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Industry News Silicon Labs' new Bluetooth 5.2 SoC enable ten-year coin-cell battery life

| Editor: Erika Granath

Silicon Labs has launched a new Bluetooth SoC that promises a ten-years coin-cell battery life. The EFR32BG22 (BG22) combines low-power, security, wireless performance, energy efficiency, and software tools and stacks.

Silicon Labs' EFR32BG22 (BG22) SoCs provide developers with a Bluetooth connectivity solution that supports the Bluetooth 5.2 specification, Bluetooth direction finding and Bluetooth mesh.
Silicon Labs' EFR32BG22 (BG22) SoCs provide developers with a Bluetooth connectivity solution that supports the Bluetooth 5.2 specification, Bluetooth direction finding and Bluetooth mesh.
(Source: Silicon Labs)

Silicon Lab's Wireless Gecko Series 2 family is growing. The latest expansion, EFR32BG22 (BG22) SoC, provides developers with a Bluetooth connectivity solution that supports the Bluetooth 5.2 specification, Bluetooth direction finding, and Bluetooth mesh.

The BG22 family's combination of ultra-low transmit and receive power (3.6 mA TX at 0 dBm, 2.6 mA RX) and a high-performance, low-power Arm® Cortex®-M33 core (27 µA/MHz active, 1.2 µA sleep). This delivers impressive energy efficiency that can extend coin cell battery life up to ten years.

Total annual Bluetooth device shipments to grow to 5.4 billion units by 2023

According to the Bluetooth SIG, total annual Bluetooth device shipments are forecast to grow 26 percent by 2023 (from 4 billion units in 2019 to 5.4 billion units), and 90 percent of all Bluetooth devices will include Bluetooth Low Energy by 2023. Secure connectivity and extremely low power consumption will be fundamental requirements for these IoT devices.

Silicon Lab has designed the BG22 SoCs have to meet the requirements of the billions of Bluetooth-enabled IoT devices forecast to arrive in the next few years.

BG22 allows developers to investigate problems without erasing flash

One of the toughest challenges IoT developers face today is ensuring connected devices will run only genuine, trusted firmware. The BG22 SoCs provide a high level of security through Silicon Labs' Secure Boot with Root and Trust and Secure Loader capacity.

Furthermore, the new SoCs provide extensive failure analysis since it allows developers to investigate problems without erasing flash. This is possible because the software itself may be part of the root cause. The function can be achieved by developers through Silicon Labs' Secure Debug with lock/unlock cryptographic capability.

BG22 SoCs' price starts at 52 cents US

There are three Bluetooth SoC products in the family, each designed to address specific price/performance requirements for smart home, consumer, commercial, and industrial IoT applications.

• The EFR32BG22C112 SoC targets high-volume, cost-sensitive applications, providing access to 1 Mbps and 2 Mbps Bluetooth PHYs, along with a 38.4 MHz Arm Cortex-M33 core, 18 GPIOs and 352 kB of flash memory with radio characteristics of 0 dBm transmit (TX) and an industry-leading -99 dBm receive (RX) (1M PHY) sensitivity.

• The EFR32BG22C222 SoC targets applications requiring more compute power (with a 76.8 MHz M33 core), more I/O's (26 GPIOs) and higher TX power (+6 dBm).

• The EFR32BG22C224 SoC provides IQ sampling for direction finding applications and access to 125 kB and 500 kB Bluetooth LE Coded PHYs, which can increase RX sensitivity to -106 dBm. The SoC increases operating temperature to +125 °C and extends flash memory up to 512 kB to support applications requiring direction-finding capabilities or low-power mesh nodes.

Silicon Labs' BG22 SoCs' will be available in March with price starting at 52 cents US in high volumes.

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