E2 Series
SiFive’s smallest, lowest power, 32-bit core IP series.

The E2 Series is highly optimized for area and power while still offering class-leading performance. Targeted for microcontroller and embedded devices, the E2 Core can be configured to have an efficient 2-stage pipeline or a higher performance 3-stage pipeline as well as a Core Local Interrupt Controller (CLIC) enabling extremely fast interrupt response. The E2 Series can be fully customized to meet your specific requirements with options for:

  • Core performance
  • Single precision Floating Point Unit
  • Custom memory map and ports
  • Optional Tightly Integrated Memory (TIM)

E2 Series Standard Cores

E20 Standard Core

SiFive’s most efficient standard core. The E20 is well suited for MCU, IoT, and Mixed Signal applications.

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E21 Standard Core

A full featured RISC-V MCU. The E21 is great for Wearables, Sensor Fusion, Smart IoT, and general purpose MCU.

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Customize the E2 Series

The E2 Series is fully configurable to meet application specific requirements. Together we will design the perfect E2 Series Core for your application.

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Explore our other Core IP series

E3 Series

High performance 32-bit RISC-V embedded cores, the E3 Series is the most widely deployed RISC-V core in the world

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E5 Series

E5 Series embedded cores offer 64-bit performance at 32-bit price and area

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U5 Series

The world's first RISC-V Linux capable core with high performance and optimized for maximum efficiency

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