WaveShare Core746I board
STM32F746IGT6
Board
| Name | WaveShare Core746I board |
| Part | Core7XXI |
| Brand | WaveShare |
| Origin | China |
Microcontroller
| Part | STM32F746IGT6 |
| Manufacturer | ST-Microelectronics |
| Core | Arm Cortex-M7 |
| Max. Clock Speed | 216MHz |
| Package | LQFP 176 pins |
Internal memories
| FLASH | 1024KiB |
| SRAM | 320KiB |
| Backup SRAM | 4KiB |
| ITCM RAM | 16KiB |
Oscillators
| HSI | 16MHz |
| LSI | 32kHz |
| HSE | 8MHz |
| LSE | 32.768kHz |
Power
| Sources | Any +3.3V pin (+3.3V) 5Vin pin (+5V) USB connector (+5V) |
| VDDA pin | No |
| VSSA pin | No |
| VREF- pin | No |
| VREF+ pin | Yes |
| 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 | Blue |
| Size (w x l) | 57.5mm x 83mm |
| 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
Connectors
Devices
Inputs & outputs
Reset button
| Name | RESET |
| Reference | - |
| Type | Button |
| Connected to | NRST |
| Mode | Active low |
BOOT0 switch
| Name | BOOT CONFIG |
| Reference | - |
| Type | Switch |
| Connected to | BOOT0 |
| Mode | N.A. |
+5V source selection switch
| Name | - |
| Reference | - |
| Type | Switch |
| Connected to | +5V rail |
| Mode | N.A. |
- Info: Selects the +5V power source. Can be set to USB, 5Vin pin, or none.
Vref+ jumper
| Name | POWER JMP |
| Reference | - |
| Type | 1-way jumper |
| Connected to | VREF+ |
| Mode | N.A. |
Vbat jumper
| Name | POWER JMP |
| Reference | - |
| Type | 1-way jumper |
| Connected to | VBAT |
| Mode | N.A. |
USB OTG FLG jumper
| Name | OTG JMP |
| Reference | - |
| Type | 1-way jumper |
| Connected to | PE3 |
| Mode | N.A. |
USB OTG PWR OUT jumper
| Name | OTG JMP |
| Reference | - |
| Type | 1-way jumper |
| Connected to | PE2 |
| Mode | N.A. |
USB OTG VBUS jumper
| Name | OTG JMP |
| Reference | - |
| Type | 1-way jumper |
| Connected to | PA9 |
| Mode | N.A. |
Power LED
| Name | PWR LED |
| Reference | - |
| Type | LED |
| Connected to | +3.3V rail |
| Mode | N.A. |
VBUS LED
| Name | VBUS LED |
| Reference | - |
| Type | LED |
| Connected to | +5V rail |
| Mode | N.A. |
Connectors & headers
Header 1 properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2mm, 40x2, male) |
Header 1 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | GND | - | Ground plane |
| 2 | 5Vin | - | +5V source selection switch |
| 3 | PE2 | - | PE2 |
| 4 | PE3 | - | PE3 |
| 5 | PE5 | - | PE5 |
| 6 | PE4 | - | PE4 |
| 7 | PE6 | - | PE6 |
| 8 | VBAT | - | VBAT |
| 9 | PI8 | - | PI8 |
| 10 | PC13 | - | PC13 |
| 11 | PC14 | - | PC14 |
| 12 | PC15 | - | PC15 |
| 13 | PI9 | - | PI9 |
| 14 | PI10 | - | PI10 |
| 15 | PI11 | - | PI11 |
| 16 | PF0 | - | PF0 |
| 17 | PF1 | - | PF1 |
| 18 | PF2 | - | PF2 |
| 19 | PF3 | - | PF3 |
| 20 | PF4 | - | PF4 |
| 21 | PF5 | - | PF5 |
| 22 | PF6 | - | PF6 |
| 23 | PF7 | - | PF7 |
| 24 | PF8 | - | PF8 |
| 25 | PF9 | - | PF9 |
| 26 | PF10 | - | PF10 |
| 27 | PH0 | - | PH0 |
| 28 | PH1 | - | PH1 |
| 29 | RST | - | RST |
| 30 | PC0 | - | PC0 |
| 31 | PC1 | - | PC1 |
| 32 | PC2 | - | PC2 |
