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AT89S51-24PC The AT89S51-24PC is an 8051-based 8-bit microcontroller from Microchip Technology with 4KB of Flash memory, 128 bytes of RAM, and a 24MHz core speed. It features 32 I/O lines, UART/USART connectivity, and a watchdog timer, housed in a 40-PDIP package.
Mfr Part #:

AT89S51-24PC

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The AT89S51-24PC is an 8051-based 8-bit microcontroller from Microchip Technology with 4KB of Flash memory, 128 bytes of RAM, and a 24MHz core speed. It features 32 I/O lines, UART/USART connectivity, and a watchdog timer, housed in a 40-PDIP package.
Total Stock: 7 pcs

AT89S51-24PC Available from 1 distributor

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AT89S51-24PC Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Flash Endurance
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
Voltage

AT89S51-24PC Description

Short technical summary and product information.

The AT89S51-24PC is a low-power, high-performance CMOS 8-bit microcontroller based on the industry-standard 8051 core. It integrates 4KB of in-system programmable Flash memory with 10,000 write/erase cycle endurance, 128 bytes of internal RAM, and 32 programmable I/O lines. The device operates at a supply voltage of 4V to 5.5V and supports a maximum speed of 24MHz (with datasheet indicating up to 33MHz).

 

Key peripherals include a full-duplex UART/USART serial channel, two 16-bit timer/counters, a watchdog timer (WDT), and six interrupt sources. The microcontroller also features low-power idle and power-down modes, with interrupt recovery from power-down. An internal oscillator eliminates the need for external clock components.

 

The AT89S51-24PC is housed in a 40-lead PDIP (plastic dual in-line package) with through-hole mounting, suitable for prototyping and industrial applications. Its operating temperature range is 0°C to 70°C. Common applications include industrial automation, consumer electronics, and medical devices.

AT89S51-24PC Quick Information

Product Type: Microcontroller
Series: 89S
Canonical Name: AT89S51-24PC 8051 Microcontroller
Subcategory: 8-bit Microcontrollers

AT89S51-24PC Compliance

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

AT89S51-24PC Features

  • 8051 core processor at 24MHz.
  • 4KB in-system programmable Flash memory.
  • 128 bytes of internal RAM.
  • 32 general-purpose I/O lines.
  • UART/USART serial communication.

AT89S51-24PC Applications

  • Industrial automation and control systems.
  • Consumer electronics products.
  • Medical device control applications.
  • Embedded control systems requiring 8-bit MCU.

AT89S51-24PC FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the AT89S51-24PC?

The supply voltage range is 4V to 5.5V.

What package does the AT89S51-24PC come in?

It comes in a 40-DIP (0.600", 15.24mm) package with through-hole mounting.

What is the operating temperature range?

The operating temperature range is 0°C to 70°C (TA).

Is the AT89S51-24PC RoHS compliant?

The part is listed as RoHS3 Compliant, but this is unverified and conflicts with manufacturer data.

What is the core processor and speed?

It features an 8051 core running at 24MHz.

How much program memory and RAM does it have?

It has 4KB of Flash program memory and 128 bytes of RAM.

How many I/O pins and what connectivity does it support?

It has 32 I/O pins and supports UART/USART serial communication.

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