Low-power 32-bit RISC-V processor

Overview

The icyflex-V 32-bit processor core is based on the RV32IMC open-instruction set architecture (ISA) defined by the RISC-V foundation and, as such, is supported by standard state-of-the-art development tools (both open-source and proprietary). The 4-stage pipeline is optimized for power and area efficiency.

Additional customizations are available on demand (e.g. RV32E area efficient implementation).
The icyflex-V core targets traditional micro-controller applications and is well suited for IoT, wearables and mixed signal applications.

The core IP comes along with various bus interconnect IP’s and standard peripherals. For example, implementations relying on an embedded flash will benefit from an energy oriented cache architecture.

Key Features

  • RISC-V RV32 instruction set:
    • I > full support
    • M > partial support: no hardware divider
    • C > full support
  • Machine mode only
  • 32 vectorized interrupts
  • Standard debug as defined per RISC-V
  • 3.06 CoreMark/MHz
  • 1.35 DMIPS/MHz
  • Gate count: 26 kgates

Benefits

  • e.g. Implementation in TSMC 55 nm LP HVT
    • Core only area : 0.056 mm2
    • Max. frequency (SS corner, 1.08 V, -40 °C) : 120 MHz
    • Power consumption 18 uW/MHz (TT corner, 1.2 V, 25 °C)

Block Diagram

Low-power 32-bit RISC-V processor Block Diagram

Applications

  • IOT
  • Wearables
  • Mixed-signal applications

Technical Specifications

Foundry, Node
Various
Maturity
FPGA and silicon proven
Availability
Available now
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Semiconductor IP