Cypress Semiconductor CYW20719 dual-mode Bluetooth wireless microcontroller

The CYW20719 dual-mode Bluetooth wireless microcontroller, from Cypress Semiconductor, has been optimised for Internet of Things (IoT) applications.

The ultralow-power microcontroller device complies with Bluetooth core specification version 5.0 (with LE 2 Mbps optional feature) with support for mesh networking. Forged using a 40 nm CMOS low-power fabrication process, the system-on-chip (SoC) employs a high level of performance and integration to help reduce external components while minimising the footprint of the application.

The microcontroller subsystem consists of a 96 MHz Arm Cortex-M4 microcontroller with floating point unit (FPU), 512 KB of RAM, 2 MB of ROM (containing the stack and drivers) and 1 MB of probe-proof flash memory. The probe-proof flash, once programmed, not only prevents hackers from reprogramming the device to gain access to sensitive user data or payment information, it also inhibits competitors from doing a flash dump to reverse engineer the firmware IP. For additional security, the product includes various security functions — such as ECDH, RSA, AES and SHA/MD5 hashing functions — as well as a hardware accelerator to ensure best-in-class encryption for Bluetooth.

The ultralow-power radio in the device delivers a Bluetooth low energy (BLE) receive current (Rx) of 5.9 mA with sensitivity of -95.5 dBm and a transmit current (Tx) of 5.6 mA at 0 dBm. Ultralow current consumption enables extended battery life for a variety of wireless IoT devices, including wearables and fitness bands, home automation, medical devices and proximity sensors.

It is supported by the CYW920719Q40EVB-01 evaluation kit and the Cypress Wireless Internet Connectivity for Embedded Devices (WICED) Studio IoT development platform, which provides all the application programming interfaces, code snippets and demo applications to accelerate the development process.