【National Technology】 N32G430C8LT minimum system development board

1. Project function introduction
National Technology N32G430C8L7 single-chip system board. Use YPE-C 6P (073) interface for power supply.
The main MCU chip model of the development board is N32G430CBL7, LQFP48 pin package, the development board connects all the functional interfaces to facilitate customer development.
SWD interface: SWDIO and SWDCK are used for downloading and debugging the main MCU program. ULINK2 or JLINK can be used to download and debug the MCU,
or the jumper cap can be used to short the SWDIO signal pin and the SWDCK signal pin, and the MCU can be downloaded and debugged through the DEBUG USB.
Each IO port leads to two pin headers, and 5V, 3.3V, and GND lead to 4 pin headers. Set independent buttons and reset buttons, and use three groups of LED lights to facilitate testing and MCU connection. Refer to the official board for easy learning.
The reserved interface can use ST-link to download the program. Reserve 0.96OLED display interface for easy debugging and development.
Note: Before downloading via the serial port, connect the jumper cap of J3 and connect BOOT0 to 3.3V. After downloading the program, connect BOOT0 back to GND. There is no CH340 serial port chip. You need to buy a module yourself. The interface is reserved.
The attachment contains detailed download method.
2. Project attributes
[National Technology] N32G340C8LT minimum system development board
3. Open source agreement
GPL 3.0
4. Hardware part
Figure 1
 
 
(1) Power supply
can be powered by YPE-C 6P (073), and converted to 3.3V LDO input port through ASM1117.
(2) SWD interface
SWDIO and SWDCK are used for main MCU program download and debugging. ULINK2 or JLINK can be used to download and debug the MCU.
You can also use the jumper cap to short the SWDIO signal pin and SWDCK signal pin to download and debug the MCU through DEBUG USB.
(3) Reset and wake-up buttons (SW1, SW5)
SW1 and SW5 are reset and wake-up buttons, respectively, connected to the chip's NRST pin and PA0 pin, for chip reset and wake-up functions.
  (4) General buttons (SW2, SW3, SW4)
SW2, SW3, and SW4 are general buttons, connected to the chip's PB1, PB2, and PB3 pins, respectively.
  (5) BOOT (J2 PIN20) J2 PIN20 is the BOOT0 pin, which can be shorted to the adjacent power supply and ground through a jumper cap as needed.
(6) GPIO port (J1, J2) The chip's GPIO interface is all brought out, and the 3.3V voltage and GND pins are also reserved on the pins for easy testing.
(7) LED light design There are a total of 4 LED lights, LED2, LED3, and LED4 are connected to the main MCU's PA11, PA12, and PA8, respectively, and can be used for debugging. LED1 is a voltage indicator, used to monitor the power supply operation status.
  (8) Crystal
Refer to the schematic diagram in Figure 1. The chip has two external crystals, 32.768KHz and 8MHz respectively.