AT89C55WD-24PU The Atmel AT89C55WD-24PU is an 8-bit microcontroller featuring 20KB of Flash memory and 256 bytes of RAM. It operates at up to 24MHz and is housed in a 40-pin PDIP package.
Mfr Part #:

AT89C55WD-24PU

Available from 2 distributors
Mfr Name: Atmel
Atmel
The Atmel AT89C55WD-24PU is an 8-bit microcontroller featuring 20KB of Flash memory and 256 bytes of RAM. It operates at up to 24MHz and is housed in a 40-pin PDIP package.
Total Stock: 3,105 pcs
$ Price Range: $2.50

AT89C55WD-24PU Available from 2 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
3,015 pcs
3015 pcs On Request 1 On Request On Request 06+ On Request On Request
Non-Authorised Inventory information
90 pcs
90 pcs On Request 1 On Request On Request On Request On Request On Request

AT89C55WD-24PU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Access Time
Frequency
Halogen Free
Height
Interface
Length
Memory Size
Mounting Type
Operating Voltage
Oscillator Type
Peripherals
RAM Size
Termination Style
Watchdog Timer
Width

AT89C55WD-24PU Description

Short technical summary and product information.

The Atmel AT89C55WD-24PU is a high-performance, low-power CMOS 8-bit microcontroller based on the 8051 architecture. It offers 20KB of reprogrammable Flash memory, capable of enduring 10,000 write/erase cycles, and 256 bytes of internal RAM. This device operates within a voltage range of 4V to 5.5V and supports static operation from 0 Hz up to 33 MHz, with a typical operating frequency of 24 MHz.

 

Key features include 32 programmable I/O lines, three 16-bit timer/counters, and a programmable serial channel supporting UART and USART interfaces. It also incorporates an internal oscillator, a hardware watchdog timer, and low-power Idle and Power-down modes for energy efficiency. The microcontroller is designed for flexibility and cost-effectiveness in various embedded control applications.

 

The AT89C55WD-24PU is supplied in a 40-pin PDIP package suitable for through-hole mounting. Its operating temperature range is -40°C to 85°C. The device is RoHS compliant and offers a green packaging option.

AT89C55WD-24PU Quick Information

Product Type: Microcontroller
Series: 89C
Canonical Name: Atmel AT89C55WD-24PU 8-Bit Microcontroller
Subcategory: 8-Bit Microcontroller

AT89C55WD-24PU Compliance

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

AT89C55WD-24PU Estimated Pricing

Qty Low High
1+ $2.50 $2.50

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

AT89C55WD-24PU Features

  • 20KB reprogrammable Flash memory
  • 256 bytes internal RAM
  • 32 programmable I/O lines
  • 3x 16-bit timer/counters
  • 4V to 5.5V operating voltage range

AT89C55WD-24PU Applications

  • Suitable for embedded control applications.
  • Used in industrial automation systems.
  • Ideal for low-power IoT devices.
  • Applicable in consumer electronic products.
  • Suitable for serial communication interfaces.

AT89C55WD-24PU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the memory size of the AT89C55WD-24PU?

The AT89C55WD-24PU has 20KB of reprogrammable Flash memory.

How much RAM does the AT89C55WD-24PU have?

The AT89C55WD-24PU has 256 bytes of internal RAM.

What is the operating voltage range for the AT89C55WD-24PU?

The operating voltage range is 4V to 5.5V.

What package type is the AT89C55WD-24PU available in?

The AT89C55WD-24PU is available in a 40-pin PDIP package.

What is the maximum operating frequency of the AT89C55WD-24PU?

The AT89C55WD-24PU supports fully static operation from 0 Hz to 33 MHz.

Does the AT89C55WD-24PU have a watchdog timer?

Yes, the AT89C55WD-24PU has a hardware watchdog timer.

What are the available power saving modes?

The AT89C55WD-24PU supports low-power Idle and Power-down modes.

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