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UART device

Quectel BG770A Cellular

The Quectel BG770A Cellular is a UART device in the LabWired part catalog. Its catalog type is bg770a-cellular. It connects to the MCU over UART. The catalog gives a supply range of 3.3–4.3 V. It has 4 pins. A registered peripheral model runs in the engine: the firmware talks to it over the real bus and gets device-accurate responses.

Key facts

CategoryUART devices
Catalog typebg770a-cellular
InterfaceUART
Supply range3.3–4.3 V
Pins4
DatasheetQuectel BG77xA-GL LPWA specification V1.7

What LabWired simulates

What is simulated

Simulated device model

How it was validated

Checked against a capture. Compared against a recorded trace or capture from real hardware, with the record kept in the repository.

Raw bench capture from a physical BG770A-GL EVB (fw BG770AGLAAR01A05). Replayed by core/crates/core/tests/bg770a_validation.rs: 132 byte-exact commands, 13 shape-matched state-varying commands, 9 multi-step sequences (53 steps). Report: core/crates/core/tests/fixtures/quectel_bg770a/oracle_report.md.

Quectel BG770A Cellular pinout

PinElectrical typeFunction
VCC Power input Supply
GND Power input Supply
TX Output UART transmit (TX)
RX Input UART receive (RX)

How to simulate the Quectel BG770A Cellular in LabWired

  1. Open the Playground at app.labwired.com and place an MCU board.
  2. Add the Quectel BG770A Cellular (catalog type bg770a-cellular).
  3. Connect VCC and GND to the supply and ground of the board. Use a supply inside the catalog range of 3.3–4.3 V.
  4. Cross the UART lines: connect TX to the RX pin of the board, and RX to the TX pin of the board.
  5. Run the firmware. It sends and receives bytes on the simulated UART as on hardware.

Related UART devices

All UART devices · All parts

Further reading

Modelled from Quectel BG77xA-GL LPWA specification V1.7.

Wire it up in Playground → See the full validation matrix