MPN

Microchip, 8bit 8051, AT89 Microcontroller, 24MHz, 20 kB Flash, 44-Pin PLCC

RS Stock No.:: 127-6627
Mfr. Part No.:: AT89C55WD-24JU
Brand:: Microchip

Microchip, 8bit 8051, AT89 Microcontroller, 24MHz, 20 kB Flash, 44-Pin PLCC

Bulk discount available

Subtotal (1 pack of 2 units)*

$15.23

(exc. GST)

$16.752

(inc. GST)

FREE delivery for orders over $60.00 ex GST

In Stock

Plus 296 unit(s) shipping from 08 December 2025

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit	Per Pack*
2 - 8	$7.615	$15.23
10 - 48	$7.44	$14.88
50 - 98	$7.265	$14.53
100 +	$7.09	$14.18

*price indicative

RS Stock No.:: 127-6627
Mfr. Part No.:: AT89C55WD-24JU
Brand:: Microchip

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Microchip
	Family Name	AT89
	Package Type	PLCC
	Mounting Type	Surface Mount
	Pin Count	44
	Device Core	8051
	Data Bus Width	8bit
	Program Memory Size	20 kB
	Maximum Frequency	24MHz
	RAM Size	256 B
	USB Channels	0
	Number of PWM Units	0
	Number of SPI Channels	0
	Typical Operating Supply Voltage	4 → 5.5 V
	Number of UART Channels	1
	Number of CAN Channels	0
	Maximum Number of Ethernet Channels	0
	Instruction Set Architecture	CISC
	ADCs	0
	Length	16.66mm
	Minimum Operating Temperature	-40 °C
	Number of ADC Units	0
	Program Memory Type	Flash
	Maximum Operating Temperature	+85 °C
	Number of Ethernet Channels	0
	Height	4.06mm
	Width	16.66mm
	Dimensions	16.66 x 16.66 x 4.06mm
	Pulse Width Modulation	0

	Select all
	Brand Microchip
	Family Name AT89
	Package Type PLCC
	Mounting Type Surface Mount
	Pin Count 44
	Device Core 8051
	Data Bus Width 8bit
	Program Memory Size 20 kB
	Maximum Frequency 24MHz
	RAM Size 256 B
	USB Channels 0
	Number of PWM Units 0
	Number of SPI Channels 0
	Typical Operating Supply Voltage 4 → 5.5 V
	Number of UART Channels 1
	Number of CAN Channels 0
	Maximum Number of Ethernet Channels 0
	Instruction Set Architecture CISC
	ADCs 0
	Length 16.66mm
	Minimum Operating Temperature -40 °C
	Number of ADC Units 0
	Program Memory Type Flash
	Maximum Operating Temperature +85 °C
	Number of Ethernet Channels 0
	Height 4.06mm
	Width 16.66mm
	Dimensions 16.66 x 16.66 x 4.06mm
	Pulse Width Modulation 0

8051 Architecture Flash (Reprogrammable) Microcontrollers

Atmel offers 8051 reprogrammable flash microcontrollers with programmable and erasable read-only memory, using high-density non-volatile memory technology.

For these non-cancellable (NC), and non-returnable (NR) products, Terms and Conditions apply.

8051 Architecture Microcontrollers

Atmel's 8-bit microcontrollers (MCUs) based on the 8051 instruction set, combine proven technology with the latest features and functionality, with all featuring advanced flash memory.

Device Family

Single Cycle Core
Flash ISP (In-System Programmable)
Flash (Reprogrammable)
CAN Networking MCUs
USB MCUs
ROMless

Microchip, 8bit 8051, AT89 Microcontroller, 24MHz, 20 kB Flash, 44-Pin PLCC

FREE delivery for orders over $60.00 ex GST

8051 Architecture Flash (Reprogrammable) Microcontrollers

For these non-cancellable (NC), and non-returnable (NR) products, Terms and Conditions apply.

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