SiWx917 | Wi-Fi 6 + Bluetooth LE 5.1 Wireless SoCs

SiWx917

The SiWx917 features Wi-Fi 6, Bluetooth 5.1 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.

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SiWx917 | Wi-Fi 6 + Bluetooth LE 5.1 Wireless SoCs

Description

Silicon Lab's SiWx917 SoC is ideal for ultra-low power IoT wireless devices using Wi-Fi®, Bluetooth, Matter, and IP networking for secure cloud connectivity. SiWx917 SoC includes an ultra-low power Wi-Fi 6 plus Bluetooth Low Energy (LE) 5.1 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 (ThreadArch®), baseband digital signal processing, analog front end, 2.4GHz RF transceiver and integrated power amplifier. The application subsystem consists of an ARM® Cortex®-M4 processor with FPU, embedded SRAM, FLASH, AI/ML accelerator and enhanced PSA-L2 certifiable security engine. The integrated MCU is dedicated for peripheral and application-related processing, while the ThreadArch® runs the wireless and networking stacks on independent threads, providing a fully integrated single chip solution that is ready for a wide range of embedded wireless IoT applications.

Target applications include Smart Homes, Health and Fitness, Medical, Industrial, Smart Building and Cities, Asset Tracking.

SiWx917 Specs

Ultra-Low Power Wireless System on a Chip

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