AT89C4051-12PU The AT89C4051-12PU is an 8-bit 8051 microcontroller with 4KB Flash memory, 128B RAM, and a 12MHz core frequency. It features 15 I/O lines, UART connectivity, and an on-chip analog comparator in a 20-DIP through-hole package.
Mfr Part #:

AT89C4051-12PU

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The AT89C4051-12PU is an 8-bit 8051 microcontroller with 4KB Flash memory, 128B RAM, and a 12MHz core frequency. It features 15 I/O lines, UART connectivity, and an on-chip analog comparator in a 20-DIP through-hole package.
✓ Total Stock: 20,536 pcs

AT89C4051-12PU Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
20,536 pcs
20536 pcs On Request 1 On Request On Request 2020+ On Request On Request

AT89C4051-12PU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Lead Spacing
Lead Style
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
SVHC Present
Speed
Supplier Device Package
Tape & Reel
Voltage

AT89C4051-12PU Description

Short technical summary and product information.

The AT89C4051-12PU is a low-voltage, high-performance CMOS 8-bit microcontroller from Microchip Technology, based on the industry-standard 8051 core. It integrates 4KB of reprogrammable Flash memory with 10,000 write/erase cycles endurance and 128 bytes of internal RAM.

 

Operating from 2.7V to 6V and running at up to 12MHz, this device includes 15 programmable I/O lines, two 16-bit timer/counters, a full-duplex UART serial port, six interrupt sources, and an on-chip analog comparator. Additional peripherals include brown-out detection, power-on reset, and direct LED drive outputs.

 

The AT89C4051-12PU is supplied in a 20-pin DIP (0.300", 7.62mm) package with through-hole mounting, suitable for breadboard prototyping and industrial applications. It supports low-power Idle and Power-down modes for energy-sensitive designs.

AT89C4051-12PU Quick Information

Product Type: Microcontroller
Series: AT89C4051
Canonical Name: AT89C4051-12PU 8-bit Microcontroller
Subcategory: 8051 MCU

AT89C4051-12PU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

AT89C4051-12PU Features

  • 8-bit 8051 core with 12MHz operation.
  • 4KB Flash memory with 10K write/erase cycles.
  • 128 bytes internal RAM and 15 I/O lines.
  • UART serial interface and on-chip analog comparator.
  • 2.7V to 6V supply range with low-power modes.

AT89C4051-12PU Applications

  • Ideal for embedded control and automation systems.
  • Used in consumer electronics and industrial controllers.
  • Suitable for LED driving and sensor interface designs.
  • Applicable in low-power battery-operated devices.
  • Common in educational and prototyping projects.

AT89C4051-12PU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the AT89C4051-12PU?

The AT89C4051-12PU operates from 2.7V to 6V DC.

What is the operating temperature range of the AT89C4051-12PU?

The operating temperature range is -40°C to 85°C (TA).

What package does the AT89C4051-12PU come in?

The AT89C4051-12PU is available in a 20-DIP (0.300", 7.62mm) through-hole package.

How much Flash memory does the AT89C4051-12PU have?

It has 4KB (4K x 8) of Flash program memory.

What is the core processor of the AT89C4051-12PU?

The core processor is an 8051 8-bit CPU.

Does the AT89C4051-12PU have a UART interface?

Yes, it includes a UART/USART serial interface.

How many I/O pins does the AT89C4051-12PU have?

It has 15 programmable I/O lines.

Home
Account

Categories