Bluetooth 4.2 SoC fit for 1.5V or 3V-powered wearables

November 07, 2016 // By Julien Happich
EM Microelectronic's EM9304 is a tiny, low-power, system-on-chip (SoC) optimized for Bluetooth v4.2 low energy enabled IoT, wearable and smart electronics products.

The EM9304 is architected for flexible usage in a variety of Bluetooth low energy (BLE) applications. For simple applications such as beacons or smart sensing wearables, the EM9304 can be used standalone, or connected to a variety of sensors with standard serial interfaces. Users can also take advantage of a 32-bit processor with a floating-point-unit (FPU) and on-chip NVM. Alternatively, the EM9304 can be connected with a standard MCU or custom ASIC for customers requiring a just a simple and easy-to-implement BLE add-on function to existing applications.

The EM9304 is the smallest BLE v4.2 SoC available on the market and features a best-in-class 2.4GHz transceiver with state-of-the art receiver sensitivity, claims the manufacturer. Transmit power is programmable for optimized current consumption. The EM9304 includes a sophisticated on-chip power management system with automatic configuration for 1.5V or 3V batteries. It is compatible with standard 1.5V MCU’s such as ultra-low-power watch microprocessors from EM Microelectronic, or with standard 3V microprocessors from many vendors. The EM9304 comes with 128kB OTP for applications, 48kB RAM to support application development, and up to 20kB RAM of retention data RAM.

Included in ROM is a certified Bluetooth v4.2 stack with proprietary Application Controller Interface (ACI) and Link layer with a Host Controller Interface (HCI). It supports secure connections, extended packet length, and multiple connections. Current consumption is minimized for all modes of the application utilizing an efficient scheduler and memory manager. Furthermore, the EM9304 comes with firmware over-the-air (FOTA) updating routines that can run per application, function, or configuration to minimize download time.

Visit EM Microelectronic at www.emmicroelectronic.com