System development board STM32F103C8T6 minimum system development board

MCU core board STM32 ARM chip

Features :

Package type: LQFP;

Number of pins: 48

within Nucleus: Cortex-M3
Working frequency: 72 MHz
Storage resources: 64K bytes flash memory, 20 kbytesram
Interface resources: 2xspi, 3xusart, 2x I2c, 1xcan, 37x I/O port
A / D conversion: 2 times a / D converter (12 bits / 16 channels)
Timer: 3 ordinary timers and 1 Advanced timer
Debug Download: support JTAG / interface debug download, support IAP
RT 9193: 3.3V voltage regulator chip, the maximum output is 300 ma.

About MCU:

1.72mhz operating frequency , Package type: LQFP;
2. One cycle multiplication , and hardware division Number of pins: 48;
3. 64k or 128K byte flash program memory
4. 20K byte s RAM Nucleus: Cortex-M3;

5. 2.0 ~ 3.6 V supply and I / O pins Working frequency: 72 MHz;
6. Power on / power off reset Storage resources: 64K bytes flash memory, 20 kbytesram;
(POR / PDR), programmable voltage monitoring (PVD)
Interface resources: 2xspi, 3xusart, 2xi2c, 1xcan, 37xi / 0 port
7. 4 ~ 16mhz RC oscillator A / D conversion: 2 times a / D converter (12 bits / 16 channels)
8. Built in smhz RC oscillator with factory calibration

9. Timer: 3 ordinary timers and 1 Advanced timer

10. PLL generating CPU clock
11. 32kHz RTC oscillator with calibration function
12. Sleep, shutdown and standby modes
13. V bat supplies power to RTC and backup register
14.2 12 bit ADC, 1US conversion time (up to 16 input channels)
15. DMA,
16. 37 fast I/O ports, 1/O port can be mapped to 16 external interrupts; port All can tolerate 5V signal
17. 3pcs universal timers, 1pcs timer
18. 2pcs (SPI1, SPI2)
19. 2pcs (I2C, | 2c2)
20. 3pcs (usart1, usart2, rsart3)
21.1pcs (USB2.0 full speed)
22.1pcs (2.0B active)

Interface description
1. SWD interface: support simulation, download and debugging.
2. Micro USB interface: power supply and USB communication function, do not support download.
3. Usart1 interface: can be used for usart1 to download programs, or use USA RT1 communicates.
4. MCU pin interface: lead out all I / 0 port pins to facilitate connection with peripheral devices.
5. 5V and 3.3V power input and output interface: commonly used for external power supply, or with other modules

Co processing was carried out.

Device description
1. Power LED (PWR): power indicator state 8, can judge whether the power supply is stable.
2. User LED (pc13): convenient for IO choke test or indication of program running status.
3. Select programming mode for boot hopping: (1. User flash 2. SRAM 3. System memory)
4. Reset button: used to reset the chip program.
5.8m crystal oscillator: the main frequency of the system can be set to 72mhz by frequency doubling.
6.32.768khz crystal oscillator: it can be used for built-in RTC or for calibration.

About Usage:

1. Use the micro USB interface to power supply (ordinary Android data cable can be used)

Development of toilet equipment
2. It has voltage regulator chip, which is convenient for level conversion, and is connected with microusbr interface
If you need to use 3.3V voltage.The 3.3V pin on the top provides power for the core board.

(pay attention to strictly forbid too much Power input to prevent short circuit fault)
3. The double row needle of this chain is not welded by default for the convenience of customer design and development Choose for yourself.
4. Using SWD debugging interface, this interface needs three interfaces to complete debugging and downloading.
Compared with the traditional JTAG debugging, it has many advantages. (JTAG will be eliminated at present
For example, ST's new Mo system only retains the SWD interface and cancels JTAG Interface)
5. In view of the problem that se32rtc does not vibrate, we adopt the low load RTC crystal oscillator scheme.

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