Designed to run on 3.3V to 4.2V , making it compatible with standard lithium-polymer batteries. Common Applications User’s Manual - FCC Report
Now, I need to gather more information on Beken and Cortex-M33. Let's search for "Beken Bluetooth module PCB design". 1: "bl3221v3.rar" might contain PCB data. Let's open it. shows that Beken module PCB data is available in PADS format. The user's file might be similar. Bk-m33-bt-v2.pcb
: Universal Asynchronous Receiver-Transmitter (UART) lines for firmware flashing and AT command configuration. Layout Strategy for RF and Noise Mitigation Designed to run on 3
Integrating the board into a project requires minimal soldering skill. Follow these general steps: Bk-m33-bt-v2.pcb