Lattice LFXP2-17E-6FTN256C: A Comprehensive Technical Overview of the Low-Power FPGA

The Lattice LFXP2-17E-6FTN256C is a prominent member of Lattice Semiconductor's LatticeXP2 family of non-volatile, low-power FPGAs. This device is engineered to deliver an optimal balance of performance, power efficiency, and integration, making it a compelling solution for a wide array of applications, including consumer electronics, industrial control systems, telecommunications infrastructure, and portable medical devices.

A defining characteristic of this FPGA is its non-volatile flash technology. Unlike SRAM-based FPGAs that require an external boot PROM, the LFXP2-17E features an integrated flash cell that stores the configuration data directly on the chip. This enables instant-on operation upon power-up, significantly reducing system boot time and enhancing overall reliability by eliminating a potential point of failure. The configuration is also highly secure, as the bitstream is inherently resistant to unauthorized readback and copying.

At its core, the "-17E" designation signifies a logic density of approximately 17,000 Look-Up Tables (LUTs). This provides ample resources for implementing complex logic, arithmetic, and state machine functions. The device's architecture is further augmented by embedded block RAM (EBR), offering 106 kbits of fast, on-chip memory for data buffering and storage, and distributed RAM for more flexible, smaller memory structures.

A key advantage of the LatticeXP2 family, and this device in particular, is its exceptionally low static power consumption. The use of 90nm flash technology allows for a standby current as low as 19 µA, which is critical for battery-operated and always-on applications where power management is paramount. The device also supports TransFR (Transparent Field Reconfiguration) technology, enabling in-field updates of the logic functionality without interrupting the system's operation, a vital feature for remote maintenance and upgrades.

The package suffix "6FTN256C" provides critical information about the device's physical characteristics. It is housed in a 256-ball Fine-Pitch Thin Quad Flat Pack (FTN256) package with a 0.5 mm ball pitch. This compact, surface-mount package is designed for space-constrained PCB designs. The "6" in the speed grade indicates it is a mid-range performance part within the family.

The device boasts a rich set of I/O capabilities, supporting a wide range of single-ended and differential I/O standards, including LVCMOS, LVTTL, SSTL, HSTL, and LVDS. This flexibility allows for seamless interfacing with processors, memory devices, and other peripherals. Furthermore, it includes dedicated hardware for implementing SPI, I2C, and Timer/Counters, reducing the logic resource overhead for common system functions.

In summary, the Lattice LFXP2-17E-6FTN256C stands out as a highly integrated, secure, and power-optimized FPGA. Its combination of non-volatile technology, moderate logic density, low power draw, and small form factor makes it an ideal choice for designers looking to add programmable logic intelligence without sacrificing power budgets or board space.

ICGOODFIND: For system architects prioritizing instant-on capability, rock-bottom static power, and a high level of integration in a compact package, the Lattice LFXP2-17E-6FTN256C represents a superior and often overlooked alternative to higher-power SRAM-based FPGAs.

Keywords: Low-Power FPGA, Non-Volatile Memory, Instant-On, TransFR Technology, FTN256 Package.