Lattice LFXP2-17E-5QN208I: A Comprehensive Technical Overview of the Low-Power FPGA
The Lattice LFXP2-17E-5QN208I is a distinguished member of Lattice Semiconductor's LatticeXP2 family, a series of non-volatile, low-power FPGAs engineered to bridge the gap between high-performance and low-cost programmable logic. This specific model encapsulates a balance of density, power efficiency, and integrated features that make it a compelling choice for a wide array of applications, from industrial control systems to portable consumer electronics.
Architectural Core and Logic Capacity
At the heart of the LFXP2-17E lies a flexible logic fabric. The "17E" designation signifies that this device contains approximately 17,000 Look-Up Tables (LUTs), which serve as the fundamental building blocks for implementing custom logic functions. This logic density is sufficient for managing complex state machines, data processing tasks, and interface bridging. The programmable routing resources interconnect these LUTs and other elements, allowing designers to create highly customized digital circuits tailored to their specific needs.
Key Differentiator: Non-Volatile Flash Technology
A paramount feature of the LatticeXP2 family is its non-volatile, flash-based configuration technology. Unlike SRAM-based FPGAs that require an external boot PROM to load the configuration bitstream on every power-up, the LFXP2-17E stores its configuration directly on-chip. This offers several critical advantages:
Instant On: The device becomes operational in milliseconds, as there is no need to fetch configuration data from an external source.
High Security: The configuration bitstream is inherently more secure against unauthorized copying, as it is stored within the FPGA itself.
Reduced Board Space and Cost: The elimination of an external configuration memory chip simplifies the bill of materials (BOM) and reduces PCB footprint.
High Immunity: The design is inherently immune to radiation-induced configuration upsets (SEU), enhancing reliability in demanding environments.
Low-Power Performance
True to its family's reputation, the LFXP2-17E-5QN208I is designed with a focus on low power consumption. This is achieved through a combination of 90nm technology node manufacturing and advanced circuit design techniques. The device exhibits low static (standby) power, making it ideal for battery-powered and power-sensitive applications. The "5" in its part number indicates it is a member of the low-power performance grade.
Advanced I/O Capabilities and Packaging
The "QN208I" suffix denotes a 208-pin Quad Flat No-leads (QFN) package. This surface-mount package offers a compact form factor with an exposed thermal pad underneath, enabling efficient heat dissipation. The device boasts a versatile I/O structure supporting a wide range of single-ended and differential I/O standards, including LVCMOS, LVTTL, SSTL, and HSTL. This flexibility allows for seamless interfacing with processors, memory devices, and various peripheral components.
Embedded Block RAM and sysCLOCK PLL
To support data-intensive applications, the FPGA integrates embedded Block RAM (EBR). These dedicated memory blocks provide fast, on-chip storage for FIFOs, buffers, and other memory functions without consuming valuable logic resources. Furthermore, the device includes sysCLOCK Phase-Locked Loops (PLLs). These PLLs are crucial for clock management, enabling functions such as clock multiplication, division, phase shifting, and jitter reduction, which are essential for synchronizing internal operations with external systems.
Typical Application Use Cases
The combination of non-volatile memory, low power, and moderate logic density makes the LFXP2-17E-5QN208I suitable for numerous markets:
Industrial: Motor control, sensor interfacing, and programmable logic controllers (PLCs).
Communications: Portable and handheld equipment, network interface cards.
Consumer: Digital cameras, personal media players, and other portable gadgets.
Automotive: Infotainment systems and driver assistance modules.
Medical: Portable diagnostic and monitoring equipment.
In summary, the Lattice LFXP2-17E-5QN208I stands out as a highly integrated, secure, and power-optimized FPGA solution. Its inherent non-volatility eliminates the need for external boot memory, its low-power characteristics extend battery life, and its balanced logic and memory resources provide ample capability for complex digital design. For engineers seeking a reliable, cost-effective, and secure programmable logic device for power-conscious applications, this FPGA remains a formidable contender.
Keywords: Low-Power FPGA, Non-Volatile Configuration, LatticeXP2 Family, 17K LUT, QFN Package
