openSTM32F4_LQFP64

1. Overview

Everything about this board: schematic, PCB gerber and BOM are free to distribute under open-source license for users.

The STM32F4 series chip inside openSTM32 board is based on ARM Cortex-M4 with floating point unit (FPU).

2. Specifications

Items	Specifications
Power supply	5V micro USB 5~36V Jack DC
Microcontroller	STM32F405RGT6 / 32-bit ARM Cortex-M4 with FPU(168MHz, 225DMIPS)
Sensors	3 axis gyroscope, 3 axis accelerometer, 3 axis magnetometer (MPU9250)
Programmer	JTAG/SWD connector Serial (UART3)
Communicaton Ports	UART x 3 I2C x 1 SPI x 1
Multimedia	I2S x 1
Analog input	ADC channel x 5
Analog output	DAC channel x 1
PWM	Timer PWM x 4
Leds and buttons	D7 and D8: USB communication D6: 3V3 power on D1: USER LED status SW2: Reset button SW1: USER button
Digital I/O	10 pins
Output power source	5V max 3A (TPS5430 step-down converter) 3V3 max 1A (AMS1117 linear regulator)
Dimensions	68 x 64 mm

NOTE:

This board auto select power supply when both USB and jackDC are powered.

3. Layout / Pin map

4. Hardware design

Schematic

Dimension