E2 series
E20
The SiFive E20 Standard Core is an extremely efficient implementation of the E2 Series configured for very low area and power. The E20 brings the power of the RISC-V software ecosystem to efficiently address traditional 8-bit and 32-bit microcontroller applications such as IoT, Analog Mixed Signal, and Programmable Finite State Machines.
Further optimize the E2 Core for the smallest area using SiFive Core Designer.
E20
Key Features
- RISC-V ISA - RV32IMC
- Machine Mode only
- 2-stage pipeline
- System Port for external memory accesses
- Core Local Interrupt Controller (CLIC) with 32 interrupts
- Advanced debug with 4 hardware breakpoints/watchpoints
- 1.84/1.32 DMIPS/MHz (Best Effort/Legal)
- 2.69 CoreMark/MHz
- Detailed Power, Performance, and Area (PPA) Information
a. E20 Standard Core Configuration, using GCC. The first score is using legal dhrystone compiler flags. The second score uses function inlining and link time optimizations.
b. E20 Standard Core Configuration, using GCC
c. CLIC Vectored Mode
E20
Development Kit
Dev Kit Deliverables
- RTL Evaluation
- Test Bench RTL
- Software Development Kit
- FPGA Bitstream
- Documentation
Series Overview
E2 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 be as small as 13.5k gates with an efficient 2‑stage pipeline or configured for higher performance with a 3‑stage pipeline, hardware floating-point, instruction cache, and more.
With SiFive Core Designer, the E2 Series can be fully customized to meet your specific requirements.
E2 Series
Highlights
Key Features
- Configurable core performance
- Floating Point Unit, supporting Double, Single and Half precision
- Custom memory map and ports
- Optional Tightly Integrated Memory (TIM)
- RV32E support with the smallest core configuration as small as 13.5k gates and is .005mm2 in 28nm
- SiFive Insight Advanced Trace and Debug
- Bit manipulation extension
Applications
- MEMS Sensors
- Power managment
- Digital motor control
- Low-power MCUs
- Health wearable monitors
- Environmental monitors
Core Evaluation
From idea
to reality.
Ready to see your code in action? The E20 Development Kit enables free evaluation of SiFive RISC-V Core IP.
Key
Deliverables
Evaluation RTL
- Full-Functional, synthesizable Verilog RTL
- Run it in your own simulator
- Simple, no-cost evaluation license
FPGA Bitstream
- Fully-functional SiFive RISC-V Core Complex with system peripherals
- High Performance - 32.5 MHz emulation
- Upload your own programs using the Freedom E SDK
Compatible with the Arty A7-100T and Xilinx VCU118 FPGA Development Boards:
