Mfr Part #:

AT89S52-24AU

8-bit microcontroller based on 8051 core with 8KB Flash memory and 256B RAM. Operates at up to 24MHz with 32 I/O lines and UART/USART connectivity.

✓ Total Stock: 56,851 pcs

AT89S52-24AU Available from 4 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	35,451 pcs On Request	35451 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Components Technology Group, Inc. ✓ Non-Authorised Inventory information	9,600 pcs On Request	9600 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Smaxon Electronics ✓ Non-Authorised Inventory information	8,200 pcs On Request	8200 pcs	On Request	1	On Request	On Request	20+	On Request	On Request
Optech Co.,Limited ✓ Non-Authorised Inventory information	3,600 pcs On Request	3600 pcs	On Request	1	On Request	On Request	24+	On Request	On Request

AT89S52-24AU Description

Short technical summary and product information.

The AT89S52-24AU is an 8-bit microcontroller from Microchip Technology based on the industry-standard 8051 core. It features 8KB of in-system programmable Flash memory and 256 bytes of internal RAM, providing a flexible platform for embedded control applications. The device operates at a maximum clock speed of 24MHz and includes 32 programmable I/O lines, a full-duplex UART serial channel, and a watchdog timer for reliable operation.

Designed for a supply voltage range of 4V to 5.5V, the microcontroller can function across an extended temperature range of -40°C to 85°C, making it suitable for industrial environments. It incorporates an internal oscillator and supports low-power idle and power-down modes to conserve energy when full processing is not required.

The AT89S52-24AU is packaged in a 44-TQFP (10x10mm) surface-mount package, ideal for space-constrained designs. Its 8051 compatibility and rich peripheral set enable straightforward integration into a wide variety of embedded systems, from consumer electronics to industrial automation.

AT89S52-24AU Quick Information

Product Type: Microcontroller

Series: 89S

Canonical Name: AT89S52-24AU 8-bit Microcontroller

Subcategory: 8-bit Microcontroller

AT89S52-24AU Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

AT89S52-24AU Features

8-bit 8051 core microcontroller.
8KB in-system programmable Flash memory.
256 bytes internal RAM.
32 programmable I/O lines.
Operates from 4V to 5.5V supply.

AT89S52-24AU Applications

Embedded control and automation systems.
Industrial and consumer electronics.
IoT sensor nodes and data loggers.
Motor control and interface applications.

AT89S52-24AU FAQs

7 frequently asked questions generated from this part’s specifications.

What is the supply voltage range?

4V to 5.5V.

What is the package type?

44-TQFP (10x10mm).

What is the operating temperature range?

-40°C to 85°C.

Is the AT89S52-24AU RoHS compliant?

Yes, RoHS3 compliant (unverified).

What core processor does it use?

8051 8-bit core.

What is the maximum clock speed?

24MHz.

How much Flash and RAM does it have?

8KB Flash and 256 bytes RAM.

AT89S52-24AU Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.

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AT89S52-24AUR

Microchip Technology

AT89S52-24AUR is an 8-bit microcontroller based on the 8051 core with 8KB Flash memory and 256B RAM. It operates at 24MHz and comes in a 44-TQFP package.

View Part

AT89S52-24AI