Sunday, January 10, 2021

Features of 89C51

 Features of 89C51

1.      89C51 is compatible with MCS-51 family It means it is compatible with any of microcontroller device related with 51 family.

2.      8 bit data bus and 8 bit ALU It can perform arithmetic logical operations with 8 bit data. 

3.      4K Bytes of On-Chip Reprogrammable Flash Memory In this chip the available memory is 4K Bytes. This is reprogrammable in an instant.

4.      Support Three-Level Program Memory Lock. It means that there are three different levels of locking available for the program memory.

5.      16 bit address bus – 64KB of RAM and ROM. It has 16 bit address bus and 64 KB of RAM and ROM.

6.      On Chip RAM – 128 bytes (Data Memory). It has 128 bytes of data memory to save instructions.

7.      Four 8 bit bi-directional input/output ports Four 8 bit bidirectional input/output ports i.e. 31 Programmable I/O Lines.

8.      Programmable serial ports i.e. One UART (serial port).

9.      Two Multimode 16 bit timers.

10.   6 interrupt source.

11.    Two-level interrupt priority.

12.    Power saving mode.

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