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List of the table of contents of this article:

• 1 、Single-chip microcomputer minimum system (basic composition and principle)
• 2, single-chip microcomputer minimum system principle description, schematic diagram, and circuit description
• 3, single-chip microcomputer minimum system schematic diagram, please explain in detail

Single-chip microcomputer minimum system (basic composition and principle)

1. The following figure is the schematic diagram of the minimum system, that is, with these four parts, the single-chip microcomputer can run. In the first part, the power supply group is usually said to be extremely "ground", and the GND above is the abbreviation of ground in English. In the second part, the crystal vibration group filters out the high-frequency signal of the crystal vibration part to make the crystal vibration more stable when working.

2. The minimum system of single-chip microcomputer is composed of basic circuits such as single-chip microcomputer, crystal oscillator, power supply and reset circuit. Single-chip microcomputer Single-chip microcomputer is the core of the whole system. It is an integrated circuit, including central processor (CPU), memory (ROM and RAM), input and output interface (I/O port) and timing counter and other functional modules.

3. Analysis of the internal composition and application principle of single-chip microcomputer Minimum system: the system that can work with the smallest components.

4. Schematic diagram of the minimum system The minimum system is mainly composed of five major parts: power supply, clock, debugging, reset, and control chip.

5. Schematic diagram of single-chip microcomputer minimum system: 51 single-chip microcomputer minimum system circuit introduction: 51 single-chip microcomputer minimum system complexThe size of the polarity capacitance C1 of the bit circuit directly affects the reset time of the single-chip microcomputer. Generally, 10~30uF is used. The larger the minimum system capacity of the 51 single-chip microcomputer, the shorter the reset time required.

6. What does single-chip microcomputer minimum system mean? Single-chip microcomputer minimum system refers to the smallest application system of single-chip microcomputer, that is, a system composed of minimal originals can work normally. It is a basic application system composed of a clock circuit, reset circuit and power supply connected to the outside of the chip.

Single-chip microcomputer minimum system principle description, schematic diagram, and circuit description

1. The size of the polarity capacitance C1 of the single-chip microcomputer minimum system reset circuit directly affects the single-chip microcomputerThe reset time is generally 10~30uF. The larger the minimum system capacity of 51 single-chip microcomputers, the shorter the reset time required.

2. The following figure is the minimum system schematic diagram, that is, relying on these four parts, the single-chip microcomputer can run. In the first part, the power supply group is usually said to be extremely "ground", and the GND above is the abbreviation of ground in English. In the second part, the crystal vibration group filters out the high-frequency signal of the crystal vibration part to make the crystal vibration more stable when working.

3. For the 51 series single-chip microcomputer, the minimum system should generally include: single-chip microcomputer, crystal oscillation circuit, and reset circuit.



The schematic diagram of the smallest system of single-chip microcomputer, please explain in detail

1. The following figure is the schematic diagram of the smallest system, that is, relying on these four parts, the single-chip microcomputer can run. In the first part, the power supply group is usually said to be extremely "ground", and the GND above is the abbreviation of ground in English. In the second part, the crystal vibration group filters out the high-frequency signal of the crystal vibration part to make the crystal vibration more stable when working.

2. The smallest system of single-chip microcomputerUnified schematic diagram: 51 single-chip microcomputer minimum system circuit introduction: The size of the polar capacitance C1 of the minimum system reset circuit of 51 single-chip microcomputer directly affects the reset time of the single-chip microcomputer. Generally, 10~30uF is adopted. The larger the minimum system capacity of 51 single-chip microcomputer, the shorter the reset time required.

3. Schematic diagram of the minimum system The minimum system is mainly composed of five major parts: power supply, clock, debugging, reset, and control chip.

4. The power supply of the smallest system of the single-chip microcomputer has been completed, and then the positioning and reset of the single-chip microcomputer is prepared, in order to initialize the circuit to a certain state. The principle of the single-chip microcomputer reset circuit is to reset the external resistance and capacitor on the reset pin RST of the single-chip microcomputer to realize the power-on reset.

5. The smallest system of a single-chip microcomputer isIt is composed of some components necessary to form a single-chip microcomputer system. In addition to the single-chip microcomputer, it also needs to include power supply circuit, clock circuit and reset circuit. The minimum system circuit of the single-chip microcomputer (the power supply and ground of the single-chip microcomputer are not marked) is shown in Figure 2-7.

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