We plan to interface an EC200U LTE module with an FC20 Wi-Fi/Bluetooth module for Wi-Fi connectivity.
Please confirm if the EC200U variant supports FC20 integration directly through SDIO.
Key points for clarification:
Interface:
FC20 uses SDIO 3.0 (1.8 V I/O) for Wi-Fi and UART/PCM for Bluetooth.
EC200U has SDIO/SD card interfaces — we need confirmation whether it can act as SDIO host for Wi-Fi modules (not just SD card).
Voltage Domain Compatibility:
Both modules use 1.8 V I/O, so electrical levels should be compatible — please confirm.
Control Signals:
FC20 requires WLAN_EN and WAKE_ON_WIRELESS pins — can these be controlled via EC200U GPIOs?
Software/Driver Support:
Is the EC200U firmware (QuecOpen or Linux SDK) equipped with drivers/support for FC20 Wi-Fi over SDIO?
Recommended Connection:
SDIO_CMD / CLK / D0–D3 connected between EC200U and FC20.
Power 3.3 V to FC20 VDD_3V3 and 1.8 V to VIO.
Appropriate antenna connection and enable sequencing per design guide.
Variants:
Please confirm which EC200U variants (e.g., EC200U-CN, EC200U-EU, EC200U-EA) officially support FC20 as companion Wi-Fi module.