STM32F103RBT6 minimum system
This is a ARM core board based on the main chip Stm32F103RBT6 , has the following characteristics:
1, on board the most basic MCU-based circuits, such as crystal oscillator circuit, USB power management circuit and USB interface.
2, increase the EEPROM (I2C / 1028Byte x8) storage circuit.
3, leads to all the I / O port resources.
4, with SWD simulation debugging download interface, the interface requires at least three lines to complete the debugging download task.
5, the use of the current smart phone used by the Mirco USB interface, easy to use, do USB communication and power supply.
6, the core board of the system crystal (8MHz) the use of extremely high quality and low quality NDK company's NX5032GA, without the use of low-cost iron crystal.
7, using the official proposal of low-load RTC crystal program, and the use of the Epson brand crystal, rather than cheap cylindrical crystal.
8, power regulator chip input and output, respectively, placed a large capacity of high-capacity tantalum capacitors, will be in the regulator, filter plays an extraordinary effect.
9, with a high quality 2 * 13 / 2.54mm spacing of the double row of pin, to ensure good contact with electrical conductivity, user-friendly core board will be placed on the standard million board or breadboard. Paier default welding, the user can choose according to their own needs welding direction
Package Type: LQFP;
Number of pins: 64;
Kernel: Cortex ™ -M3;
Operating frequency: 72MHz;
Storage Resources: 128K Byte Flash, 20KByte SRAM;
Interface resources: 2xSPI, 5xUSART, 2xI2C, 1xCAN, 51xI / O port,
Analog-to-digital conversion: 3x ADC (12-bit / 16-channel),
Timer: 3 general timers 1 advanced timer
Debug download: support JTAG / SWD interface debugging download, support IAP.
2, AMS1117-3.3V: 3.3V regulator chip, the maximum to provide 1500mA current.
3, AT24C08: 1024Byte x8, high data transfer rate of 400KHz and IIC bus and
Capacity, the number of erase in about 100 million times, the data storage can be 100 years;
Introduction to interfaces:
1, SWD interface: support simulation, download and debugging.
2, Mirco USB interface: power supply and USB communication function, does not support the download.
3, USART1 interface: can be used for USART1 download program, or use USART1
4, MCU pin interface: lead all the I / O port pin, easy to connect with the peripherals.
5,5V and 3.3V power input and output interfaces: commonly used for external power supply, or with other modules
Other device introduction:
1, power LED (PWR): power indicator state, you can determine whether the power supply is stable.
2, user LED (PC13): easy to I / O output test or indicate the program running status.
3, start jump selection programming mode: (1, user flash 2, SRAM 3, system memory).
4, reset button: for the user to reset the chip program.
5,8M crystal: can be set by the frequency to make the system clocked at 72MHz.
6,32.768KHz Crystal: available for built-in RTC, or for calibration.
1, keil ARM software MDK programming software
2, the core board program Demo (mainly core board test program)
3, the core board technical documentation (mainly related device technical manual)
4, the core board hardware information (mainly circuit diagram)
5, STM32 learning materials (technical manual and reference routines)
STM32 series MCU now download the program usually use SWD mode and ISP mode: the store has its supporting debugging module, wiring and use is very convenient, it is recommended to buy. Respectively:
1, the use of SWD mode download, you need to use the debugger is J-Link or ST-Link
2, the use of ISP mode download, you need to use the USB to serial (TTL level)
1, if the core board has been powered by other power modules, the USB to TTL module 3.3V pin does not need to connect with the core board 3.3, just connect the three DuPont line to avoid cross-powered;
2, in the download process, the need to set the BOOT pin to BOOT0 = 1; BOOT1 = 0, so that through the serial download program;
3, if you want to debug the serial port function, you do not need to set the BOOT level pin, according to the default settings can be.
4, under normal circumstances, ISP mode download SWD mode download a little more trouble, often used as a debugging serial port.
If the user has J-Link (such as J-Link V8) and ST-Link (ST-LINK / V2), do not have to buy, but wiring attention, line order not wrong, as shown below:
1, Stm32F103RBT6 core board 1
2,2 * 13 2.54mm pitch pin 2
3, supporting learning materials: through the network disk download and forum download