← Can I use just TXD, RXD and GND lines for communications with a host MCU?
Can I download new firmware to the module?
Yes. You can perform a download using our Firmware Programmer Tool for firmware upgrade purposes.
– For USB approach, application board need to provide for access to USB signals and VBAT.
– For UART approach, application board need to provide for access to UART_TX UART_RX, 1V8 and VBAT.