Single-chip computer learning Note 1

First, the concept of single-chip microcomputer, application.

Microcontroller is also called MCU (microcontroller).is aIC Chip, is the use ofLarge scale integrated circuittechnology that has the ability to process dataCpuCPU,Random memoryRAM,Read-only memory rom, multiple I/O ports, andInterrupt System,Timer/Counter and other functions (may also include a display driver circuit,Pulse width modulationcircuit, analog multi-channelConverters,A/D convertersintegrated into a single wafer, a small, well-formedMicro computer systems.the use of single-chip microcomputer has been widely used, such as intelligent instrumentation, real-time industrial control, communications equipment, navigation systems, household appliances and so on.

Basic function: (take 51 single chip microcomputer as an example)

1.8-bit data bus, 16-bit address bus CPU;

2. With Boolean processing capacity and bit processing capacity;

3. Using the Harvard structure, the program memory and the data memory address space are independent and easy to program;

4.64KB program memory and 64KB data memory of the same address;

5.0-8KB on-Chip program memory (8031 None, 8051 have 4kb,8052 have 8kb,89c55 20KB);

6.128-byte on-chip data memory (8051 with 256 bytes);

7.32 I/O lines that are bidirectional and can be addressed by bit;

8. Two 16-bit timing/counter (8052 with 3);

9. A full-duplex serial I/O interface;

10. Interrupt structure of multiple interrupt sources with two interrupt priority;

11. On-Chip clock oscillator.

features :

1. Microprocessor (CPU) as the core;

2.CPU is connected to other components via a three-bus connection. (Control bus, data bus, address bus)

Pre-study requirements.

1, basic theory knowledge includes analog circuit , digital circuit and C language knowledge.

The knowledge of digital circuits is helpful to understand the structure and principle of SCM. Analog circuit knowledge facilitates hardware design.

Post-Learning Requirements:

2, the use of single-chip microcomputer control more peripheral devices, such as AT24C02, display equipment, SD card storage equipment, wireless modules.

The most important to be able to rise to the height of the product to see the feasibility of this design, stability.

Single-chip computer learning Note 1