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Silicon Labs
SiWx917 | Wi-Fi 6 + Bluetooth LE 5.4 Wireless SoCs
SiWx917
The SiWx917 features Wi-Fi 6, Bluetooth 5.4 LE, and an integrated applications processor. It's Matter-ready with industry-leading energy efficiency, ideal for battery-powered IoT devices with always-on cloud connectivity.
DescriptionSpecificationData Sheet
Silicon Lab's SiWx917 SoC is our lowest power Wi-Fi 6 SoC, ideal for ultra-low power IoT wireless devices using Wi-Fi®, Bluetooth, Matter, and IP networking for secure cloud connectivity. It is optimal for developing battery operated devices that need long battery life. SiWx917 SoC includes an ultra-low power Wi-Fi 6 and Bluetooth Low Energy (LE) 5.4 wireless CPU subsystem, and an integrated micro-controller (MCU) application subsystem, security, peripherals and power management subsystem all in a single 7x7 mm QFN package. The wireless subsystem consists of a multi-threaded processor running up to 160 MHz, baseband digital signal processing, analog front end, 2.4 GHz RF transceiver and integrated power amplifier. The application subsystem consists of an ARM® Cortex®-M4F running up to 180 MHz, embedded SRAM, FLASH, and Sensor Hub. The ARM® Cortex®-M4F is dedicated for peripheral and application-related processing, while the multi-threaded processor runs the wireless and networking stacks on independent threads, thus providing a fully integrated solution that is ready for a wide range of embedded wireless IoT applications.
Target applications:
Wi-Fi 6
Bluetooth Low Energy 5.1
Microcontroller Subsystem
Best-in-Class Securiy
Ultra-Low System Power Consumption
Software and Protocol Support
Operating Conditions
Package Size
Development Environment
*Silicon Labs Authorized Distributor
Target applications:
- Smart Homes
- Consumer Health and Wearables
- Medical
- Industrial
- Retail
- Smart Building and Cities
- Asset Tracking
- Wi-Fi single band 2.4 GHz and Bluetooth Low Energy 5.1 wireless radio
- Quad-thread ThreadArch® processor up to 160 MHz
- ARM® Cortex®-M4 processor with FPU application MCU up to 180 MHz
- Integrated baseband processor, RF transceiver, high-power amplifier, balun and T/R switch
- Integrated PSA-L2 certifiable security engine, and AI/ML accelerator
- Embedded SRAM up to 672 KB FLASH up to 8 Mb and supports opt external PSRAM
Wi-Fi 6
- Compliant to IEEE 802.11ax, 2.4 GHz, 20 MHz, single-spatial stream
- Supports 802.11ax features such as OFDMA, UL/DL MU-MIMO, and Target Wake Time (TWT)
- Transmit power up to +21 dBm with integrated PA
- Receive sensitivity as low as -98 dBm
- Data Rates: 802.11ax MCS0 to MCS7
- Operating frequency range: 2412 MHz - 2484 MHz
Bluetooth Low Energy 5.1
- Transmit power up to +19 dBm with integrated PA
- Receive sensitivity: LE: -95 dBm, LR 125 Kbps: -106 dBm
- Operating frequency range: 2402 MHz - 2480 MHz
- Bluetooth Low Energy 1 Mbps, 2 Mbps and Long-Range modes (125 kbps, 500 kbps)
Microcontroller Subsystem
- ARM® Cortex®-M4 processor FPU core with up to 180 MHz
- Integrated FPU, MPU, and NVIC
- In-System Programming (ISP) and Over-the-Air (OTA) wireless firmware update
- Power-On Reset (POR), Brown/Black-out and Black-out Detection
- Rich set of Analog and Digital Peripherals
- Digital Peripherals - SDIO, 1x USART, 2x UART, 4x SPI, 3x I2C, 2x I2S, SIO, PWM, QEI
- Timers: 4x 16/32-bit, 1x 24-bit, WDT, RTC
- Up to 46 GPIOs (GPIO Multiplexer)
- Analog Peripherals - 12-bit 16-ch, 5 Msps ADC, 10-bit DAC
- 3x Op-amps 2x Comparators, IR detector and Temp Sensor, 8 capacitive touch sensor inputs
Best-in-Class Securiy
- PSA-L2 Certifiable
- QSPI Secure XIP from Flash (w/ AES-XTS)
- Secure Zone, Separated TEE
- TRNG, Root of trust (PUF)
- Secure Boot & OTA
- Advanced Cryptographic Accelerators
Ultra-Low System Power Consumption
- Wi-Fi Standby Associated mode current: 50 μA @ 1-second interval
- Deep sleep current < 1 μA, Sleep/Standby current (RAM retention) < 10 μA
- Low MCU Sub-system active current: 19 μA/MHz in LP mode
Software and Protocol Support
- Integrated Wi-Fi stack, TCP/IP stack, Bluetooth stack supporting wireless coexistence
- Matter over Wi-Fi with Bluetooth LE commissioning
- Support for Embedded Client mode, Access Point mode, Concurrent Wi-Fi and Bluetooth LE mode
- Supports advanced Wi-Fi and Networking security features: WPA2/WPA3-Personal and Enterprise security
- Integrated TCP/IP stack supports HTTP/HTTPS, DHCP, SSL/TLS1.3, MQTT
- Wireless firmware upgrade and provisioning
- Supports host-less SoC modes and hosted (Transceiver and Network Co-processor (NCP) modes
Operating Conditions
- Wide operating supply range: 1.75 V to 3.63 V
- Operating temperature: -40°C to +85/105°C (industrial grade)
Package Size
- QFN: 7.00 mm x 7.00 mm x 0.85 mm
Development Environment
- Simplicity Studio v5
*Silicon Labs Authorized Distributor
