AT17F080-30TQC

Overview

The AT17F080-30TQC is an 8-Mbit serial configuration memory device designed for Field Programmable Gate Arrays (FPGAs). It operates at a maximum clock frequency of 33 MHz and supports In-System Programming via a 2-wire bus. The component utilizes a low-power CMOS Flash process with 5V tolerant I/O pins and a 3.3V output capability. It is housed in a 44-lead Thin Plastic Quad Flat Package (TQFP) and functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Supports In-System Programming through a 2-wire serial interface
• Features 5V tolerant I/O pins compatible with various FPGA logic levels
• Enables cascading configurations for higher-density arrays or multiple devices
• Includes page select inputs to partition address space for multiple bitstreams

Applications

• Configuration of Xilinx Virtex, Spartan, XC3000, XC4000, and XC5200 FPGAs
• Programming Altera FLEX and APEX series devices
• Setting up Lucent ORCA and Motorola MPA1000 FPGA architectures
• Configuring Atmel AT40K and AT94K programmable logic devices

Procurement Notes

Verify the specific package suffix TQFP corresponds to the 44-lead Thin Quad Flat Package variant. Confirm the operating temperature grade matches the commercial requirement of 0°C to +70°C. Ensure programming equipment supports the required 2-wire serial protocol for ISP operations. Check for compatibility with the intended FPGA master serial mode signals.

Selection Notes

Select this component when an 8-Mbit capacity is required for FPGA configuration. Choose this part over the AT17F040 if the target design exceeds 4-Mbit storage needs. Consider the TQFP package only if surface mount assembly on a 44-pin footprint is available. Verify that the system voltage aligns with the 3.3V nominal supply specification.

Part Context

This device belongs to the AT17F Series of In-System Programmable Configuration PROMs. These configurators provide cost-effective memory solutions for SRAM-based FPGAs. The series includes variants like the AT17F040 for smaller designs. The AT17F080 specifically targets applications requiring larger configuration data sets.

Replacement Considerations

AT17F080-30BJC (44-lead PLCC package)

FAQ

How does the device handle cascading with other configurators?

The CEO pin goes Low when the internal address counter reaches its maximum value, enabling the CE input of the next device in the chain to drive its DATA output.

What is the function of the PAGE_EN input?

When high, it partitions the address space into four equal pages, allowing multiple configuration bitstreams to be stored and retrieved from a single device using PAGESEL inputs.