Integrated Circuits (ICs) > Embedded Processors and Controllers > Microcontrollers > AT89C55WD-24JU

AT89C55WD-24JU

Microchip

Part Number:	AT89C55WD-24JU
Manufacturer:	Microchip
Part Type:	Integrated Circuits (ICs) > Embedded Processors and Controllers > Microcontrollers > AT89C55WD-24JU
Qty Available:
Description:	Microcontroller AT89, 8 Bit 80C51, 24MHZ, Flash 20KB, SRAM 256B, 4-5.5V, -40+85DEG.C, PLCC44

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04/23/2026 – There are 515 pieces pieces of Part Number AT89C55WD-24JU Available.

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Microcontroller AT89, 8 Bit 80C51, 24MHZ, Flash 20KB, SRAM 256B, 4-5.5V, -40+85DEG.C, PLCC44

Specifications

TYPE	DESCRIPTION
Case/Package	PLCC
Mount	Surface Mount
Number of Pins	44
Access Time	24 µs
Address Bus Width	8 b
Core Architecture	8051
Data Bus Width	8 b
Frequency	24 MHz
Interface	UART
Max Frequency	24 MHz
Max Operating Temperature	85 °C
Max Supply Voltage	5.5 V
Memory Size	20 kB
Memory Type	FLASH
Min Operating Temperature	-40 °C
Min Supply Voltage	4 V
Number of I/Os	32
Number of Programmable I/O	32
Number of Timers/Counters	3
Number of UART Channels	1
Operating Supply Voltage	5 V
Oscillator Type	Internal
Peripherals	WDT
RAM Size	256 B
Schedule B	8542310000
Watchdog Timer	Yes
Height	4.064 mm
Length	16.66 mm
Width	16.662 mm