Single chip microcomputer is classified by data bus
There are many types of single-chip microcomputers, which are generally classified according to the number of bits of the data bus of the single-chip microcomputer, and are mainly divided into 4-bit, 8-bit, 16-bit and 32-bit single-chips.
4-bit microcontroller
The 4-bit single-chip microcomputer has simple structure and low price. It is very suitable for controlling single small electronic products, such as PC input devices (mouse, joystick), battery charger, remote control, electronic toys, small household appliances, etc.
8-bit microcontroller
8-bit microcontrollers are currently the most abundant and widely used microcontrollers. At present, 8-bit microcontrollers are mainly divided into 51 series and non-51 series.
The 51 series of single-chip microcomputers can be called a generation of "famous machines" with their typical structure, numerous logical bit operation functions, and rich instruction systems. At present, the main manufacturers include Atmel, Philips, and Winbond. (Winbond) etc.
Non-51 series MCUs are widely used in China including Microchip's PIC MCU, Atmel's AVR MCU, Elan EM78 series, and Motorola (Motorola) 68HC05/11/12 series MCU.
16-bit microcontroller
The operating speed and data throughput of 16-bit single-chip microcomputers are greatly improved in performance compared to 8-bit machines. At present, TI’s MSP430 series, Sunplus SPCE061A series, Motorola’s 68HC16 series, Intel’s MCS-96/196 series, etc. are more commonly used.
32-bit microcontroller
Compared with 51 single-chip microcomputers, the operating speed and functions of 32-bit single-chip microcomputers have been greatly improved. With the development of technology and the decline of prices, it will keep pace with 8-bit single-chip microcomputers.
32-bit single-chip microcomputers are mainly developed by ARM. Therefore, when 32-bit single-chip microcomputers are mentioned, they generally refer to ARM single-chip microcomputers.