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Guide to the FPGA LFE3-35EA-6FN672C from Lattice

The LFE3-35EA-6FN672C from Lattice Semiconductor is an FPGA designed to deliver strong performance while keeping power use low. It provides flexible logic resources, high-speed interfaces, and built-in memory for handling complex digital tasks. With its compact BGA package, it fits easily into space-constrained boards, making it ideal for embedded and communication systems. You can use it to manage control logic, data routing, or signal processing without adding extra hardware. It’s built for reliable operation across a wide temperature range and maintains efficiency even under continuous workloads. Whether used in automation, networking, or IoT, this device helps you create designs that are both powerful and energy-conscious.

Catalog

LFE3-35EA-6FN672C Overview

The LFE3-35EA-6FN672C is an FPGA from Lattice Semiconductor’s ECP3 series, designed to balance performance with low power use. It handles a wide range of digital processing tasks while keeping energy consumption low, making it practical for embedded, communication, and industrial applications. You can use it in systems that need efficient logic control, memory resources, and flexible I/O options without drawing much power. Its compact BGA package also helps simplify board design where space is limited.

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LFE3-35EA-6FN672C Banks

This diagram shows how the I/O banks are arranged around the LFE3-35EA-6FN672C FPGA. Each labeled section, such as Bank 0 through Bank 7, represents a group of input and output pins that connect the chip to other components on a circuit board. The diagram also highlights reference voltage pins (VREF), power pins (VCCIO), and ground connections (GND) placed along the chip edges. At the bottom, the SERDES Quads section handles high-speed serial communication.

Features of LFE3-35EA-6FN672C

High Logic Density for Flexible Design

The LFE3-35EA-6FN672C gives you access to 4,125 Configurable Logic Blocks and 33,000 logic elements, allowing you to build custom digital designs with ease. This flexibility helps you handle complex tasks without needing multiple chips, keeping your setup efficient and compact.

Generous On-Chip Memory

With over 1.3 million RAM bits available, this FPGA lets you store and manage data smoothly within the device. Whether you’re working on signal processing or embedded control, the built-in memory helps maintain fast and reliable performance.

Wide Range of I/O Options

You get 310 user I/O pins, which means you can connect the LFE3-35EA-6FN672C to a variety of external devices and systems. This makes it easier to integrate into existing designs and expand functionality without complicated wiring.

Efficient Low-Voltage Operation

The FPGA operates between 1.14V and 1.26V, helping reduce overall power consumption while maintaining stable performance. You can count on it to run efficiently, especially in applications that demand energy savings or compact power systems.

Reliable Thermal Performance

Designed to function within a temperature range of 0°C to 85°C (TJ), the LFE3-35EA-6FN672C stays dependable even in demanding environments. You can trust it to deliver consistent operation across different conditions.

Compact and Durable Package Design

Housed in a 672-FPBGA (27x27) package, this FPGA fits well in space-limited boards. Its fine-pitch layout allows high-density mounting, making it suitable for modern compact electronics.

Easy Surface-Mount Integration

The surface-mount design helps you install the chip securely on your PCB. It provides better mechanical stability and reliable electrical connections, making your final product more durable and consistent.

Optimized for Cost-Effective Performance

As part of Lattice’s ECP3 series, the LFE3-35EA-6FN672C offers a balanced mix of speed, performance, and affordability. It’s built to meet your logic needs without adding unnecessary complexity or cost to your design.

LFE3-35EA-6FN672C Technical Specifications

Product Attribute	Attribute Value
Manufacturer	Lattice Semiconductor
Voltage - Supply	1.14V ~ 1.26V
Total RAM Bits	1358848
Supplier Device Package	672-FPBGA (27x27)
Series	ECP3
Package / Case	672-BBGA
Package	Tray
Operating Temperature	0°C ~ 85°C (TJ)
Number of Logic Elements/Cells	33000
Number of LABs/CLBs	4125
Number of I/O	310
Mounting Type	Surface Mount
Base Product Number	LFE3-35

Simplified Block Diagram of LFE3-35EA-6FN672C

This diagram shows different functional sections like system I/O banks, DSP blocks, memory blocks, and clock management areas arranged in a grid layout. The routing paths connect these sections to allow fast communication across the FPGA. Each labeled area represents parts that handle logic, data storage, and high-speed signal processing. The bottom of the diagram highlights the SERDES channels that support data rates up to 3.2 Gbps, while the sides display input and output interfaces.

