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BK7239N
Low Power Connectivity MCU

Strong Connection

RiseLink BK7239N uses WiFi 6, Bluetooth LE 6.0, and IEEE 802.15.4 connectivity in a low-power multi-protocol wireless MCU 

Matter Compliant

Well-suited for Matter applications across Wi-Fi and Thread, and can operate as a Matter end device within major ecosystems.

Connect Broadly

Ideal for smart home and appliances, industrial automation, smart energy, healthcare, and secure payment systems.

Low Power 

Optimized for low power usage with secured data.

Optimized for Low Power IoT

The industry is optimizing for power in smart home, energy and medical applications. The BK7239N provide low-power solutions for a wide variety of connected solutions with AI features.

 

By consolidating multiple subsystems into one platform, developers can reduce system complexity, save PCB space, and accelerate time-to-market with a cohesive connectivity MCU.

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High-Performance Edge Compute

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The BK7239N integrates a powerful MCU subsystem designed for advanced IoT applications:

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  • Arm v8-M STAR-MC1 core running at up to 240 MHz

  • Supports TrustZone technology, DSP instructions with SIMD, and includes a Nested Vectored Interrupt Controller (NVIC) with 64 interrupts

  • Delivers 3.84 CoreMark/MHz for high-performance processing

  • Features 512 KB share SRAM, 64 KB ROM, and up to 8 MB SiP PSRAM

  • Integrated SiP flash up to 16 MB and support for external flash up to 32 MB via QSPI

 

Unified Connectivity and Wireless Performance

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The BK7239N is a multi-protocol platform combining high-speed Wi-Fi 6 with the latest Bluetooth and IEEE 802.15.4 standards:

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  • Wi-Fi 6 Dual-Band: 1T1R operation in both 2.4 GHz and 5 GHz bands (802.11a/b/g/n/ac/ax) with 20/40 MHz bandwidth

  • Bluetooth Core 6.0 LE certified; supports 1 Mbps, 2 Mbps, Long Range (Coded PHY), and LE Audio with isochronous channels

  • IEEE 802.15.4 Compliant 2.4 GHz radio supporting Thread V1.4.0, Zigbee 3.0, and Matter over Thread

  • Supports Target Wake Time (TWT), OFDMA, MU-MIMO, and Antenna Diversity

 

Integrated Peripherals and Multimedia support

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The BK7239N offers a robust suite of interfaces for sophisticated device control:

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  • RGB LED controller (supporting up to 1024 beads) and 12-bit/14-bit 32-bit PWM channels

  • I2S interface (8 kHz to 384 kHz sampling) and a 14-bit AUX ADC with up to 9 external channels

  • High-Speed I/O: Supports SDIO (host/slave), QSPI (up to 80 MHz), 2x SPI, 2x I2C (including Fast-mode Plus), and 4x UART

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Local-First Security and Privacy

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Designed for secure IoT ecosystems, the BK7239N establishes a hardware root of trust:

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  • Provides Secure Boot, Secure Debug, and Provisioning

  • Hardware acceleration for AES, RSA (up to 4096), ECC, SHA256, and SM2/SM3/SM4

  • Includes a True Random Number Generator (TRNG), a Key Ladder for management, and an Anti-tamper module

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Performance Designed for the Edge

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Optimized for battery-powered devices with ultra-low power states:

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  • Shutdown Mode: 0.5 μA

  • Deep Sleep 0: 2.5 μA (Only RTC active)

  • Deep Sleep 1: 13 μA (with 128 KB SRAM retention)

  • Active RX: 9 mA (2.4 GHz) / 12 mA (5 GHz)

  • Operating voltage from 2.2 V to 5.5 V

 

Example Applications

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  • Smart door locks, sensors, lighting, and Matter-enabled hubs

  • Factory automation, smart meters, and portable medical monitor

 

Why BK7239N?

Traditional architectures required separate MCUs and wireless chips. The BK7239N consolidates these into a single hub, allowing developers to eliminate hardware complexity and focus on building intelligent, responsive experiences for the next generation of low power IoT terminals.

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