AT89C51-20PC The AT89C51-20PC is an 8-bit microcontroller from Microchip Technology featuring 4KB of Flash memory and operating at 33MHz. It is housed in a 44-TQFP package.
Mfr Part #:

AT89C51-20PC

Available from 4 distributors
Mfr Name: Atmel
Atmel
The AT89C51-20PC is an 8-bit microcontroller from Microchip Technology featuring 4KB of Flash memory and operating at 33MHz. It is housed in a 44-TQFP package.
✓ Total Stock: 3,649 pcs
$ Price Range: $5.55

AT89C51-20PC Available from 4 distributors

✓ Authorised
✓ Non-Authorised

AT89C51-20PC Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Mounting Type
Operating Temperature
Oscillator Type
Program Memory Size
Program Memory Type
RAM Size
Speed
Storage Temperature
Tape & Reel

AT89C51-20PC Description

Short technical summary and product information.

The AT89C51-20PC is an 8-bit microcontroller based on the 80C51 core, manufactured by Microchip Technology. It offers 4KB of Flash program memory and 128 bytes of RAM, making it suitable for applications requiring basic control logic and moderate memory.

 

This microcontroller operates with a supply voltage ranging from 4V to 6V and supports an internal oscillator for clock generation, running at a speed of up to 33MHz. It features 32 I/O pins and standard UART/USART connectivity for communication.

 

The AT89C51-20PC is supplied in a 44-pin Thin Quad Flat Package (TQFP) with dimensions of 10mm x 10mm, designed for surface mounting. The operating temperature range is -40°C to +85°C.

 

This part is noted as obsolete, indicating it may be suitable for legacy systems or applications where cost-efficiency and reliable communication are key requirements.

AT89C51-20PC Quick Information

Product Type: Microcontroller
Series: 89C
Canonical Name: AT89C51-20PC 8-Bit Microcontroller
Subcategory: Embedded Microcontroller

AT89C51-20PC Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 3 (168 hours)
REACH Status: Unaffected

AT89C51-20PC Estimated Pricing

Qty Low High
1+ $5.55 $5.55

Estimated market price range - modelled values for guidance only, not live distributor offers.

AT89C51-20PC Features

  • 8-bit microcontroller with 80C51 core.
  • 4KB Flash program memory.
  • 128 Bytes RAM.
  • 33MHz clock speed.
  • 4V to 6V operating voltage.

AT89C51-20PC Applications

  • Suitable for embedded control applications
  • Used in industrial automation systems
  • Ideal for automotive electronics
  • Supports UART/USART connectivity

AT89C51-20PC FAQs

5 frequently asked questions generated from this part’s specifications.
What is the program memory size of the AT89C51-20PC?

The AT89C51-20PC has 4KB of Flash program memory.

What is the RAM size for the AT89C51-20PC microcontroller?

The AT89C51-20PC has 128 Bytes of RAM.

What is the operating voltage range for the AT89C51-20PC?

The AT89C51-20PC operates with a supply voltage between 4V and 6V.

What type of package is the AT89C51-20PC microcontroller in?

The AT89C51-20PC is supplied in a 44-TQFP package.

What is the operating temperature range for the AT89C51-20PC?

The AT89C51-20PC can operate in temperatures from -40°C to +85°C.

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