【Minimum system】IAP15F2K61S2

1. Introduction to the core board
      With the upgrading of technology, the traditional 8051 core can no longer meet the daily learning and design needs. The STC15 series of microcontrollers with enhanced 8051 cores have appeared in everyone's field of vision. With the continuous development of IAP technology in the field of microcontrollers, STC has launched the IAP series of microcontrollers. One of its notable features is the simulation function, which can debug the program in Keil, which can help us quickly find bugs in the program. At present, the IAP15 microcontroller has been widely used in various microcontroller courses and professional competitions. The most well-known one is the IAP15 microcontroller in the Blue Bridge Cup microcontroller competition.
      In order to help everyone better learn the theory and application basis of microcontrollers, the Future Electronic Studio refers to the design of the popular STM32 minimum core board and designs such a core board with onboard USB download circuit and EEPROM storage circuit. We provide complete design process documents and video resources, starting from the hardware design basics of circuit schematic design, PCB design and welding debugging, to the construction of development environment, program function demonstration of each function of the core board, and then combined with the competition projects of previous Blue Bridge Cup competitions and some practical electronic design project analysis, to help everyone better learn the application development of this microcontroller. It is very suitable for microcontroller teaching in colleges and universities, Blue Bridge Cup training, enthusiast learning, and engineer learning and rapid development.
Figure 1-1 IAP15F2K61S2 core board hardware diagram
 

2. Onboard resources
Main control chip: IAP15F2K61S2, LQFP-32 chip package
Power connection: Use 1 Type C for power supply or connect to the computer for program download
Serial port download: Use CH340N chip to communicate with the computer, no external downloader is required
Serial port communication: A 4-pin pin header is led out, and can communicate with external devices via serial port
LED display: A power indicator and a status indicator
Button control: A normally closed switch is used for cold start download of the chip, and an independent button with interrupt function
Program expansion: Use the IIC interface to plug in an M24C20 EEPROM chip
Pin header interface: Lead out all chip pins, compatible with other mainstream single-chip core board pin arrangements.
      This core board has onboard serial port download, which can be easily learned and debugged. From the most basic input and output function learning, serial port communication, IIC communication, and single-chip interrupt, timer, PWM and other important functions can be learned in this core board. All the pins of the core board are led out and compatible with other mainstream microcontrollers. The spacing between the upper and lower pins of the board is 15.24mm (600mil). It can be inserted into a breadboard or a perforated board, which is convenient for function expansion and debugging, and can quickly complete the verification of the project, making the learning of microcontrollers easier.
Figure 1-2 IAP15F2K61S2 core board size diagram

III. Advantages and features
Small appearance: The board size is only 53.36mm*22.86mm (2100mil*900mil), and it can be arbitrarily matched with the baseboard for project development
High cost performance: Using enhanced 51 core chips, rich functional pins, and low price
Flexible design: All IOs are led out, which is convenient for verification and debugging of various functions
Convenient debugging: Onboard CH340N serial port chip, no downloader is required for program download and debugging
High quality: Use Jiali Chuang high-quality PCB and genuine components to ensure product quality
Complete tutorial: Supporting user manual, code routines, and complete development tutorial videos. From circuit design, PCB design to software programming and debugging, with a complete knowledge system and extended projects, the development and learning capabilities of embedded engineers are cultivated in the process of learning single-chip microcomputers.

4. Application scenarios
Circuit EDA software learning, learning circuit schematics, PCB design, learning to make a minimum system
college teaching application, learning microcomputer principles and program design, using the core board to complete course design projects
Electronic enthusiasts learning, mastering single-chip microcomputer circuit design and program development capabilities, learning project development specifications
Electronic engineer verification, quickly getting started with IAP15 single-chip microcomputer learning, verifying the required functions Development
competition learning and training, you can quickly build the required circuits in the electrical competition and train for the Blue Bridge Cup single-chip microcomputer competition