SiWx915 Wi-Fi 6 plus Bluetooth LE 5.4 Wireless SoCs

14/11/2023

Our SiWx915 SoC is the second in our family of Wi-Fi 6 devices, and is ideal for energy efficient or line powered IoT wireless devices using Wi-Fi®, Bluetooth Low Energy (LE), Matter, and IP networking for cloud connectivity. SiWx915 SoC includes a Wi-Fi 6 plus Bluetooth LE wireless CPU subsystem, and an integrated micro-controller (MCU) application subsystem, Security, memory, peripherals subsystem all in a single 6×6 mm QFN package. The wireless subsystem consists of a multi-threaded processor (ThreadArch®) 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 enhanced security engine designed for PSA-L2. The ARM® Cortex®-M4F is dedicated for peripheral and application related processing, while the ThreadArch® runs the wireless and networking stacks on independent threads, thus providing a high performance, fully integrated solution that is ready for a wide range of embedded wireless IoT applications

Wi-Fi 6 and Bluetooth LE 5.4, Matter ready

Integrated MCU

ARM® Cortex®-M4 processor with FPU

SiWx915 Specs

Low Power Wireless System on a Chip

Wi-Fi 6 single band 2.4 GHz and Bluetooth Low Energy 5.4 wireless radio
ARM® Cortex®-M4F application MCU up to 180 MHz
Integrated baseband processor, RF transceiver, high-power amplifier, balun and T/R switch
Integrated security engine designed for PSA-L2
Embedded SRAM up to 672 KB
Embedded Flash up to 8 MB and optional external pSRAM support
Integrated Wi-Fi stack, TCP/IP stack, Bluetooth stack supporting wireless coexistence and Matter

Wi-Fi 6

Compliant to 2.4 GHz, single-spatial stream IEEE 802.11 b/g/n/ax
Support for 802.11ax 20 MHz features such as OFDMA, BSS Coloring, MU-MIMO, and Target Wake Time (TWT)
Transmit power up to +21 dBm with integrated PA
Receive sensitivity as low as -98.5 dBm
Data Rates: up to 86 Mbps (802.11ax MCS0 to MCS7)
Operating frequency range: 2412 MHz – 2484 MHz

Bluetooth Low Energy 5.4

Transmit power up to +21 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)

Matter Support

Matter over Wi-Fi with Bluetooth LE commissioning

Microcontroller Subsystem

ARM® Cortex®-M4F 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, USART, UART, SPI, I2C, I2S, SIO, PWM, QEI
Timers: 16/32-bit, 1x 24-bit, WDT, RTC
Up to 22 GPIOs (GPIO Multiplexer)
Analog Peripherals – 12-bit 16-ch, 5 Msps ADC, 10-bit DAC
Op-amps Comparators, IR detector and Temp Sensor, capacitive touch sensor inputs

Best-in-Class Security

Security engine designed for PSA-L2
QSPI Secure XIP from Flash (w/ AES-XTS)
Secure Zone, Separated TEE
TRNG, Root of trust (PUF)
Secure Boot & OTA, Anti-roll back
Advanced Cryptographic Accelerators

Low System Power Consumption

Wi-Fi Standby Associated mode current: 120 μA @ 1-second interval
Low MCU Sub-system active current: 50 μA/MHz in LP mode

Software and Protocol Support

Integrated Wi-Fi stack, TCP/IP stack, Bluetooth stack supporting wireless coexistence
Support for Embedded Client mode, Access Point mode, Concurrent Wi-Fi and Bluetooth LE mode in client mode
Supports advanced Wi-Fi and Networking security features: WPA/WPA2/WPA3-Personal and Enterprise security
Integrated TCP/IP stack supports HTTP/HTTPS, DHCP, SSL/TLS1.3, MQTT
Wireless firmware upgrade and provisioning
Supports both hosted modes, Radio Co-processor (RCP), Network Co-processor (NCP) and host-less (SoC) modes

Operating Conditions

Wide operating supply range: 1.75 V to 3.63 V
Operating temperature: -40°C to +85°C

Package Size

QMS: 6.00 mm x 6.00 mm x 0.85 mm

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