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

View all Microcontrollers

Subtotal (1 pack of 2 units)*

£6.82

(exc. VAT)

£8.18

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • 296 unit(s) ready to ship
  • Plus 999,999,702 unit(s) shipping from 27 November 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
Per Pack*
2 +£3.41£6.82

*price indicative

Packaging Options:
RS Stock No.:
127-6627
Mfr. Part No.:
AT89C55WD-24JU
Brand:
Microchip
Find similar products by selecting one or more attributes.
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 CAN Channels

0

Number of UART Channels

1

Number of ADC Units

0

Number of Ethernet Channels

0

Program Memory Type

Flash

Maximum Number of Ethernet Channels

0

Pulse Width Modulation

0

Dimensions

16.66 x 16.66 x 4.06mm

Maximum Operating Temperature

+85 °C

Length

16.66mm

Height

4.06mm

Instruction Set Architecture

CISC

Minimum Operating Temperature

-40 °C

ADCs

0

Width

16.66mm

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.


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

Related links