STM32 Smart V2.0
STM32F103C8T6
Board
| Name | STM32 Smart V2.0 |
| Part | STM32_Smart |
| Brand | Unknown |
| Origin | China |
Microcontroller
| Part | STM32F103C8T6 |
| Manufacturer | ST-Microelectronics |
| Core | Arm Cortex-M3 |
| Max. Clock Speed | 72MHz |
| Package | LQFP 48 pins |
Internal memories
| FLASH | 64KiB |
| SRAM | 20KiB |
Oscillators
| HSI | 8MHz |
| LSI | 40kHz |
| HSE | 8MHz |
| LSE | 32.768kHz |
Power
| Sources | Any +3.3V pin (+3.3V) Any +5V pin (+5V) USB connector (+5V) |
| VDDA pin | Yes |
| VSSA pin | No |
| VREF- pin | No |
| VREF+ pin | No |
| Backup battery | Pin |
Regulator
| Manufacturer | Advanced Monolithic Systems Inc. |
| Part | AMS1117 (AMS1117) |
| Package | SOT223 3 pins |
| Input | +4.6V to +15V |
| Output | +3.3V @ 1A |
| Datasheet | AMS1117.pdf |
PCB
| Color | Black |
| Size (w x l) | 42mm x 54mm |
| Mounting | None |
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 | RST |
| Reference | S1 |
| Type | Button |
| Connected to | NRST |
| Mode | Active low |
User button
| Name | - |
| Reference | S2 |
| Type | Button |
| Connected to | PA0 |
| Mode | Active low |
BOOT0 jumper
| Name | - |
| Reference | - |
| Type | 2-way jumper |
| Connected to | BOOT0 |
| Mode | N.A. |
Power LED
| Name | - |
| Reference | D1 |
| Type | LED |
| Connected to | +5V rail |
| Mode | N.A. |
User LED
| Name | - |
| Reference | D2 |
| 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 | GND | - | Ground plane |
| 2 | BT0 | - | BOOT0 |
| 3 | 3V3 | - | +3.3V rail |
| 4 | PB9 | - | PB9 |
| 5 | PB8 | - | PB8 |
| 6 | PB7 | - | PB7 |
| 7 | PB6 | - | PB6 |
| 8 | PB5 | - | PB5 |
| 9 | PB4 | - | PB4 |
| 10 | PB3 | - | PB3 |
| 11 | PA15 | - | PA15 |
| 12 | PA12 | - | PA12 |
| 13 | PA11 | - | PA11 |
| 14 | PA10 | - | PA10 |
| 15 | PA9 | - | PA9 |
| 16 | PA8 | - | PA8 |
| 17 | PB15 | - | PB15 |
| 18 | PB14 | - | PB14 |
| 19 | PB13 | - | PB13 |
| 20 | PB12 | - | PB12 |
Header 2 properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 20x1, male) |
Header 2 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 3V3 | - | +3.3V rail |
| 2 | GND | - | Ground plane |
| 3 | VBAT | - | VBAT |
| 4 | PC13 | - | PC13 |
| 5 | PC14 | - | PC14 |
| 6 | PC15 | - | PC15 |
| 7 | VDDA | - | VDDA |
| 8 | PA0 | - | PA0 |
| 9 | PA1 | - | PA1 |
| 10 | PA2 | - | PA2 |
| 11 | PA3 | - | PA3 |
| 12 | PA4 | - | PA4 |
| 13 | PA5 | - | PA5 |
| 14 | PA6 | - | PA6 |
| 15 | PA7 | - | PA7 |
| 16 | PB0 | - | PB0 |
| 17 | PB1 | - | PB1 |
| 18 | PB2 | - | PB2 |
| 19 | PB10 | - | PB10 |
| 20 | PB11 | - | PB11 |
USB connector properties
| Name | Unknown |
| Reference | None |
| Type | USB Mini |
USB connector pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | VCC | +5V rail |
| 2 | - | D- | PA11 |
| 3 | - | D+ | PA12 |
| 4 | - | ID | N.C. |
| 5 | - | GND | Ground plane |
JTAG header properties
| Name | Unknown |
| Reference | None |
| Type | IDC (2.54mm, 10x2, male) |
JTAG header pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | VCC | +3.3V rail |
| 2 | - | VCC | +3.3V rail |
| 3 | - | TRST | PB4 |
| 4 | - | GND | Ground plane |
| 5 | - | TDI | PA15 |
| 6 | - | GND | Ground plane |
| 7 | - | TMS / SWDIO | PA13 |
| 8 | - | GND | Ground plane |
| 9 | - | TCLK / SWCLK | PA14 |
| 10 | - | GND | Ground plane |
| 11 | - | RTCK | N.C. |
| 12 | - | GND | Ground plane |
| 13 | - | TDO / SWO | PB3 |
| 14 | - | GND | Ground plane |
| 15 | - | RESET | NRST |
| 16 | - | GND | Ground plane |
| 17 | - | N.C. | N.C. |
| 18 | - | GND | Ground plane |
| 19 | - | N.C. | +5V rail |
| 20 | - | GND | Ground plane |
OLED header properties
| Name | OLED |
| Reference | None |
| Type | Pin header (2.54mm, 8x1, female) |
OLED header pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | - | +3.3V rail |
| 2 | - | - | Ground plane |
| 3 | - | - | PB15 |
| 4 | - | - | PB13 |
| 5 | - | - | PB12 |
| 6 | - | - | NRST |
| 7 | - | - | PB1 |
| 8 | - | - | N.C. |
Power header properties footprint
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 3x2, male) |
Power header pins footprint
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 5V | - | +5V rail |
| 2 | 5V | - | +5V rail |
| 3 | 3V3 | - | +3.3V rail |
| 4 | 3V3 | - | +3.3V rail |
| 5 | GND | - | Ground plane |
| 6 | GND | - | Ground plane |
Devices
AT24C04 properties
| Name | Unknown |
| Reference | U4 |
| Manufacturer | Microchip Technology Inc. |
| Part | AT24C04 |
| Marking | AT24C04N |
| Datasheet | AT24C01-02-04-08-16.pdf |
| Package | SOIC 8 pins |
| Description | 512B I2C EEPROM |
AT24C04 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | A0 | Ground plane |
| 2 | - | A1 | Ground plane |
| 3 | - | A2 | Ground plane |
| 4 | - | GND | Ground plane |
| 5 | - | SDA | PB7 |
| 6 | - | SCL | PB6 |
| 7 | - | WP | Ground plane |
| 8 | - | VCC | +3.3V rail |