Summary of WÜRTH ELEKTRONIK PRESENTS ITS BLUETOOTH MODULE PROTEUS-III-SPI
Würth Elektronik has released the Proteus-III-SPI, a Bluetooth Low Energy 5.1 module variant using an SPI interface instead of UART. Based on the nRF52840 chipset, it supports payloads up to 964 bytes, offering four times typical BLE module throughput and 1.5× end-to-end throughput versus UART. SPI reduces application-side bottlenecks and improves power efficiency, though integration is slightly more complex; a wireless connectivity SDK is provided. The compact 8 × 12 × 2 mm module includes an integrated antenna, encryption, and six configurable IO pins for IoT applications.
Parts used in the Proteus-III-SPI:
- Würth Elektronik Proteus-III-SPI Bluetooth Low Energy 5.1 module
- Nordic Semiconductor nRF52840 chipset (integrated on module)
- Integrated antenna (on module)
- On-module encryption technology
- Six configurable IO pins (exposed by module)
- Wireless connectivity software development kit (SDK) provided by Würth Elektronik
Würth Elektronik introduces the Proteus-III-SPI Bluetooth Low Energy 5.1 module. This variant of the tried and tested Proteus-III uses an SPI instead of a UART interface. The new module, based on the Nordic Semiconductor nRF52840 chipset, exploits the possibilities of the Bluetooth Low Energy 5.1 standard—with significantly higher performance.
With a payload of up to 964 bytes, the module offers four times the throughput of most Bluetooth low-energy modules. As the SPI allows a significantly higher data rate than the UART, with 1.5 times the end-to-end data throughput, the SPI variant bypasses potential bottlenecks on the application side.
The Proteus-III-SPI variant—identical in terms of hardware—is the first choice for applications in which no free UART interface is available, or if the data throughput of the UART interface is insufficient. Another advantage: The SPI variant is more power efficient. The integration workload is slightly higher with SPI, but Würth Elektronik provides a convenient wireless connectivity software development kit (SDK) for this task.
With its Bluetooth module, measuring just 8 x 12 x 2 mm, with integrated antenna, encryption technology and six configurable IO pins, Würth Elektronik offers an interesting solution for IoT
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- What chipset is the Proteus-III-SPI based on?
It is based on the Nordic Semiconductor nRF52840 chipset. - Does the Proteus-III-SPI use UART or SPI?
The Proteus-III-SPI uses an SPI interface instead of UART. - What is the maximum payload supported by the module?
The module supports a payload of up to 964 bytes. - How does the throughput compare to most Bluetooth low-energy modules?
It offers four times the throughput of most Bluetooth low-energy modules. - Is the SPI variant more power efficient than the UART variant?
Yes, the SPI variant is more power efficient according to the article. - Does SPI provide higher end-to-end data throughput than UART for this module?
Yes, SPI provides 1.5 times the end-to-end data throughput compared to UART. - Are there integration resources available for using SPI with the module?
Yes, Würth Elektronik provides a wireless connectivity SDK to assist integration. - What are the physical dimensions of the Proteus-III-SPI module?
The module measures 8 × 12 × 2 mm.
