u-blox BMD-340 (nRF52840)

Key data

Category

ICs

Simulation model

Microcontroller with real firmware

Manufacturer part number

BMD-340-A-R

Reference prefix

M

Pins

68

Land pattern

BMD-340_UBLOX_LGA68

Notes

The firmware runs on an emulated CPU core, instruction by instruction. Peripherals that the model implements (GPIO, timers, UART, SPI, I²C, ADC and others, see the description) act on the pins of the circuit, so the analog parts around the chip see the same voltages and timing as on a real board.

• Right-click the part and choose "Open in code editor" to write and compile its code; "Serial monitor" shows its UART output.
• In the inspector you can load a demo firmware or your own ELF / Intel HEX / BIN file instead.
• GPIO pins are real circuit pins: an LED on an output needs a series resistor, an input needs a defined level (pull-up or pull-down).
• The debugger in the code view stops at breakpoints and shows registers, variables and the call stack.

Simulation model

An emulated CPU core runs the firmware binary instruction by instruction. The GPIO pins are pins of the analog circuit: outputs drive through a driver resistance, inputs read the voltage with thresholds.

Device

nrf52840

CPU core

ARM Cortex-M4F

Emulator

ARM Cortex-M emulator

Firmware

Bare-metal C (arm-none-eabi-gcc) or a Zephyr project in the code view, or your own ELF / Intel HEX / BIN file

Flash / RAM for firmware

1 MB / 256 KB

Supply pins

17 / 1

Mapped GPIO pins

48

Pins 68

simulatedreal chip onlyPin functions from the emulator and the datasheet.

PCB