Lattice LA4128V-75TN100E: A Comprehensive Technical Overview and Application Note

The Lattice LA4128V-75TN100E is a member of the high-performance, low-power iCE40 UltraPlus™ FPGA family from Lattice Semiconductor. Fabricated on a 40 nm low-power process, this device is engineered to deliver an optimal balance of power, performance, and size, making it an ideal solution for a wide array of compute-intensive, battery-sensitive applications.

Architectural Overview and Key Specifications

At its core, the LA4128V-75TN100E features 8K Look-Up Tables (LUTs) alongside 128 KBit of Single-Port Block RAM (SPRAM). A defining characteristic of the iCE40 UltraPlus family is the integration of a Dedicated Dual 16-bit Sigma-Delta ADC, eliminating the need for an external ADC in many measurement and sensing applications. Furthermore, it incorporates hardened Intellectual Property (IP) blocks, including an I²C and SPI controller for streamlined communication with peripheral devices.

This particular device is specified in the -75 speed grade and is housed in a compact 100-pin Thin Quad Flat Pack (TQFP) package, offering a robust number of General-Purpose I/O (GPIO) pins for interfacing with external components. Its ultra-low static and dynamic power consumption is a critical feature, enabling its deployment in always-on applications.

Target Applications

The combination of programmability, low power, and integrated features positions the LA4128V-75TN100E as a premier choice for several key markets:

Mobile and Consumer Electronics: Used in smartphones, wearables, and drones for sensor bridging, sensor data processing, and power management.

Internet of Things (IoT): Serves as a flexible hardware platform for edge node processing, aggregating data from multiple sensors before transmission to a host microcontroller or cloud.

Industrial Control: Implements glue logic, motor control interfaces, and system monitoring functions in space-constrained industrial environments.

Video and Imaging: Often employed for basic image signal processing (ISP), such as image rotation, scaling, or acting as a bridge between an image sensor and a host processor.

Design and Development Support

Development for the LA4128V-75TN100E is supported by Lattice's Lattice Radiant® software, a powerful and easy-to-use design suite based on the Eclipse platform. The tool provides a complete environment for design entry, synthesis, place-and-route, and bitstream generation. Additionally, Lattice offers a range of low-cost development kits and reference designs, significantly accelerating the prototyping and product development cycle.

ICGOOODFIND

This article provides a technical overview of the Lattice LA4128V-75TN100E FPGA, highlighting its low-power architecture, integrated hardened IP blocks, and suitability for space-constrained, battery-powered applications in consumer, IoT, and industrial markets.

Keywords:

1. Low-Power FPGA

2. iCE40 UltraPlus™

3. Sensor Bridging

4. Hardened IP

5. IoT Edge Processing