| 33 | PC3 | - | PC3 |
| 34 | VREF+ | - | VREF+ |
| 35 | PA1 | - | PA1 |
| 36 | PA0 | - | PA0 |
| 37 | PH2 | - | PH2 |
| 38 | PA2 | - | PA2 |
| 39 | 3.3V | - | +3.3V rail |
| 40 | PH3 | - | PH3 |
| 41 | 3.3V | - | +3.3V rail |
| 42 | GND | - | Ground plane |
| 43 | PH4 | - | PH4 |
| 44 | GND | - | Ground plane |
| 45 | PA3 | - | PA3 |
| 46 | PH5 | - | PH5 |
| 47 | PA5 | - | PA5 |
| 48 | PA4 | - | PA4 |
| 49 | PA7 | - | PA7 |
| 50 | PA6 | - | PA6 |
| 51 | PC5 | - | PC5 |
| 52 | PC4 | - | PC4 |
| 53 | PB1 | - | PB1 |
| 54 | PB0 | - | PB0 |
| 55 | PF11 | - | PF11 |
| 56 | PB2 | - | PB2 |
| 57 | PF13 | - | PF13 |
| 58 | PF12 | - | PF12 |
| 59 | PF15 | - | PF15 |
| 60 | PF14 | - | PF14 |
| 61 | PG1 | - | PG1 |
| 62 | PG0 | - | PG0 |
| 63 | PE8 | - | PE8 |
| 64 | PE7 | - | PE7 |
| 65 | PE10 | - | PE10 |
| 66 | PE9 | - | PE9 |
| 67 | PE12 | - | PE12 |
| 68 | PE11 | - | PE11 |
| 69 | PE14 | - | PE14 |
| 70 | PE13 | - | PE13 |
| 71 | PB10 | - | PB10 |
| 72 | PE15 | - | PE15 |
| 73 | PH6 | - | PH6 |
| 74 | PB11 | - | PB11 |
| 75 | PH8 | - | PH8 |
| 76 | PH7 | - | PH7 |
| 77 | PH10 | - | PH10 |
| 78 | PH9 | - | PH9 |
| 79 | 3.3V | - | +3.3V rail |
| 80 | PH11 | - | PH11S |
Header 2 properties
| Name | Unknown |
| Reference | None |
| Type | Pin header (2mm, 40x2, male) |
Header 2 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | 3.3V | - | +3.3V rail |
| 2 | GND | - | Ground plane |
| 3 | PH12 | - | PH12 |
| 4 | PB12 | - | PB12 |
| 5 | PB13 | - | PB13 |
| 6 | PB14 | - | PB14 |
| 7 | PB15 | - | PB15 |
| 8 | PD8 | - | PD8 |
| 9 | PD9 | - | PD9 |
| 10 | PD10 | - | PD10 |
| 11 | PD11 | - | PD11 |
| 12 | PD12 | - | PD12 |
| 13 | PD13 | - | PD13 |
| 14 | PD14 | - | PD14 |
| 15 | PD15 | - | PD15 |
| 16 | PG2 | - | PG2 |
| 17 | PG3 | - | PG3 |
| 18 | PG4 | - | PG4 |
| 19 | PG5 | - | PG5 |
| 20 | PG6 | - | PG6 |
| 21 | PG7 | - | PG7 |
| 22 | PG8 | - | PG8 |
| 23 | PC6 | - | PC6 |
| 24 | PC7 | - | PC7 |
| 25 | PC8 | - | PC8 |
| 26 | PC9 | - | PC9 |
| 27 | PA8 | - | PA8 |
| 28 | PA9 | - | PA9 |
| 29 | PA10 | - | PA10 |
| 30 | PA11 | - | PA11 |
| 31 | PA12 | - | PA12 |
| 32 | PA13 | - | PA13 |
| 33 | PA14 | - | PA14 |
| 34 | PH13 | - | PH13 |
| 35 | PI0 | - | PI0 |
| 36 | PH15 | - | PH15 |
| 37 | 3.3V | - | +3.3V rail |
| 38 | PI1 | - | PI1 |
| 39 | 3.3V | - | +3.3V rail |
| 40 | GND | - | Ground plane |
| 41 | PI2 | - | PI2 |
| 42 | GND | - | Ground plane |
| 43 | PI3 | - | PI3 |
| 44 | PA14 | - | PA14 |
| 45 | PA15 | - | PA15 |
| 46 | PC10 | - | PC10 |
| 47 | PC11 | - | PC11 |
| 48 | PC12 | - | PC12 |
| 49 | PD0 | - | PD0 |
| 50 | PD1 | - | PD1 |
| 51 | PD2 | - | PD2 |
| 52 | PD3 | - | PD3 |
| 53 | PD4 | - | PD4 |
| 54 | PD5 | - | PD5 |
| 55 | PD6 | - | PD6 |
| 56 | PD7 | - | PD7 |
| 57 | PG9 | - | PG9 |
| 58 | PG10 | - | PG10 |
| 59 | PG11 | - | PG11 |
| 60 | PG12 | - | PG12 |
| 61 | PG13 | - | PG13 |
| 62 | PG14 | - | PG14 |
| 63 | PG15 | - | PG15 |
| 64 | PB3 | - | PB3 |
| 65 | PB4 | - | PB4 |
| 66 | PB5 | - | PB5 |
| 67 | PB6 | - | PB6 |
| 68 | PB7 | - | PB7 |
