STM32F401 Green Pill Microcontroller Board Products

Created: 15Sep2024 23:20:39 UTC 2024-09-15T23:20:39Z
Updated: 17Sep2024 07:54:59 UTC 2024-09-17T07:54:59Z

Description

The STM32F401 Green Pill microcontroller development board breaks out the STM32F401 series MCUMicrocontroller Unit on a board about the same size as the Nano or Pico. The STM32F401 series of MCUs come with a 32-bit 84MHz ARM Cortex-M4 and have different amounts of Flash and SRAMStatic Random Access Memory memory depending on the chip version.

The STM32F401 Green Pill board includes a USB-C connector for power and programming, reset button, 3-Position DIP Switch for boot mode and 1x user switch, LEDs, SWDSerial Wire Debug pins, and the option to connect a battery to back up the RTCReal-Time Clock.

Processor

32-bit 84MHz Cortex-M4

Memory

Flash:
- 128KB STM32F401xB
- 256KB STM32F401xC
- 384KB STM32F401xD
- 512KB STM32F401xE
SRAMStatic Random Access Memory:
- 64KB STM32F401xB and STM32F401xC
- 96KB STM32F401xD and STM32F401xE
OTPOne-Time Programmable (OTP) memory is a type of non-volatile memory that allows data to be written only once. Once programmed, the memory retains its value even after power loss.:
- 512 bytes for STM32F401xD and STM32F401xE

I/OInput/Output

1x Micro-C USB connector (USB 2.0 Full speed)
34x Digital I/OInput/Output with 25x PWMPulse-Width Modulation (3.3V Logic)
10x Analog Inputs 12-bit ADCAnalog-to-Digital Converter (ADC, A/D, or A-to-D) (0V to 3.3V range)
Communication Interfaces (3.3V Logic): 3x UARTUniversal Asynchronous Receiver-Transmitter, 2x I2CInter-Integrated Circuit. Also referred to as IIC or I²C. (SMBusSystem Management Bus/PMBusPower Management Bus), 2x SPISerial Peripheral Interface, and 1x CANController Area Network (CAN) is a high-integrity serial communication bus designed for harsh environments such as industrial and automotive applications..
4-Pins for SWDSerial Wire Debug if you want to reprogram the chip directly or attach a ST-Link debugger.

User Interface

1x Reset Button (labeled NRST)
1x 3-Position DIP Switch (labeled BOOT1 and B2) for entering different boot modes and one user switch
1x Power Indicator LED
1x User LED (labeled D1)

Power

The board can be powered with 5V using the USB-C connector. There are also a few power related pins.

5V output pin is connected to the USB power line. The 5V pin can be used as an alternative power source, but be cautious not to exceed 5.5V and there is no protection against powering the board simultaneously through USB and an external power supply.
3.3 output pin is the 3.3V regulated output voltage from the onboard regulator. You can also power the board by supplying 3.3V to this pin.
G pin is the common/ground/0V reference.
VB input pin is connected to the MCU VBAT pin to supply power for the RTCReal-Time Clock and backup registers from an external battery in the range of 1.8V to 3.6V when power to the board is not present.

Board Size