STM32 Mini F401
STM32F401CCU6
Board
| Name | STM32 Mini F401 |
| Part | STM32F401CxUx |
| Brand | Unknown |
| Origin | China |
Microcontroller
| Part | STM32F401CCU6 |
| Manufacturer | ST-Microelectronics |
| Core | Arm Cortex-M4 |
| Max. Clock Speed | 84MHz |
| Package | UFQFPN 48 pins |
Internal memories
| FLASH | 256KiB |
| SRAM | 64KiB |
Oscillators
| HSI | 16MHz |
| LSI | 32kHz |
| HSE | 25MHz |
| LSE | 32.768kHz |
Power
| Sources | Any +3.3V pin (+3.3V) Any +5V pin (+5V) USB connector (+5V) |
| VDDA pin | No |
| VSSA pin | No |
| VREF- pin | Yes |
| VREF+ pin | Yes |
| Backup battery | Pin |
Regulator
| Manufacturer | Torex Semiconductor LTD. |
| Part | XC6204 (4A2D / 4B2X) |
| Package | SOT89-3 3 pins |
| Input | +3.6V to +10V |
| Output | +3.3V @ 300mA |
| Datasheet | XC6204-XC6205.pdf |
PCB
| Color | Green |
| Size (w x l) | 23mm x 53mm |
| Mounting | Breadboard |
Remarks
- Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.
Pictures
Connectors
Devices
None
Inputs & outputs
Reset button
| Name | NRST |
| Reference | - |
| Type | Button |
| Connected to | NRST |
| Mode | Active low |
BOOT0 DIP switch
| Name | BOOT0 |
| Reference | - |
| Type | Switch |
| Connected to | BOOT0 |
| Mode | N.A. |
BOOT1 DIP switch
| Name | - |
| Reference | - |
| Type | Switch |
| Connected to | PB2 |
| Mode | N.A. |
BOOT1 enable DIP switch
| Name | - |
| Reference | - |
| Type | Switch |
| Connected to | +3.3V |
| Mode | N.A. |
Power LED
| Name | PWR |
| Reference | - |
| Type | LED |
| Connected to | +3.3V rail |
| Mode | N.A. |
User LED
| Name | - |
| Reference | D1 |
| Type | LED |
| Connected to | PC13 |
| Mode | Sink |
Connectors & headers
Header 1 properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 22x1, male) |
Header 1 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 5V | - | +5V rail |
| 2 | GND | - | Ground plane |
| 3 | 3.3 | - | +3.3V rail |
| 4 | VB | - | VBAT |
| 5 | C13 | - | PC13 |
| 6 | C14 | - | PC14 |
| 7 | C15 | - | PC15 |
| 8 | B15 | - | PB15 |
| 9 | B14 | - | PB14 |
| 10 | B13 | - | PB13 |
| 11 | B12 | - | PB12 |
| 12 | B10 | - | PB10 |
| 13 | B9 | - | PB9 |
| 14 | B8 | - | PB8 |
| 15 | B7 | - | PB7 |
| 16 | B6 | - | PB6 |
| 17 | B5 | - | PB5 |
| 18 | B4 | - | PB4 |
| 19 | B3 | - | PB3 |
| 20 | B2 | - | PB2 |
| 21 | B1 | - | PB1 |
| 22 | B0 | - | PB0 |
Header 2 properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 20x1, male) |
Header 2 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | H0 | - | PH0 |
| 2 | H1 | - | PH1 |
| 3 | RST | - | NRST |
| 4 | V- | - | VREF- |
| 5 | V+ | - | VREF+ |
| 6 | A0 | - | PA0 |
| 7 | A1 | - | PA1 |
| 8 | A2 | - | PA2 |
| 9 | A3 | - | PA3 |
| 10 | A4 | - | PA4 |
| 11 | A5 | - | PA5 |
| 12 | A6 | - | PA6 |
| 13 | A7 | - | PA7 |
| 14 | A8 | - | PA8 |
| 15 | A9 | - | PA9 |
| 16 | A10 | - | PA10 |
| 17 | A11 | - | PA11 |
| 18 | A12 | - | PA12 |
| 19 | A13 | - | PA13 |
| 20 | A14 | - | PA14 |
| 21 | A15 | - | PA15 |
| 22 | GND | - | Ground plane |
USB connector properties
| Name | Unknown |
| Reference | None |
| Type | USB C |
USB connector pins
| # | Name | Function | Connected to |
|---|---|---|---|
| A1/B12 | - | GND | Ground plane |
| A4/B9 | - | VBUS | +5V rail |
| B8 | - | SBU2 | Ground plane via 5.1kΩ |
| A5 | - | CC1 | Ground plane via 5.1kΩ |
| B7 | - | D- | PA11 |
| A6 | - | D+ | PA12 |
| A7 | - | D- | PA11 |
| B6 | - | D+ | PA12 |
| A8 | - | SBU1 | Ground plane via 5.1kΩ |
| B5 | - | CC2 | Ground plane via 5.1KΩ |
| B4/A9 | - | VBUS | +5V rail |
| B1/A12 | - | GND | Ground plane |
SWD header properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 4x1, male) |
SWD header pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 3.3V | VCC | +3.3V rail |
| 2 | SWDIO | SWDIO | PA13 |
| 3 | SWCLK | SWCLK | PA14 |
| 4 | GND | GND | Ground plane |