Overview

Open407V-C is an STM32 development board designed for the STM32F407VET6 microcontroller, consists of the mother board and the MCU core board Core407V.

The Open407V-C supports further expansion with various optional accessory boards for specific application. The modular and open design makes it the ideal for starting application development with STM32F4 series microcontrollers.

What's on the mother board

1. MCU core board connector: for easily connecting the Core407V
2. ULPI interface: for connecting high-speed USB peripheral (the STM32F407V integrates USB HS controller without any PHY device)
3. FSMC + SPI interface (16-bit FSMC + SPI): for connecting touch screen LCD
4. FSMC interface (8-bit FSMC): easily connects to peripherals such as NandFlash, Ethernet, etc.
5. SPI1/SPI2 + AD/DA interface
   • easily connects to SPI peripherals such as DataFlash (AT45DBxx), SD card, MP3 module, etc.
   • SPI1 features AD/DA alternative function, supports connecting AD/DA module as well
6. SDIO interface: for connecting Micro SD module, features much faster access speed rather than SPI
7. I2S2/I2S3/I2C1: for connecting I2S peripherals, such as Audio module
8. USART2 interface: easily connects to RS232, RS485, USB TO 232, etc.
9. CAN1 interface: communicates with accessory boards which feature the CAN device conveniently
10. CAN2 interface: communicates with accessory boards which feature the CAN device conveniently
11. I2C1/I2C2 interface: easily connects to I2C peripherals such as I/O expander (PCF8574), FRAM (FM24CLxx), etc.
12. DCMI interface: for connecting digital camera
13. UART3 interface: easily connects to RS232, USB TO 232, etc.
14. Ethernet interface: easily connects the MCU to ethernet network by using an additional ethernet module
15. ONE-WIRE interface: easily connects to ONE-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc.
16. 5V DC jack
17. 5V/3.3 V power input/output: usually used as power output, also common-grounding with other user board
18. MCU pins connector: VCC, GND, and all the I/O ports are accessible on expansion connectors for further expansion
19. SD Card Detect jumper
20. LEDs jumper
    • short the jumper to connect to default I/Os used in example code
    • open the jumper to connect to custom I/Os via jumper wires
21. User key/Wake-Up button jumper
    • short the jumper to connect to default I/Os used in example code
    • open the jumper to connect to custom I/Os via jumper wires
22. Joystick jumper
    • short the jumper to connect to default I/Os used in example code
    • open the jumper to connect to custom I/Os via jumper wires
23. LCD backlight adjustment jumper
    • short the jumper to enable LCD backlight adjustment
    • open the jumper to disable and disconnect from the I/O ports
24. LEDs: convenient for indicating I/O status and/or program running state
25. User key: convenient for I/O input and/or interact with running code
26. Wake-Up button: wake up the STM32 MCU from sleep mode, also used as regular user key
27. Joystick: convenient for I/O input (five positions)

What's on the Core407V

1. STM32F407VET6:the high performance STM32 MCU which features:
   • Core: Cortex-M4 32-bit RISC
   • Feature: a full set of single-cycle DSP instructions
   • Operating Frequency: 168MHz, 210 DMIPS/1.25 DMIPS/MHz
   • Operating Voltage: 1.8V-3.6V
   • Package: LQFP100
   • Memories: 512kB Flash, 192+4kB SRAM
   • MCU communication Interfaces:
     • 3 x SPI, 3 x USART, 2 x UART, 2 x I2S, 3 x I2C
     • 1 x FSMC, 1 x SDIO, 2 x CAN
     • 1 x USB 2.0 high-speed/full-speed device/host/OTG controller with dedicated DMA, ULPI and on-chip full-speed PHY
     • 1 x 10/100 Ethernet MAC
     • 1 x 8 to 12-bit parallel camera interface
   • AD & DA converters: 3 x AD (12-bit, 1μs, shares 24 channels); 2 x DA (12-bit)
   • Debugging/Programming: supports JTAG/SWD (serial wire debug) interfaces, supports IAP
2. AMS1117-3.3 (on bottom side): 3.3V voltage regulator
3. MIC2075 (on bottom side): onboard USB power management device
4. Power supply switch, powered from 5Vin or USB connection
5. Boot mode switch, for configuring BOOT0 pin
6. Power indicator
7. Reset button
8. 8M crystal oscillator
9. 32.768K crystal (on bottom side), for internal RTC with calibration
10. JTAG/SWD interface: for debugging/programming
11. USB connector, used for establishing USB communication between PC and the STM32 development board
12. IO expander (including VCC/GND), all the MCU pins are accessible on expansion connectors for further expansion
13. 5Vin pinheader, 5V power supply is required when using USB HOST/OTG
14. USB jumper
    • short the jumper when using USB
    • open the jumper to disconnect from I/O ports
15. VBAT selection jumper
    • short the jumper to use system power supply
    • open the jumper to connect the VBAT to external power, such as battery
16. VREF selection jumper
    • short the jumper to connect VREF+/VREF- to VCC/GND
    • open the jumper to connect VREF+/VREF- to other custom pin via jumper wire

Photos

Note:
The Open407V-C supports programming via STM32 UART bootloader, a USB TO UART accessory board is also provided in the package.
The Open407V-C does NOT integrate any debugging function, a debugger is required.

JTAG/SWD interfaces

The figure 1, and 2 show the header pinouts of JTAG/SWD interface

Development Resources

• Related software (KEIL etc.)
• Demo code (examples in C, μC/OS-II)
• Schematic (PDF)
• STM32 development documentations (Datasheet etc.)

Wiki: www.waveshare.com/wiki/Open407V-C