SLWRB4253A

EFR32FG12 2.4 GHz/915 MHz Dual Band 19 dBm Radio Board BRD4253A Reference Manual The BRD4253A Flex Gecko Radio Board enables developers to develop proprietary wireless applications. The board contains a Flex Gecko Wireless System on Chip RADIO BOARD FEATURES 2.4 GHz and 915 MHz Dual Band and optimized for operation with 19 dBm output pow- er. For the 2.4 GHz band with the on-board printed antenna and RF connector radiated Wireless SoC: EFR32FG12P433F1024GL125 and conducted testing is supported. For the 915 MHz band the on-board SMA connec- tor enables conducted testing and attachment of external whip antenna for radiated CPU core: ARM Cortex -M4 with FPU tests. Flash memory: 1024 kB RAM: 256 kB The BRD4253A Flex Gecko Radio Board plugs into the Wireless Starter Kit Mainboard provided with the Flex Gecko Starter Kit to get access to display, buttons and additional Operation frequency: 2.4 GHz + 915 MHz features from Expansion Boards. With the supporting Simplicity Studio suite of tools, de- Transmit power: 19 dBm velopers can take advantage of graphical wireless application development and visual Integrated PCB antenna, UFL connector energy profiling and optimization. The board also serves as an RF reference design for (optional). applications targeting 2.4 GHz and 915 MHz Dual Band wireless operation with 19 dBm Touch Slider output power. Crystals for LFXO and HFXO: 32.768 kHz and 38.4 MHz. This document contains brief introduction and description of the BRD4253A Radio Board features focusing on the RF sections and performance. silabs.com Smart. Connected. Energy-friendly. Rev. 1.00BRD4253A Reference Manual Introduction 1. Introduction The EFR32 Flex Gecko Radio Boards provide a development platform (together with the Wireless Starter Kit Mainboard) for the Silicon Labs EFR32 Flex Gecko Wireless System on Chips and serve as reference designs for the matching networks of the RF interfaces. The BRD4253A Radio Board supports dual-band operation with its integrated sub-GHz ISM band and 2.4 GHz band transceivers. The sub-GHz section is designed to the operate in the band with an external whip antenna, the 2.4 GHz section is designed to operate at the 2400-2483.5 MHz band with the on-board printed antenna. The matching networks are optimized to 19 dBm output power. To develop and/or evaluate the EFR32 Flex Gecko the BRD4253A Radio Board can be connected to the Wireless Starter Kit Mainboard to get access to display, buttons and additional features from Expansion Boards and also to evaluate the performance of the RF interfa- ces. silabs.com Smart. Connected. Energy-friendly. Rev. 1.00 1