 5V operating voltage aligns with the target system design, distinguishing it from the LV variants which operate at 3.3V. Ensure compatibility with existing FPGA master serial mode requirements before procurement.

Selection Notes

Select this component when a 5V supply is available and an 8-pin through-hole package is preferred for prototyping or specific board layouts. Consider the AT17LV512-10PC if the system operates at 3.3V. Verify that the FPGA device supports the serial configuration mode and that the memory density meets the configuration bitstream size requirements.

Part Context

This part belongs to the AT17 Series of FPGA Configuration EEPROMs, manufactured originally by Atmel and now under Microchip Technology. The series includes 512-kbit and 1-Mbit densities in various packages. The AT17C512 specifically targets 5V applications, providing a cost-effective solution for programming SRAM-based FPGAs without requiring external controllers.

Replacement Considerations

AT17LV512-10PC (for 3.3V systems only)

FAQ

How does the device handle power-up initialization?

Upon power-up, the address counter is automatically reset. The READY pin is driven Low during the power-on reset cycle and released (tri-stated) when the cycle is complete, indicating a good power level to the FPGA.

Can multiple AT17C512 devices be used together?

Yes, the devices are cascadable. The CEO output of one device drives the CE input of the next configurator in a daisy-chain, allowing for additional memory configurations or higher-density arrays.