WeAct Black Pill V1.2
STM32F401CCU6
Board
| Name | WeAct Black Pill V1.2 |
| Part | Unknown |
| Brand | WeAct Studio |
| 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 | No |
| VREF+ pin | No |
| Backup battery | Pin |
Regulator
| Manufacturer | Diodes Incorporated |
| Part | AP7343 (6T) |
| Package | X2-DFN1010-4 4 pins |
| Input | +3.52V to +5.25V |
| Output | +3.3V @ 300mA |
| Datasheet | AP7343.pdf |
PCB
| Color | Black |
| Size (w x l) | 20.78mm x 52.81mm |
| 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
Inputs
Connectors
Devices
Inputs & outputs
Reset button
| Name | NRST |
| Reference | - |
| Type | Button |
| Connected to | NRST |
| Mode | Active low |
BOOT0 button
| Name | BOOT0 |
| Reference | - |
| Type | Button |
| Connected to | BOOT0 |
| Mode | Active high |
Power LED
| Name | PWR |
| Reference | - |
| Type | LED |
| Connected to | +3.3V rail |
| Mode | N.A. |
User LED
| Name | PC13 |
| Reference | - |
| Type | LED |
| Connected to | PC13 |
| Mode | Sink |
Connectors & headers
Header 1 properties
| Name | Unknown |
| Reference | None |
| Type | pin header (2.54mm, 20x1, male) |
Header 1 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 5V | - | +5V rail |
| 2 | G | - | Ground plane |
| 3 | 3.3 | - | +3.3V rail |
| 4 | B10 | - | PB10 |
| 5 | B2 | - | PB2 |
| 6 | B1 | - | PB1 |
| 7 | B0 | - | PB0 |
| 8 | A7 | - | PA7 |
| 9 | A6 | - | PA6 |
| 10 | A5 | - | PA5 |
| 11 | A4 | - | PA4 |
| 12 | A3 | - | PA3 |
| 13 | A2 | - | PA2 |
| 14 | A1 | - | PA1 |
| 15 | A0 | - | PA0 |
| 16 | R | - | NRST |
| 17 | C15 | - | PC15 |
| 18 | C14 | - | PC14 |
| 19 | C13 | - | PC13 |
| 20 | VB | - | VBAT |
Header 2 properties
| Name | Unknown |
| Reference | None |
| Type | pin header (2.54mm, 20x1, male) |
Header 2 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | B12 | - | PB12 |
| 2 | B13 | - | PB13 |
| 3 | B14 | - | PB14 |
| 4 | B15 | - | PB15 |
| 5 | A8 | - | PA8 |
| 6 | A9 | - | PA9 |
| 7 | A10 | - | PA10 |
| 8 | A11 | - | PA11 |
| 9 | A12 | - | PA12 |
| 10 | A15 | - | PA15 |
| 11 | B3 | - | PB3 |
| 12 | B4 | - | PB4 |
| 13 | B5 | - | PB5 |
| 14 | B6 | - | PB6 |
| 15 | B7 | - | PB7 |
| 16 | B8 | - | PB8 |
| 17 | B9 | - | PB9 |
| 18 | 5V | - | +5V rail |
| 19 | G | - | Ground plane |
| 20 | 3.3 | - | +3.3V rail |
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 (R8) |
| A5 | - | CC1 | Ground plane via 5.1kΩ (R8) |
| B7 | - | D- | PA11 via 10Ω (R9) |
| A6 | - | D+ | PA12 via 10Ω (R7) |
| A7 | - | D- | PA11 via 10Ω (R9) |
| B6 | - | D+ | PA12 via 10Ω (R7) |
| A8 | - | SBU1 | Ground plane via 5.1kΩ (R8) |
| B5 | - | CC2 | Ground plane via 5.1kΩ (R8) |
| B4/A9 | - | VBUS | +5V rail |
| B1/A12 | - | GND | Ground plane |
SWD header properties
| Name | SW |
| 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 |
Devices
Generic EEPROM properties footprint
| Name | Unknown |
| Reference | U3 |
| Manufacturer | Unknown |
| Part | Generic EEPROM |
| Marking | Unknown |
| Datasheet | Unavailable |
| Package | SOP 8 pins |
| Description | Generic I2C EEPROM |
Generic EEPROM pins footprint
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | /CS | PA4 |
| 2 | - | DO | PA6 |
| 3 | - | /WP | +3.3V rail |
| 4 | - | GND | Ground plane |
| 5 | - | DI | PA7 |
| 6 | - | CLK | PA5 |
| 7 | - | /HOLD | +3.3V rail |
| 8 | - | VCC | +3.3V rail |