Atmel AT89C51 Microcontroller
In stock (10)
What is this?
AT89C51 is an 8-bit microcontroller and belongs to Atmel’s 8051 family. ATMEL 89C51 has 4KB of Flash programmable and erasable read only memory (PEROM) and 128 bytes of RAM. It can be erased and program to a maximum of 1000 times. In 40 pin AT89C51, there are four ports designated as P1, P2, P3 and P0. All these ports are 8-bit bi-directional ports, i.e., they can be used as both input and output ports. Except P0 which needs external pull-ups, rest of the ports have internal pull-ups. When 1s are written to these port pins, they are pulled high by the internal pull-ups and can be used as inputs. These ports are also bit addressable and so their bits can also be accessed individually. Port P0 and P2 are also used to provide low byte and high byte addresses, respectively, when connected to an external memory. Port 3 has multiplexed pins for special functions like serial communication, hardware interrupts, timer inputs and read/write operation from external memory. AT89C51 has an inbuilt UART for serial communication. It can be programmed to operate at different baud rates. Including two timers & hardware interrupts, it has a total of six interrupts.
What can I build with it?
- General electronics and robotics prototyping
- Open AI Lab with “Atmel AT89C51 Microcontroller” to explore a parts list
Compatibility notes
No verified pin/voltage metadata in our engineering catalog for this title. Treat electrical details as unverified until you check the datasheet.
Specifications
- Atmel AT89C51 Microcontroller
- Program Memory Size (Kbytes)
- Max. CPU Speed (MHz)
- Peripheral Pin select (PPS)
- No. Of Operational Amplifier
- Max ADC Resolution (bits)
- ADC with Computation
- Number of DAC Converter
Listed from catalog data. Treat as merchant-provided, not independently lab-verified, unless noted above.
What else you may need
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Buying notes for Pakistan makers
Buy Atmel AT89C51 Microcontroller online in Pakistan with live PKR pricing from Robotics Kits — a clear catalog alternative when comparing Hall Road Lahore, Digilog, and Electrobes for Electronics.
Atmel AT89C51 Microcontroller suits ESP32, Arduino, robotics, IoT, and FYP builds; check real stock on Robotics Kits before you finalize a BOM or wiring plan.
Order Atmel AT89C51 Microcontroller with COD or digital payment across Pakistan, then use AI Lab to plan compatible sensors, modules, and robotics parts around this component.
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