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The module uses the ESP32C3FN4 chip solution.
Minewsemi's MS11SF1 supports the function with Wi-Fi4 and BLE5.0 (Low-energy Bluetooth).
The module has 4 M SPI Flash, 400KB RAM, 384KB ROM and keeps the SPI interface for users to plug in the external Flash chip, which can be expanded up to 16M.
The module will pin out all GPIOs of the chip, with 22 in total. Seven of the GPIOs are recommended for external Flash, not recommended for use as normal IO ports.
The module currently has only PCB antennas.
The module size is: 16.6*13.2*2.2mm.
The operation voltage scope: 3.0-3.6V; ( recommended 3.3V).
Production RF testing, on the other hand, involves connecting the module to a spectrum analyzer using a coaxial cable to measure the conducted power. This is done by contacting the test probes with the ANT pins.
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