Integrated Circuits (ICs)

AT89C55WD-24AC

Obsolete

Microchip Technology

IC MCU 8BIT 20KB FLASH 44TQFP

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Integrated Circuits (ICs)

AT89C55WD-24AC

Obsolete

Microchip Technology

IC MCU 8BIT 20KB FLASH 44TQFP

Deep-Dive with AI

DocumentsDatasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	AT89C55WD-24AC

Connectivity	UART/USART
Core Processor	8051
Core Size	8-Bit
Mounting Type	Surface Mount
Number of I/O	32
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Oscillator Type	Internal
Package / Case	44-TQFP
Peripherals	WDT
Program Memory Size	20 KB
Program Memory Type	FLASH
RAM Size	256 x 8
Speed	24 MHz
Supplier Device Package	44-TQFP (10x10)
Voltage - Supply (Vcc/Vdd) [Max]	5.5 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

AT89C55WD Series

Part	Package / Case	Package / Case	Package / Case	Connectivity	Oscillator Type	Core Processor	Program Memory Size	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Core Size	Speed	Peripherals	Mounting Type	Number of I/O	Supplier Device Package	RAM Size	Operating Temperature [Max]	Operating Temperature [Min]	Program Memory Type
Microchip Technology AT89C55WD-24PC	15.24 mm	0.6 in	40-DIP	UART/USART	Internal	8051	20 KB	5.5 V	4.5 V	8-Bit	24 MHz	WDT	Through Hole	32	40-PDIP	256 x 8	70 °C	0 °C	FLASH
Microchip Technology AT89C55WD-24JC			44-LCC (J-Lead)	UART/USART	Internal	8051	20 KB	5.5 V	4.5 V	8-Bit	24 MHz	WDT	Surface Mount	32	44-PLCC (16.6x16.6)	256 x 8	70 °C	0 °C	FLASH
Microchip Technology AT89C55WD-24PI	15.24 mm	0.6 in	40-DIP	UART/USART	Internal	8051	20 KB	5.5 V	4.5 V	8-Bit	24 MHz	WDT	Through Hole	32	40-PDIP	256 x 8	85 °C	-40 °C	FLASH
Microchip Technology AT89C55WD-24PU	15.24 mm	0.6 in	40-DIP	UART/USART	Internal	8051	20 KB	5.5 V	4.5 V	8-Bit	24 MHz	WDT	Through Hole	32	40-PDIP	256 x 8	85 °C	-40 °C	FLASH
Microchip Technology AT89C55WD-24JU			44-LCC (J-Lead)	UART/USART	Internal	8051	20 KB	5.5 V	4.5 V	8-Bit	24 MHz	WDT	Surface Mount	32	44-PLCC (16.6x16.6)	256 x 8	85 °C	-40 °C	FLASH
Microchip Technology AT89C55WD-24JI			44-LCC (J-Lead)	UART/USART	Internal	8051	20 KB	5.5 V	4.5 V	8-Bit	24 MHz	WDT	Surface Mount	32	44-PLCC (16.6x16.6)	256 x 8	85 °C	-40 °C	FLASH
Microchip Technology AT89C55WD-24AC			44-TQFP	UART/USART	Internal	8051	20 KB	5.5 V	4.5 V	8-Bit	24 MHz	WDT	Surface Mount	32	44-TQFP (10x10)	256 x 8	70 °C	0 °C	FLASH

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Description

General part information

AT89C55WD Series

Low-power, high-performance CMOS 8-bit microcontroller with 20KB of flash programmable ROM and 256 bytes of RAM. The device is manufactured using Microchip high-density nonvolatile memory technology and is compatible with the industry standard 80C51 and 80C52 instruction set and pinout. On-chip flash allows the program memory to be user programmed by a conventional nonvolatile memory programmer.

This versatile 8-bit CPU with flash is a highly flexible and cost-effective solution for many embedded control applications.

Documents

Technical documentation and resources