of the AT89C51, as shown in the following table. effect if the microcontroller is in external execution mode. PSEN . as Timer 0 and Timer 1 in the AT89C AT89CPI Microchip Technology / Atmel 8-bit Microcontrollers – MCU UNSAWN WAFER 21 MIL BACKGRIND 89C51 – 24MHZ, PDIP, IND TEMP datasheet. AT89C51, AT89C51 pdf, Atmel, Download pdf datasheet. AT89CA-M, AT89CA-M AT89CA-M 8-bit Flash Microcontroller with Full Speed USB .

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In order to program the Atmel microcontroller we will need an IDE Integrated Development Environmentwhere the programming takes place.

AT89CPC – AT89C51 Pin 24MHz 4kb 8-bit Microcontroller Technical Data

This high-density System-in-Package SiP integrates controller, power switches, and support components. Low-order address bits when interfacing with external memory. It can be programmed to operate at different baud rates. The AT89C51 datasheet of the Microcontroller and more detailed Features can be found at the bottom of this page.

The AT89C51 is an age old 8-bit microcontroller from the Atmel family. TL — Programmable Reference Voltage. If you are planning on serious programming and expansion with community support then Keil is recommended.


Interface SD Card with Arduino. It can be erased and program to a maximum of times.

Except P 0 which needs external pull-ups, rest of the ports have internal pull-ups. Quartz crystal oscillator up to 24 MHz. But, since the AT89C51 has a strong community support if your motive is to learn embedded then AT89C51 can still be a good choice. What is Web Browser. Skip to main content.

Submitted by webmaster on 14 May Instead the new AT89S51 is recommended for new applications. Reset pin; Active high. Program pulse input during Flash programming. Each MCU has its own advantage and disadvantage. It is a 40 pin IC package with 4Kb flash memory.

Choosing Battery for Robots. Virgin Galactic — Commercial Space Flight. Also simulating you program on datssheet before trying it on hardware will save a lot of time.

Atmel microcontroller can be programmed with different software’s that is available in the market. Choosing Motor For Robots. Arduino based GPS receiver. Output transmitter for serial communication.

Supply voltage; 5V up to 6. Write to external data memory.

Search Results for AT89C51 : 26 documents found

All these ports are 8-bit bi-directional ports, i. Input receiver for serial communication. AT89C51 is an 8-bit microcontroller and belongs to Atmel’s family.


It works with the popular architecture and hence is used by most beginners till date. Programming enable voltage; 12V during Flash programming. The AT89C51 is no longer in at899c51 and Atmel does not support new design. Their collection has just piled up after Microchip has acquired Atmel. The below points are just suggestions which might help one to select a MCU. These ports are also bit addressable and so their bits can also be accessed individually.

Read from external data memory. When 1s are written to these port pins, they are pulled high by the internal pull-ups and can be used as inputs. Arduino, Keil uVision are the most used platforms to name a few.

Port P 0 and P 2 are also used to microcontrol,er low byte and high byte addresses, respectively, when connected to an external memory. Interface GPS with Arduino.