AT17LV256-10CU

Overview

The AT17LV256-10CU is a 256-kbit serial EEPROM designed for FPGA configuration. It supports 3.0V to 5.5V operation and operates within an industrial temperature range of -40°C to +85°C. The device features a maximum clock frequency of 10 MHz at 3.3V and 12.5 MHz at 5.0V. It utilizes a simple serial interface with Chip Enable (CE), Clock (CLK), and Data I/O pins, including a Chip Enable Output (CEO) for cascading. The component is housed in an 8-lead Leadless Array Package (LAP).

Feature Summary

• Designed specifically as a configurator memory solution for Field Programmable Gate Arrays.
• Supports In-System Programming via a 2-wire serial bus interface.
• Features programmable reset polarity and write protection mechanisms during programming.
• Capable of cascading configurations through the Chip Enable Output pin.

Applications

• Configuration of SRAM-based FPGAs such as Xilinx XC3000/4000 series.
• Configuration of Altera FLEX and APEX devices.
• Configuration of Atmel AT6000, AT40K, and AT94K devices.

Procurement Notes

Verify that the ordering suffix 'CU' corresponds to the 8-lead LAP package with CuNiAu lead finish. Confirm the voltage range matches the application requirements of 3.0V to 5.5V. Ensure the industrial temperature rating of -40°C to +85°C is suitable for the operating environment. Cross-reference the specific revision level if compatibility with legacy designs is required.

Selection Notes

Select this part when a 256-kbit capacity is required for FPGA configuration. The 8-lead LAP package offers a compact footprint comparable to SOIC but without leads. Consider the CEO feature for expanding memory capacity in daisy-chain setups. Verify compatibility with the target FPGA's master serial mode requirements.

Part Context

This component belongs to the AT17LV family of FPGA Configuration EEPROMs. It serves as a direct replacement or alternative for older densities like the AT17LV65 and AT17LV128, which are noted as not recommended for new designs. The family provides a cost-effective solution for storing configuration programs for various FPGA architectures.

Replacement Considerations

The AT17LV65 and AT17LV128 are explicitly marked as Not Recommended for New Designs (NRND) and are replaced by the AT17LV256. When substituting, ensure the pinout compatibility between the 8-lead LAP and the original package type is maintained.