The 8051 series microcontroller is the most commonly used microcontroller. Its interrupt vector table is as follows:
Below are the various packages and pinouts of the 8051 microcontroller.
Reference address：51 MCU interrupt vector table
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51 MCU + TM1620 drive 3-digit digital tube program
TM1620 is a diode driver chip produced by Tianwei Company, SOP20 package. The chip is shown in the figure below: It can drive up to 6 8-bit digital tubes, as shown in the following figure: The procedure is as follows: /****************************************************** *
* Name: STC51 drives TM1620 3-digit
[Microcontroller]
51 MCU Study Notes 0 -- Simulation Software Installation (Protues8.0)
For those who are learning 51 MCU or novices, if they don't have 51 development board, they can't do functional verification with just a set of code. At this time, circuit simulation software is very useful. However, there is a problem that you need to learn a new software (simulation software). The simulation softwar
[Microcontroller]
51 MCU PWM control motor
When I was a kid, the four-wheel drive car I played with would run away just by plugging in the DC motor. There are many types of motors, but the DC motor is the easiest to control. You can change the direction of the motor by simply swapping the positive and negative poles. In addition, the DC motor has a strong l
[Microcontroller]
How the MCS-51 series microcontroller finds the address of the operand storage unit
There are 6 ways to find the address of the operand storage unit. 1. Immediate addressing The operand to be found is a binary or decimal number, which appears in the instruction and is prefixed with "#". MOV A, #20H 2. Register addressing The operands are stored in working registers R0 ~ R7, or register B.
[Microcontroller]
The simplest system of 51 single chip microcomputer
power supply This does not need much explanation. It is impossible to work properly without power. The key question is what kind of power supply does the microcontroller need and which pin should it be connected to? See the figure below: Usually when we number the pins of a chip, we make the semicircular notch face
[Microcontroller]
51 MCU accumulates main cycle times to realize independent key press
1. Use proteus to draw a simple circuit diagram for subsequent simulation 2. Programming /******************************************************************************************************************** ---- @Project: Independent-KEY ---- @File: main.c ---- @Edit: ZHQ ----@Version: V1.0 ---- @CreationTime: 202
[Microcontroller]
51 single chip microcomputer---light up the LED light
LED working conditions The operating voltage drop of ordinary light-emitting diodes is 1.6V – 2.1V Working current 1-20mA Here I = U/R = 3mA Light up the LED Here, you only need to control the P1 port to output a low level to light up the LED (that is, assign a value of 0 to the P1 port during programming). MC
[Microcontroller]
Liquid Level Detection System Based on 51 Single Chip Microcomputer
With the development of modern measurement technology, higher and higher requirements are put forward for the measurement system. In the automatic distillation measurement and control system, the accurate and timely detection of the first drop of liquid distilled from the condenser during the distillation process is
[Microcontroller]
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MCU C language programming and Proteus simulation technology (Xu Aijun) - 100 Examples of Microcontroller C Language Applications (with CD-ROM, 3rd Edition) (Wang Huiliang, Wang Dongfeng, Dong Guanqiang)
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