IC AT89C4051 8-bit MCU 8-Bit AT89 CISC 20-pin DIP

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$2.69 ea

48 In Stock
100 ship on Oct. 29

  • Jameco Part no.: 204089
  • Manufacturer: Atmel (Microchip)
  • Manufacturer no.: AT89C4051-24PU
  • HTS code: 8542310000
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8-Bit Microcontroller with 4kB Flash

The AT89C4051 is a low-voltage, high-performance CMOS 8-bit microcomputer with 4K bytes of Flash programmable and erasable read-only memory (PEROM). The device is manufactured using Atmel's high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C4051 is a powerful microcomputer which provides a highly-flexible and cost-effective solution to many embedded control applications.


  • Compatible with MCS®51 Products
  • 4K Bytes of Reprogrammable Flash Memory
  • Endurance: 1,000 Write/Erase Cycles
  • 2.7V to 6V Operating Range
  • Fully Static Operation: 0 Hz to 24 MHz
  • Two-level Program Memory Lock
  • 128 x 8-bit Internal RAM
  • 15 Programmable I/O Lines
  • Two 16-bit Timer/Counters
  • Six Interrupt Sources
  • Programmable Serial UART Channel
  • Direct LED Drive Outputs
  • On-chip Analog Comparator
  • Low-power Idle and Power-down Modes
  • Brown-out Detection
  • 20-pin PDIP package

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Specification Value
Maximum Speed24 MHz
Device Core8051
Instruction Set ArchitectureCISC
Maximum Clock Frequency24MHz
Data Bus Width8Bit
Family NameAT89
Number of Programmable I/Os15
Number of Timers2
Program Memory Size4KB
Program Memory TypeFlash
RAM Size128Byte
Interface TypeUART
Minimum Operating Supply Voltage4V
Typical Operating Supply Voltage5V
Maximum Operating Supply Voltage6V
Minimum Operating Temperature0°C
Maximum Operating Temperature70°C
Screening LevelCommercial
MountingThrough Hole
Width7.11mm (Max)
Height5.33mm (Max) - 0.38mm (Min)
Product Length26.92mm (Max)
Product TypeMicrocontroller

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