STM32H750VB/H7B0VB core board

# Introduction The core board is based on STM32H750VB and is compatible with STM32H7B0VB. The 4-layer board design integrates peripherals such as dual Flash, SD card slot and RGB screen interface while ensuring a small size. Already verified. # All features * Based on STM32H750VB design, compatible with STM32H7B0VB, STM32H730VB, STM32H725ZG, STM32H743VI and other H7 series 100-pin microcontrollers * Optimized for H750VB and H7B0VB. * The size is basically the same as the People's Republic of China resident ID card, and it is easy to assemble the box. * Equipped with RGB screen interface, compatible with the RGB screen interface of Punctual Atom. * When using H750VB, it can directly drive a 480x272@RGB565 screen; when using H7B0VB, it can directly drive a display with a resolution of up to 800x480@RGB565. * One QSPI-Flash, with equal-length traces to ensure performance, can be used to store code and support direct execution (XIP technology) * One SPI-Flash, can be used to store other data * 4 buttons, including a reset button and a BOOT buttons, and two user-defined buttons, of which button A has a sleep wake-up function. * Onboard CH340C USB-UART circuit can be directly used for serial port debugging and downloading functions * A USB-OTG interface supports USB-IAP function. The interface is equipped with a dedicated ESD protection diode to protect the MCU's IO from accidental ESD damage. * Two RGB-LED lights, one of which can be customized by the user. The other one is used as the power indicator light and serial communication indicator light. * Micro-SD card slot, the cheapest and most convenient choice when storing massive amounts of data or interacting with PCs with large amounts of data. * There is a fuse on the USB interface, which can protect it from accidents to a certain extent. * Lead out all IO except QSPI-Flash related pins. The pin header distance is designed to make it compatible with 2.54mm hole board, which is convenient for temporary testing of various peripherals. * Reserve CR1220 backup RTC battery pad * Except for the FPC interface, all components are on the same side to facilitate SMT operations # Tips * Although both H750VB and H7B0VB are nominally only 128KB Flash, after actual testing, most of them 750 and 7B0 actually have 2M internal Flash![image.png] * Press and hold the BOOT button, connect the core board to the computer through the USB-OTG interface, and you can directly use CubeProg to download the program![image.png] * All FMC related IOs are placed on the same pin header (yellow area in the picture below), so that it can be easily routed when designing the LCD expansion board! [image.png] * Because of the distance between the two pin headers It has been optimized to be compatible with 2.54mm pitch hole boards, so it is very convenient to temporarily make some small expansion boards. For example, I used a small piece of hole board to make a debugger adapter board, which can easily connect the debugger (yes , the IO layout has also been optimized, the power supply pins, SWD and RESET pins are all at the head of the pin header) ![image.png] ![image.png] * Because the size is the same as the ID card/bank card, so Just buy a storage box the size of an ID card. There are many such boxes on Taobao.com. ![image.png] #actual picture## Front![image.png] ## Back![image.png] ## Connect the punctual atomic RGB screen module![image.png] ## Direct drive RGB with 800x480 resolution Screen module![image.png]