PFU Diagram of LFE3-35EA-6FN672C

It highlights four slices, labeled Slice 0 through Slice 3, each containing logic elements that process and store data. The first three slices include lookup tables (LUT4s) and flip-flops connected by carry logic, allowing for flexible data handling and arithmetic operations. Slice 3 includes two LUT4s without registers. Arrows labeled “From Routing” and “To Routing” illustrate how signals flow into and out of the PFU, helping different parts of the FPGA communicate efficiently.

Applications of LFE3-35EA-6FN672C

Industrial Automation and Control Systems

The LFE3-35EA-6FN672C works well in industrial automation setups, where you need dependable control logic and smooth communication between devices. You can use it for programmable controllers, motor drivers, and sensor management, helping machines operate efficiently and respond accurately to changing conditions.

Medical Devices and Signal Processing

In medical equipment, this FPGA supports precise data collection and real-time signal processing. It can handle imaging systems, diagnostic tools, and patient monitoring devices, allowing fast response and consistent performance while keeping power use low.

Telecommunications and Networking Equipment

You can use the LFE3-35EA-6FN672C in networking hardware for packet processing, routing, and data control. Its flexible logic structure makes it ideal for base stations, routers, and line cards that need reliable, high-speed communication handling.

Automotive Electronics and Smart Systems

In vehicles, this FPGA supports infotainment systems, driver-assistance features, and in-car communication networks. It helps coordinate multiple electronic functions smoothly, contributing to a better driving experience and more efficient vehicle systems.

Consumer Electronics and Embedded Devices

The LFE3-35EA-6FN672C fits easily into everyday electronic products like smart displays, entertainment systems, and connected home devices. Its low power needs and compact package make it a good match for modern, space-saving designs.

IoT Systems and Edge Control Modules

This FPGA is also a strong choice for IoT applications. It can act as the logic core for gateways, power management systems, or small-scale computing modules. Its efficient design allows you to process data locally, saving energy and improving response time in connected environments.

LFE3-35EA-6FN672C Advantages and Disadvantages

Advantages

• Runs efficiently with a good balance between power use and performance

• Offers flexible logic that fits a wide range of embedded designs

• Works smoothly with Lattice Diamond and Radiant design tools

• Built for reliability and meets ROHS3 environmental standards

• Easy to move between other devices in the same ECP3 family

• Handles signal processing well with low-latency connections and DSP support

• Compact size makes it ideal for tight PCB layouts

Disadvantages

• Has fewer logic elements compared to larger FPGA families like Kintex or Cyclone

• Operates only within a 0°C to 85°C temperature range, limiting outdoor use

• Contains fewer high-speed transceivers for bandwidth-heavy projects

• Requires learning Lattice’s own software tools if you’re used to other platforms

LFE3-35EA-6FN672C Alternatives

Part Number	Manufacturer	Key Features	Use Case/Notes
LFE3-35EA-6FN672I	Lattice Semiconductor	This is an ECP3 FPGA with ~33,000 logic elements, up to 310 I/Os, and supply voltage 1.14 V to 1.26 V.	Good for high-density logic designs where many I/O lines are needed.
LFE3-35EA-6LFN672I	Lattice Semiconductor	Similar to above, ~33,000 logic elements, 310 I/Os, same voltage range. The “L” prefix often indicates a low-power variant.	Use in designs where power saving is more critical (e.g. battery-sensitive systems).
LFE3-35EA-6FTN256C	Lattice Semiconductor	ECP3 FPGA with ~33,000 logic elements, 133 I/Os, supply 1.14 V to 1.26 V, in a 256-pin ftBGA package.	Useful when fewer I/O pins are needed and a smaller package is preferred (e.g. space constrained boards).

About Lattice Semiconductor

Lattice Semiconductor is a trusted name in programmable logic devices, known for creating solutions that balance performance and power efficiency. The company focuses on making flexible, easy-to-use products that fit a wide range of applications, from communication systems to consumer electronics. When you choose a Lattice device like the LFE3-35EA-6FN672C, you get technology built with reliability and long-term use in mind. Lattice continues to design compact and efficient FPGAs that help you bring new ideas to life while keeping designs simple and practical.

Conclusion

The LFE3-35EA-6FN672C gives you a practical mix of speed, flexibility, and efficiency in one chip. Its high logic density and on-chip memory let you handle many digital operations within a compact form. With strong I/O support and low power needs, it fits well in automation, communication, and IoT projects. You can depend on it for steady performance even in demanding systems. This FPGA helps you simplify your setup without giving up control or reliability. It’s a smart option when you need dependable performance in energy-efficient designs.