89S51 Atmel Microcontroller IC

The AT89C51 designed as an effectively low-power, high-performance CMOS 8-bit microcontroller. It comes with 4K bytes of in-system programmable Flash memory manufactured using Atmel’s high-density nonvolatile memory technology. Meanwhile, it is compatible with the industry-standard 80C-51 instruction set and pinout. The on-chip Flash on the chip permits the program memory to be reprogrammed in-system.  Or via a standard non-volatile memory programmer.

In this Atmel microcontroller,  by combining a flexible 8-bit CPU with in-system programmable Flash on a monolithic chip, Atmel AT89C51 becomes effectively powerful microcontroller. In order that it delivers a highly flexible and affordable solution to various embedded control applications. Moreover, the Atmel AT89C51 features 4K bytes of Flash, 128 bytes of RAM, 32 I/O lines, two 16-bit timer/counters. And also equipped with five vector two-level interrupt architecture, a full-duplex serial port interface, two data pointers,Watchdog timer,  on-chip oscillator and clock circuitry.

Watchdog timer

In addition to it, the AT89C51 equipped with static logic for operation right down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the functioning of the CPU allowing the RAM, timer/counters, serial port, and interrupt system to continue their operation. Whereas, the Power-down mode saves the RAM contents but freezes the oscillator. Thereby disabling all other chip functions until the next external interrupt or hardware reset. These two features makes it suitable for battery operated applications.

Applications

• Multiple DIY Projects
• The perfect tool if you are learning ATmel
•  Multiple I/O interfaces and communications related projects
• Replacement for Arduino Module
• Perfect for more advanced level A/D applications in automotive, industrial, appliances and consumer applications.