LFE5U-85F-7BG381I

The LFE5U-85F-7BG381I is an industrial‑grade FPGA from Lattice Semiconductor’s ECP5 family. This surface‑mount 381‑FBGA device combines a high logic capacity with substantial on‑chip memory and a broad I/O count, making it suitable for embedded designs that require flexible programmable logic, deterministic I/O, and extended temperature operation.

Documented as part of the ECP5 family, the device provides architecture and system features described in the Lattice ECP5 datasheet (clocking, DSP slices, SERDES/PCS blocks and DDR support) while delivering specific device-level specifications such as 84,000 logic elements, approximately 3.83 Mbits of embedded memory and 205 I/O pins.

Key Features

• Logic Capacity  84,000 logic elements for implementing mid‑to‑large scale programmable logic functions.
• Embedded Memory  Approximately 3.83 Mbits of on‑chip RAM to support buffering, packet memory and working storage.
• Programmable I/O  205 user I/O pins delivered in the 381‑FBGA package for interface consolidation and system integration.
• Voltage and Power  Core supply specified from 1.045 V to 1.155 V, enabling precise low‑voltage operation.
• Package & Mounting  381‑FBGA (supplier package: 381‑CABGA, 17×17) in a surface‑mount form factor for compact board designs.
• Industrial Temperature Grade  Rated for operation from −40 °C to 100 °C to meet industrial environment thermal requirements.
• Family Architecture Highlights  ECP5 family features described in the datasheet include advanced clocking (PLLs and clock distribution), sysDSP slices, SERDES and PCS blocks, DDR memory support and an on‑chip oscillator and configuration options.
• Compliance  RoHS compliant for regulatory and assembly compatibility.

Typical Applications

• High‑Speed Serial Interfaces  Utilize the ECP5 family SERDES and PCS capability for protocol bridging, link aggregation or custom serial PHY functions.
• Memory Interfaces and Controllers  DDR memory support and DQS grouping capability in the family architecture enable implementation of memory interfaces and controllers.
• Signal Processing and DSP Acceleration  sysDSP slices described in the ECP5 documentation support embedded DSP functions and accelerators within programmable logic.
• Industrial Control and I/O Aggregation  205 I/O pins and an industrial temperature rating make this device suitable for automation, control IO consolidation and protocol bridging in harsh environments.

Unique Advantages

• High integration density: 84,000 logic elements combined with ~3.83 Mbits of embedded RAM reduce external components and simplify board design.
• Broad I/O capability: 205 I/O pins in a compact 381‑FBGA package allow consolidation of multiple interfaces on a single device.
• Industrial ready: −40 °C to 100 °C operating range and surface‑mount 381‑FBGA packaging support deployment in industrial applications.
• Low‑voltage core operation: Narrow core supply window (1.045 V–1.155 V) for predictable power design and supply sequencing.
• Family feature set: ECP5 family architecture offers integrated clocking, DSP resources, SERDES/PCS and DDR support for system‑level functionality without relying solely on external IP.
• Regulatory compliance: RoHS compliance supports modern manufacturing and environmental requirements.

Why Choose LFE5U-85F-7BG381I?

The LFE5U-85F-7BG381I delivers a balance of logic density, embedded memory, and I/O resources in a compact 381‑FBGA package, backed by the architectural features documented for the Lattice ECP5 family. Its industrial temperature rating and RoHS compliance make it a practical choice for embedded systems requiring programmable logic at the system edge, industrial control applications, and designs that need integrated DSP and high‑speed serial capabilities.

As a part of the Lattice ECP5 family, this device is described in the official ECP5 datasheet and is intended for designs that demand predictable electrical characteristics, defined core voltage operation, and a rich set of family‑level features to simplify system implementation.

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