STC is an improved version of the 51. The internal EEPROM makes it convenient for saving parameters, and its EMC performance is slightly better, with a relatively lower price.
1. Comparison of AVR Microcontroller and 8051
The main differences between AVR and 8051 are the core, instruction set, I/O structure, and peripherals.
AVR microcontrollers have much more hardware resources than 8051. The MEGA series within AVR microcontrollers includes an internal AD converter, which allows for simple circuits to operate with virtually no external components, making it very convenient. It is a mainstream microcontroller and is also affordable!
ATMEL’s AVR microcontroller is an enhanced RISC microcontroller with internal FLASH. The FLASH memory on the chip can be programmed and reprogrammed at any time, making product design easier and updates more convenient. The AVR microcontroller uses an enhanced RISC architecture, providing high-speed processing capabilities, executing complex instructions within a single clock cycle, achieving 1 MIPS processing power per MHz. The operating voltage of the AVR microcontroller ranges from 2.7 to 6.0V, optimizing power consumption.
2. STC and 51
STC is an improved version of the 51, with internal EEPROM for convenient parameter storage, slightly better EMC performance, and a relatively lower price.
3. 8051 Microcontroller
The 8051 microcontroller was first introduced by INTEL, and later, many companies purchased the 8051 core, making the MCU series based on the 8051 the most widely produced and used in the world.
4. MICROCHIP Microcontroller
MICROCHIP’s main products are the PIC 16C and 17C series 8-bit microcontrollers, which use a RISC structure with only 33, 35, and 58 instructions, respectively. They adopt a Harvard dual-bus architecture, have fast operating speeds, low operating voltages, low power consumption, substantial direct drive capability for inputs and outputs, low prices, single programming, and small sizes.
