Euse Board
STM32F103RCT6
Board
| Name | Euse Board |
| Part | Unknown |
| Brand | Euse |
| Origin | China |
Microcontroller
| Part | STM32F103RCT6 |
| Manufacturer | ST-Microelectronics |
| Core | Arm Cortex-M3 |
| Max. Clock Speed | 72MHz |
| Package | UFQFPN 64 pins |
Internal memories
| FLASH | 256KiB |
| SRAM | 48KiB |
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 | Holder (12.5mm / 12) |
Regulator
| Manufacturer | Holtek Semiconductor Inc. |
| Part | HT7533 (HT7533) |
| Package | SOT89-3 3 pins |
| Input | +3.4V to +24V |
| Output | +3.3V @ 100mA |
| Datasheet | HT75xx.pdf |
PCB
| Color | Black |
| Size (w x l) | 54mm x 68mm |
| Mounting | 4x mounting hole (M2) |
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
Connectors
Devices
None
Inputs & outputs
Reset button
| Name | RESET |
| 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 | BOOT1 |
| Reference | - |
| Type | Switch |
| Connected to | PB2 |
| Mode | N.A. |
User LED enable
| Name | - |
| Reference | LS1 |
| Type | 1-way jumper |
| Connected to | PB10 - User LED (LD1) |
| Mode | N.A. |
USB D+ enable
| Name | - |
| Reference | US1 |
| Type | 1-way jumper |
| Connected to | USB D+ |
| Mode | N.A. |
USB D- enable
| Name | - |
| Reference | US2 |
| Type | 1-way jumper |
| Connected to | USB D- |
| Mode | N.A. |
OSC_32_IN enable
| Name | - |
| Reference | MS1 |
| Type | 1-way jumper |
| Connected to | OSC_32_IN |
| Mode | N.A. |
OSC_32_OUT enable
| Name | - |
| Reference | MS2 |
| Type | 1-way jumper |
| Connected to | OSC_32_OUT |
| Mode | N.A. |
OSC_IN enable
| Name | - |
| Reference | MS3 |
| Type | 1-way jumper |
| Connected to | OSC_IN |
| Mode | N.A. |
OSC_OUT enable
| Name | - |
| Reference | MS4 |
| Type | 1-way jumper |
| Connected to | OSC_OUT |
| Mode | N.A. |
VBAT jumper
| Name | - |
| Reference | J7 |
| Type | 2-way jumper |
| Connected to | VBAT to +3.3V rail or battery |
| Mode | N.A. |
Power LED
| Name | - |
| Reference | PD1 |
| Type | LED |
| Connected to | +5V rail |
| Mode | N.A. |
User LED
| Name | - |
| Reference | LD1 |
| Type | LED |
| Connected to | PB10 |
| Mode | Sink |
Connectors & headers
Header 1 properties
| Name | Unknown |
| Reference | J3 |
| Type | Pin header (2.54mm, 14x2, male) |
Header 1 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | PA6 | - | PA6 |
| 2 | PA7 | - | PA7 |
| 3 | PA5 | - | PA5 |
| 4 | PA4 | - | PA4 |
| 5 | PC14 | - | PC14 |
| 6 | PC15 | - | PC15 |
| 7 | PA15 | - | PA15 |
| 8 | PD2 | - | PD2 |
| 9 | PB7 | - | PB7 |
| 10 | PB6 | - | PB6 |
| 11 | PB3 | - | PB3 |
| 12 | PB4 | - | PB4 |
| 13 | PA0 | - | PA0 |
| 14 | PA1 | - | PA1 |
| 15 | PA2 | - | PA2 |
| 16 | PA3 | - | PA3 |
| 17 | PA13 | - | PA13 |
| 18 | PA14 | - | PA14 |
| 19 | PB0 | - | PB0 |
| 20 | PB5 | - | PB5 |
| 21 | PA11 | - | PA11 |
| 22 | PA12 | - | PA12 |
| 23 | PA9 | - | PA9 |
| 24 | PA10 | - | PA10 |
| 25 | PB1 | - | PB1 |
| 26 | PC13 | - | PC13 |
| 27 | 5V | - | +5V rail |
| 28 | GND | - | Ground plane |
Header 2 properties
| Name | Unknown |
| Reference | J2 |
| Type | Pin header (2.54mm, 14x2, male) |
Header 2 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | PB8 | - | PB8 |
| 2 | PB9 | - | PB9 |
| 3 | PB10 | - | PB10 |
| 4 | PB11 | - | PB11 |
| 5 | PB12 | - | PB12 |
| 6 | PB13 | - | PB13 |
| 7 | PB14 | - | PB14 |
| 8 | PB15 | - | PB15 |
| 9 | PC0 | - | PC0 |
| 10 | PC1 | - | PC1 |
| 11 | PC2 | - | PC2 |
| 12 | PC3 | - | PC3 |
| 13 | PC4 | - | PC4 |
| 14 | PC5 | - | PC5 |
| 15 | PC6 | - | PC6 |
| 16 | PC7 | - | PC7 |
| 17 | PC8 | - | PC8 |
| 18 | PC9 | - | PC9 |
| 19 | PC10 | - | PC10 |
| 20 | PC11 | - | PC11 |
| 21 | PC12 | - | PC12 |
| 22 | PA8 | - | PA8 |
| 23 | PB2 | - | PB2 |
| 24 | PD0 | - | PD0 |
| 25 | PD1 | - | PD1 |
| 26 | NC | - | N.C. |
| 27 | 3V3 | - | +3.3V rail |
| 28 | GND | - | Ground plane |
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 |
SWD header properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 4x1, female) |
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 |
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. | N.C. |
| 20 | - | GND | Ground plane |
Serial header properties footprint
| Name | Unknown |
| Reference | None |
| Type | Pin header (2.54mm, 4x1, male) |
Serial header pins footprint
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 3.3V | - | +3.3V rail |
| 2 | TX | - | PA9 |
| 3 | RX | - | PA10 |
| 4 | GND | - | Ground plane |