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AT89C4051-12PU

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AT89C4051-12PU

IC MCU 8BIT 4KB FLASH 20DIP

Manufacturer: Microchip Technology

Categories: Microcontrollers

Quality Control: Learn More

Microchip Technology AT89C4051-12PU is an 8-bit microcontroller featuring an 8051 core. This device operates at a maximum speed of 12MHz and includes 4KB of FLASH program memory, organized as 4K x 8. It offers 128 Bytes of RAM and 15 general-purpose I/O pins. The AT89C4051-12PU supports UART/USART connectivity and incorporates peripherals such as Brown-out Detect/Reset and Power-on Reset (POR). It is packaged in a 20-PDIP (0.300", 7.62mm) for through-hole mounting. The operating voltage range is 2.7V to 6V, with an operating temperature range of -40°C to 85°C. This microcontroller is suitable for applications in industrial automation, consumer electronics, and automotive systems.

Additional Information

Series: 89CRoHS Status: ROHS3 CompliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: TubeDatasheet:
Technical Details:
PackagingTube
Package / Case20-DIP (0.300"", 7.62mm)
Mounting TypeThrough Hole
Speed12MHz
Program Memory Size4KB (4K x 8)
RAM Size128 x 8
Operating Temperature-40°C ~ 85°C (TA)
Oscillator TypeInternal
Program Memory TypeFLASH
EEPROM Size-
Core Processor8051
Data Converters-
Core Size8-Bit
Voltage - Supply (Vcc/Vdd)2.7V ~ 6V
ConnectivityUART/USART
PeripheralsBrown-out Detect/Reset, LED, POR
Supplier Device Package20-PDIP
Number of I/O15
ProgrammableVerified

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Microcontroller FAQs

A microcontroller is a compact integrated circuit that combines a processor, memory, and input/output peripherals for embedded control applications.

Microcontrollers execute programmed instructions to process sensor inputs and control outputs such as motors, displays, and communication interfaces.

Microcontrollers are commonly used in:

  • Automotive systems
  • Robotics
  • IoT devices
  • Industrial automation
  • Household appliances
  • Smart electronics

Microcontrollers integrate memory and peripherals on-chip for dedicated tasks, while microprocessors are designed for higher-performance computing systems requiring external components.

Frequently Asked Questions

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