Beyond the CPU and GPU: SiFive in Datacenter Infrastructure
How embedded RISC-V processors in NICs, retimers, optics, switches, and security chips are overcoming modern scaling limits
Vendor:
Sifive, Inc.
Category:
CPU
E21 High-performance, full-featured Embedded processor
The SiFive E21 Standard Core is a high-performance, full-featured embedded processor designed to address microcontroller applicat…
Overview
The SiFive E21 Standard Core is a high-performance, full-featured embedded processor designed to address advanced microcontroller applications such as Sensor Fusion, Smart IoT, Wearables, Connected Toys, and more. Separate Instruction and Data Buses, along with 2 banks of Tightly Integrated Memory (TIMs) make the E21 an ideal choice for applications with deterministic or demanding memory requirements.
Key features
- RISC-V ISA - RV32IMAC
- Machine and User Mode with 4 Region Physical Memory Protection
- 3-stage pipeline with Simultaneous Instruction and Data Access
- 2 Banks of Tightly Integrated Memory
- System, Peripheral, and Front Ports
- CLIC interrupt controller with 127 interrupts
- Advanced debug with 4 hardware breakpoints/watchpoints
- 2.27/1.46 DMIPS/MHz (Best Effort/Legal)
- 3.1 CoreMark/MHz
Block Diagram
E21 block diagram
Specifications
Identity
Part Number
E21
Vendor
Sifive, Inc.
Type
Silicon IP
Files
Note: some files may require an NDA depending on provider policy.
Provider
HQ:
USA
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Frequently asked questions about CPU IP cores
What is E21 High-performance, full-featured Embedded processor?
E21 High-performance, full-featured Embedded processor is a CPU IP core from Sifive, Inc. listed on Semi IP Hub.
How should engineers evaluate this CPU?
Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this CPU IP.
Can this semiconductor IP be compared with similar products?
Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.