SCM - in the LCD module
51 single chip microcomputer
Single chip microcomputer (
Is a kind of integrated circuit chips, is to use very large scale integrated circuit technology with data processing ability of the central processor CPU, RAM, RAM, read-only memory ROM, a variety of I/O mouth and interrupt system, timer/counter function (such as
May include display driver circuit, pulse width modulation circuit, analog multiplexer and A/D converter circuit)
Integrated into a silicon wafer that constitutes a small and perfect microcomputer system, widely used in industrial control field.
Since the 1980 s, by the time of the four, 8-bit microcontroller, development to the present 300 m high speed single chip microcomputer.
The structure and function of 51 single-chip microcomputer basic functions: 1.
8-bit data bus, 16 bits CPU address bus;
Has the Boolean processing capacity and processing power;
The harvard structure, program memory and data memory address space, independently to facilitate programming;
Same address 64 KB of program memory and 64 KB data memory;
8 KB on chip program memory (
8031, 8051 8052 4 KB, 8 KB, 89 c55 20 KB)
128 bytes in the data memory (
8051 there are 256 bytes)
32 two-way and who can be addressing the I/O lines;
Two 16 bit timer/counter,
8052 there are 3)
A full duplex serial I/O interface;
Interrupt structure of multiple interrupt sources, has two interrupt priority;
On-chip oscillator clock.
With microprocessor (
As the core;
Through the three bus connection between CPU and other components.
Bus: refers to serve multiple parts of information transmission line on a: LCD display industry development present situation analysis of individual into the future trend of the next: electronic co. , LTD. Company introduction