Silicon Labs SiWx917 Wi-Fi® 6 Plus BLE 5.4 Wireless SoC

Silicon Labs SiWx917 Wi-Fi® 6 Plus BLE 5.4 Wireless SoC offers the lowest power in the family of Silabs Wi-Fi 6 devices. The SiWx917 is ideal for ultra-low power IoT wireless devices using Wi-Fi, BLUETOOTH®, Matter, and IP networking for secure cloud connectivity. The SoC is optimal for developing battery-operated devices that need extended battery life.

The Silicon Labs SiWx917 SoC includes an ultra-low power Wi-Fi 6 plus 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 7mm x 7mm QFN package. The wireless subsystem comprises a multi-threaded processor (ThreadArch®) running up to 160MHz, baseband digital signal processing, analog front end, 2.4GHz RF transceiver, and integrated power amplifier. The application subsystem incorporates an Arm® Cortex®-M4F running up to 180MHz, embedded SRAM, FLASH, AI/ML accelerator, and enhanced PSA-L2 certifiable security engine. The Arm Cortex-M4F is dedicated to peripheral and application-related processing. At the same time, ThreadArch runs the wireless and networking stacks on independent threads, thus providing a fully integrated solution ready for a wide range of embedded wireless IoT applications.

Features

Ultra-low power wireless system on a chip
- Wi-Fi 6 single band 2.4GHz and Bluetooth Low Energy 5.4 wireless radio
- Arm Cortex-M4F application MCU up to 180MHz
- Integrated baseband processor, RF transceiver, high-power amplifier, balun, and T/R switch
- Integrated AI/ML accelerator using matrix-vector processor (MVP)
- Embedded SRAM up to 672KB
- Embedded Flash up to 8MB and supports optional external Flash
- Embedded pSRAM up to 8MB and supports optional external pSRAM
- Integrated Wi-Fi stack, TCP/IP stack, Bluetooth stack supporting wireless coexistence and Matter
Wi-Fi 6
- Compliant to 2.4GHz, single-spatial stream IEEE 802.11 b/g/n/ax
- Supports 802.11ax 20MHz features such as OFDMA, MU-MIMO, and Target Wake Time (TWT)
- Transmit power up to +21dBm with integrated PA
- Receive sensitivity as low as -98.5dBm
- Data rates up to 86Mbps (802.11ax MCS0 to MCS7)
- Operating frequency range from 2412MHz to 2484MHz
Matter over Wi-Fi with Bluetooth LE commissioning
Microcontroller subsystem
- Arm Cortex-M4F core with up to 180MHz
- 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 at 4x 16/32-bit, 1x 24-bit, WDT, RTC
- Up to 46x GPIOs (GPIO multiplexer)
- Analog Peripherals: 12-bit 16-ch, 5Msps ADC, 10-bit DAC
- 3x Op-amps, 2x comparators, IR detector, and temperature sensor, and 8x capacitive touch sensor inputs
Simplicity Studio v5, GitHub development environment

Bluetooth Low Energy 5.4
- Transmit power up to +21dBm with integrated PA
- -106dBm receive sensitivity of LE at -95dBm, LR 125Kbps
- 2402MHz to 2480MHz operating frequency range
- Bluetooth Low Energy 1Mbps, 2Mbps and Long-Range modes (125kbps, 500kbps)
Best-in-class security
- PSA-L2 certifiable
- QSPI Secure XIP from Flash (with AES-XTS)
- Secure Zone separated TEE
- TRNG, Root of trust (PUF)
- Secure boot and OTA
- Advanced cryptographic accelerators
Ultra-low system power consumption
- Wi-Fi standby associated mode current of 51μA at 1s intervals
- Deep sleep current of <1μA and sleep/standby current (RAM retention) of <10μA
- Low MCU sub-system active current of 19μA/MHz in LP mode
Software and protocol support
- Integrated Wi-Fi stack, TCP/IP stack, and Bluetooth stack supporting wireless coexistence
- Support for Embedded Client mode, Access Point mode (up to 8x clients), concurrent Wi-Fi and Bluetooth LE mode
- Supports advanced Wi-Fi and Networking security features of WPA/WPA2/WPA3-Personal and Enterprise security
- Integrated TCP/IP stack supports HTTP/HTTPS, DHCP, SSL/TLS1.3, and MQTT
- Wireless firmware upgrade and provisioning
- Supports both hosted Radio Co-Processor (RCP), and Network Co-processor (NCP) modes and host-less (SoC) modes
Operating conditions
- Wide operating supply range of 1.75V to 3.63V
- Operating temperature of -40°C to +85°C/+105°C
QMS at 7.00mm x 7.00mm x 0.85mm package size