| 69 | BOOT0 | - | BOOT0 |
| 70 | PB8 | - | PB8 |
| 71 | PB9 | - | PB9 |
| 72 | PE0 | - | PE0 |
| 73 | PE1 | - | PE1 |
| 74 | PDR | - | PDR |
| 75 | PI4 | - | PI4 |
| 76 | PI5 | - | PI5 |
| 77 | PI6 | - | PI6 |
| 78 | PI7 | - | PI7 |
| 79 | GND | - | Ground plane |
| 80 | 5VOUT | - | +5V rail |
USB connector properties
| Name | Unknown |
| Reference | None |
| Type | USB Micro |
USB connector pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | VCC | +5V source selection switch |
| 2 | - | D- | PA11 via 22Ω resistor |
| 3 | - | D+ | PA12 via 22Ω resistor |
| 4 | - | ID | PA10 via 330Ω resistor |
| 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. | N.C. |
| 20 | - | GND | Ground plane |
Devices
MIC2075 properties
| Name | Unknown |
| Reference | Unknown |
| Manufacturer | Microchip Technology Inc. |
| Part | MIC2075 |
| Marking | 2075-28M |
| Datasheet | MIC2075.pdf |
| Package | SOIC 8 pins |
| Description | USB High-Side 500mA Current Limiting Power Switch |
MIC2075 pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | EN | PWR OUT jumper, pulled up by 10kΩ resistor |
| 2 | - | FLG | FLG jumper, pulled up by 10kΩ resistor |
| 3 | - | GND | Ground plane |
| 4 | - | NC | N.C. |
| 5 | - | NC | N.C. |
| 6 | - | OUT | USB 5V pin |
| 7 | - | IN | +5V rail |
| 8 | - | OUT | USB 5V pin |
IS42S16400J properties
| Name | Unknown |
| Reference | Unknown |
| Manufacturer | Integrated Silicon Solution, Inc. |
| Part | IS42S16400J |
| Marking | IS42S16400J-71L |
| Datasheet | IS42S16400J.pdf |
| Package | TSOP - II 54 pins |
| Description | 8MiB SDRAM |
IS42S16400J pins
| # | Name | Function | Connected to |
|---|---|---|---|
| 1 | - | VDD | +3.3V rail |
| 2 | - | DQ0 | PD14 |
| 3 | - | VDDQ | +3.3V rail |
| 4 | - | DQ1 | PD15 |
| 5 | - | DQ2 | PD0 |
| 6 | - | GNDQ | Ground plane |
| 7 | - | DQ3 | PD1 |
| 8 | - | DQ4 | PE7 |
| 9 | - | VDDQ | +3.3V rail |
| 10 | - | DQ5 | PE8 |
| 11 | - | DQ6 | PE9 |
| 12 | - | GNDQ | Ground plane |
| 13 | - | DQ7 | PE10 |
| 14 | - | VDD | +3.3V rail |
| 15 | - | LDQM | PE0 |
| 16 | - | WE | PH5 |
| 17 | - | CAS | PG15 |
| 18 | - | RAS | PF11 |
| 19 | - | CS | PH6 |
| 20 | - | BA0 | PG4 |
| 21 | - | BA1 | PG5 |
| 22 | - | A10 | PG0 |
| 23 | - | A0 | PF0 |
| 24 | - | A1 | PF1 |
| 25 | - | A2 | PF2 |
| 26 | - | A3 | PF3 |
| 27 | - | VDD | +3.3V rail |
| 28 | - | GND | Ground plane |
| 29 | - | A4 | PF4 |
| 30 | - | A5 | PF5 |
| 31 | - | A6 | PF12 |
| 32 | - | A7 | PF13 |
| 33 | - | A8 | PF14 |
| 34 | - | A9 | PF15 |
| 35 | - | A11 | PG1 |
| 36 | - | NC | N.C. |
| 37 | - | CKE | PH7 |
| 38 | - | CLK | PG8 |
| 39 | - | UDQM | PE1 |
| 40 | - | NC | N.C. |
| 41 | - | GND | Ground plane |
| 42 | - | DQ8 | PE11 |
| 43 | - | VDDQ | +3.3V rail |
| 44 | - | DQ9 | PE12 |
| 45 | - | DQ10 | PE13 |
| 46 | - | GNDQ | Ground plane |
| 47 | - | DQ11 | PE14 |
| 48 | - | DQ12 | PE15 |
| 49 | - | VDDQ | +3.3V rail |
| 50 | - | DQ13 | PD8 |
| 51 | - | DQ14 | PD9 |
| 52 | - | GNDQ | Ground plane |
| 53 | - | DQ15 | PD10 |
| 54 | - | GND | Ground plane |