AT17F080-30CU

Overview

The AT17F080-30CU is an 8-Mbit serial configuration memory device designed for Field Programmable Gate Arrays (FPGAs). It operates at a nominal 3.3V supply voltage with 5.0V tolerant I/O pins and supports fast serial download speeds up to 33MHz. The component utilizes a low-power CMOS FLASH process, offering 100,000 write cycle endurance and a standby current of less than 1mA. It is available in an 8-pad LAP package and functions as an In-System Programmable (ISP) configurator compatible with various FPGA architectures.

Feature Summary

• Supports In-System Programming via a 2-wire bus using standard programmers or ISP cables
• Provides direct interface compatibility with SRAM-based FPGAs in Master Serial Mode
• Features cascading capability through the CEO output pin to support multiple configurations
• Includes page download mode allowing storage of multiple bitstreams within a single device

Applications

• Configuration of Xilinx XC3000, XC4000, Spartan, Virtex, and XC5200 FPGAs
• Configuration of Altera FLEX and APEX devices
• Configuration of Atmel AT40K, AT94K, and Motorola MPA1000 FPGAs
• Cascaded systems requiring higher-density configuration arrays

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the AT17F080 series is offered in both 8-pad LAP and 20-lead PLCC variants. Confirm the temperature grade corresponds to industrial specifications (-40°C to +85°C). Ensure programming equipment compatibility with the 2-wire serial protocol before procurement.

Selection Notes

Select this component when designing FPGA systems requiring non-volatile configuration storage without external controllers. It is suitable for applications needing simple serial access and daisy-chain expansion. Consider the 5.0V tolerant I/O if interfacing with mixed-voltage logic levels. Verify that the 33MHz clock speed meets the timing requirements of the target FPGA master serial mode.

Part Context

This device belongs to the AT17F Series of In-System Programmable Configuration PROMs manufactured by Microchip Technology (formerly Atmel). These configurators are specifically engineered to provide cost-effective memory solutions for loading FPGA bitstreams. The series includes the 4-Mbit AT17F040 and the 8-Mbit AT17F080, sharing identical control logic and interface protocols.

Replacement Considerations

• AT17F080-30JU

FAQ

How does the device handle cascading with other configurators?

The device uses the CEO (Chip Enable Output) pin to drive the CE input of the next configurator in the chain. When the internal address counter reaches its maximum value, the CEO goes Low, enabling the subsequent device while tri-stating the DATA output of the first device.

What is the function of the SER_EN pin during normal operation?

During FPGA configuration operations, the SER_EN pin must remain High. Bringing it Low enables the 2-Wire Serial Programming Mode for reprogramming the device.