IC AT89C51

Description

The AT89C51 is an age old 8-bit microcontroller from the Atmel family. It works with the popular 8051 architecture and hence is used by most beginners till date. It is a 40 pin IC package with 4Kb flash memory. It has four ports and all together provide 32 Programmable GPIO pins. It does not have in-built ADC module and supports only USART communication. Although it can be interfaced with external ADC IC like the ADC084 or the ADC0808.

The AT89C51 is no longer in production and Atmel does not support new design. Instead the new AT89S51 is recommended for new applications. But, since the AT89C51 has a strong community support if your motive is to learn embedded then AT89C51 can still be a good choice.

Atmel microcontroller can be programmed with different software’s that is available in the market. Arduino, Keil uVision are the most used platforms to name a few. If you are planning on serious programming and expansion with community support then Keil is recommended.

In order to program the Atmel microcontroller we will need an IDE (Integrated Development Environment), where the programming takes place. A compiler, where our program gets converted into MCU readable form called HEX files. An IPE (Integrated Programming Environment), which is used to dump our hex file into our MCUs.

IDE: Keil uVision IDE

Programming Hardware: MAX232 with RS232 to USB converter

Programmer: USBASP

To dump or upload our code into Atmel IC we need a programmer, the most commonly used programmer is the USBASP which has to be purchased separately. Also simulating you program on software before trying it on hardware will save a lot of time. So you can use software like ISIS proteus from Labcenter to simulate your programs.

Applications:

• Multiple DIY Projects
• Very good choice if you are learning ATmel
• Projects requiring Multiple I/O interfaces and communications
• Replacement for Arduino Module
• Ideal for more advanced level A/D applications in automotive, industrial, appliances, and consumer applications.4

Datasheet available here.

Package Include:

1 x IC AT89C51