Infineon Technologies has released eight new variants of its AIROC CYW20829 Bluetooth Low Energy 5.4 microcontrollers (MCUs), comprising system-on-chip (SoC) and module configurations. Infineon says these devices are optimized for various industrial, automotive, and consumer use cases.
With its high level of integration, the CYW20829 is designed to reduce bill-of-material (BOM) component counts, yielding lower costs and more compact circuit designs. The RF chips also come with the backing of Infineon’s robust development infrastructure that emphasizes security and critical data protection.
CYW89829 automotive-grade Bluetooth LE SoC
The new 2.4 GHz radios are used in applications such as PC accessories, low-energy audio, wearables, asset trackers, and more. The AIROC CYW89829 variant for the automotive space supports applications such as car access and wireless battery management systems (wBMS).
Most of the new parts are currently sampling with the SoC solutions available in standard QFN or BGA package options.
Key Features of the AIRO CYW20829
The AIROC CYW20829 Bluetooth Low Energy 5.4 MCU (datasheet linked) includes a 48/96-MHz Arm Cortex-M33 CPU with a single-cycle multiply and memory protection unit (MPU). A separate 48 MHz Arm Cortex-M33 CPU includes a 2.4 GHz RF transceiver, a 50-Ω antenna driver (to drive the external antenna), and digital PHY.
The RF transceiver can be programmed to transmit at a power level of up to 10 dBm. It is powered from a 3.0 V supply through an internal buck converter and consumes about 17 mA at full-rated transmit power.
CYW20829 BLE MCU block diagram.
On the receive side, the transceiver has an RX sensitivity of -98 dBm at LE 1 Mbps, consuming just 5.6 mA. The entire chip runs on 1.7 V to 3.6 V supplies and includes standard communication interfaces, analog peripherals (including 12-bit, sigma-delta ADC), and 256 KB of SRAM with power and data retention control.
General-Purpose Bluetooth LE Modules
The new product release includes the CYW20829B0-P4EPI100 and CYW20829B0-P4TAI100 modules in a 14.5 mm x 19 mm package. Both are designed for general-purpose Bluetooth LE use cases, including asset tracking and power tools.
CYW20829B0-P4XXI100 module with trace antenna
Compared to the silicon SoC solutions, the modules are fully certified and tested Bluetooth LE radios that can be incorporated directly into the customers’ end applications.
For the integrated antenna, the CYW20829B0-P4XXI100 module features an integrated trace antenna option that supports an industrial, scientific and medical (ISM) band frequency range of 2,400 MHz–2,500 MHz, a typical peak gain of -0.5 dBi, and a minimum return loss 10 dB.
The Automotive-Specific Variant
The AECQ-100 Grade 2-qualified AIROC CYW89829 Bluetooth LE MCU is the automotive variant of the CYW20829.
Wireless battery management system (wBMS). Image (modified) used courtesy of Analog Devices
In an EV, a wBMS replaces extensive wire harnessing between cells, modules, and the centralized battery management systems with a wireless connectivity solution based on MCUs like the CYW89829. Eliminating the wiring in a BMS can reduce costs and complexity while increasing the reliability and safety of the EV’s battery system. The automotive CYW89829 SoC is offered in BGA77 and QFN40 package options.
Unless otherwise specified, all images are used courtesy of Infineon.
