最小系统 (Minimal System) Board
STM32F105RCT6
Board
| Name | 最小系统 (Minimal System) Board |
| Part | Unknown |
| Brand | Unknown |
| Origin | China |
Microcontroller
| Part | STM32F105RCT6 |
| Manufacturer | ST-Microelectronics |
| Core | Arm Cortex-M3 |
| Max. Clock Speed | 72MHz |
| Package | UFQFPN 64 pins |
Internal memories
| FLASH | 256KiB |
| SRAM | 64KiB |
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 | No |
| VSSA pin | No |
| VREF- pin | No |
| VREF+ pin | No |
| Backup battery | None |
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 | Green |
| Size (w x l) | 50mm x 50mm |
| Mounting | 4x mounting hole (M3) |
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
Resources
Inputs
Devices
None
Inputs & outputs
Reset button
| Name | 复位 |
| Reference | S1 |
| Type | Button |
| Connected to | NRST |
| Mode | Active low |
BOOT0 jumper
| Name | - |
| Reference | - |
| Type | 1-way jumper |
| Connected to | BOOT0 |
| Mode | Active low |
BOOT1 jumper
| Name | - |
| Reference | - |
| Type | 1-way jumper |
| Connected to | PB2 |
| Mode | Active low |
Power LED
| Name | - |
| Reference | D1 |
| Type | LED |
| Connected to | +3.3V rail |
| Mode | N.A. |
User LED
| Name | - |
| Reference | D2 |
| Type | LED |
| Connected to | PD2 |
| Mode | Sink |
Connectors & headers
Header 1 properties
| Name | Unknown |
| Reference | P5 |
| Type | Pin header (2.54mm, 14x2, male) |
Header 1 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | C12 | - | PC12 |
| 2 | C11 | - | PC11 |
| 3 | C10 | - | PC10 |
| 4 | A15 | - | PA15 |
| 5 | A14 | - | PA14 |
| 6 | A13 | - | PA13 |
| 7 | A12 | - | PA12 |
| 8 | A11 | - | PA11 |
| 9 | A10 | - | PA10 |
| 10 | A9 | - | PA9 |
| 11 | A8 | - | PA8 |
| 12 | C9 | - | PC9 |
| 13 | C8 | - | PC8 |
| 14 | C7 | - | PC7 |
| 15 | C6 | - | PC6 |
| 16 | B15 | - | PB15 |
| 17 | B14 | - | PB14 |
| 18 | B13 | - | PB13 |
| 19 | B12 | - | PB12 |
| 20 | B11 | - | PB11 |
| 21 | B10 | - | PB10 |
| 22 | BT1 | - | PB2 |
| 23 | B1 | - | PB1 |
| 24 | B0 | - | PB0 |
| 25 | GND | - | Ground plane |
| 26 | GND | - | Ground plane |
Header 2 properties
| Name | Unknown |
| Reference | P8 |
| Type | Pin header (2.54mm, 14x2, male) |
Header 2 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | B3 | - | PB3 |
| 2 | B4 | - | PB4 |
| 3 | B5 | - | PB5 |
| 4 | B6 | - | PB6 |
| 5 | B7 | - | PB7 |
| 6 | B8 | - | PB8 |
| 7 | B9 | - | PB9 |
| 8 | C13 | - | PC13 |
| 9 | C0 | - | PC0 |
| 10 | C1 | - | PC1 |
| 11 | C2 | - | PC2 |
| 12 | C3 | - | PC3 |
| 13 | A0 | - | PA0 |
| 14 | A1 | - | PA1 |
| 15 | A2 | - | PA2 |
| 16 | A3 | - | PA3 |
| 17 | A4 | - | PA4 |
| 18 | A5 | - | PA5 |
| 19 | A6 | - | PA6 |
| 20 | A7 | - | PA7 |
| 21 | C4 | - | PC4 |
| 22 | C5 | - | PC5 |
| 23 | D2 | - | PD2 |
| 24 | GND | - | Ground plane |
| 25 | 5V | - | +5V rail |
| 26 | GND | - | Ground plane |
USB connector properties
| Name | Unknown |
| Reference | None |
| Type | USB Micro |
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 |
SWD header properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 4x1, male) |
SWD header pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 3V3 | VCC | +3.3V rail |
| 2 | DIO | SWDIO | PA13 |
| 3 | CLK | SWCLK | PA14 |
| 4 | GND | GND | Ground plane |
Serial Header 1 properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 3x1, male) |
Serial Header 1 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | A9 | - | PA9 |
| 2 | A10 | - | PA10 |
| 3 | GND | - | Ground plane |
Serial Header 2 properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 3x1, male) |
Serial Header 2 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | B10 | - | PB10 |
| 2 | B11 | - | PB11 |
| 3 | GND | - | Ground plane |
Serial Header 3 properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 3x1, male) |
Serial Header 3 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | A2 | - | PA2 |
| 2 | A3 | - | PA3 |
| 3 | GND | - | Ground plane |
+3.3V Power Header properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 4x2, male) |
+3.3V Power Header pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 3V3 | - | +3.3V rail |
| 2 | GND | - | Ground plane |
| 3 | 3V3 | - | +3.3V rail |
| 4 | GND | - | Ground plane |
| 5 | 3V3 | - | +3.3V rail |
| 6 | GND | - | Ground plane |
| 7 | 3V3 | - | +3.3V rail |
| 8 | GND | - | Ground plane |
+5V Power Header properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 4x1, male) |
+5V Power Header pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 5V | - | +5V rail |
| 2 | 5V | - | +5V rail |
| 3 | 5V | - | +5V rail |
| 4 | 5V | - | +5V rail |