• STM32F401RET6 in LQFP64 package
• ARM®32-bit Cortex®-M4 CPU with FPU
• 84 MHz max CPU frequency
• VDD from 1.7 V to 3.6 V
• 512 KB Flash
• 96 KB SRAM
• GPIO (50) with external interrupt capability
• 12-bit ADC with 16 channels
• RTC
• Advanced-control Timer
• General Purpose Timers (7)
• Watchdog Timers (2)
• USART/UART (4)
• I2C (3)
• SPI (3)
• SDIO
• USB 2.0 OTG FS

* Two types of extension resources

• Arduino Uno Revision 3 connectivity
• STMicroelectronics Morpho extension pin headers for full access to all STM32 I/Os

* On-board ST-LINK/V2-1 debugger/programmer with SWD connector

• Selection-mode switch to use the kit as a standalone ST-LINK/V2-1

* Flexible board power supply

• USB VBUS or external source (3.3 V, 5 V, 7 - 12 V)
• Power management access point

* User LED (LD2) * Two push buttons: USER and RESET * USB re-enumeration capability: three different interfaces supported on USB

• Virtual Com port
• Mass storage (USB Disk drive) for drag'n'drop programming
• Debug port

Only the labels written in blue/white or green/white (i.e. PA_4, PB_5, A0, D14, LED1…) must be used in your code. The other labels are given as information (alternate-functions, power pins, …). You can also use these additional labels:

         SERIAL_TX=PA_2  I2C_SCL=PB_8  SPI_MOSI=PA_7  PWM_OUT=PB_3
         SERIAL_RX=PA_3  I2C_SDA=PB_9  SPI_MISO=PA_6
                                       SPI_SCK =PA_5
                                       SPI_CS  =PB_6