Specification	AT89C4051-24SU

Connectivity	UART/USART
Core Processor	8051
Core Size	8-Bit
Mounting Type	Surface Mount
Number of I/O	15
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Oscillator Type	Internal
Package / Case	20-SOIC
Package / Case [y]	0.295 in
Package / Case [y]	7.5 mm
Peripherals	LED, Brown-out Detect/Reset, POR
Program Memory Size	4 KB
Program Memory Type	FLASH
RAM Size	128 x 8
Speed	24 MHz
Supplier Device Package	20-SOIC
Voltage - Supply (Vcc/Vdd) [Max]	6 V
Voltage - Supply (Vcc/Vdd) [Min]	4 V

AT89C4051 Series

Part	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case	Package / Case	Core Size	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Supplier Device Package	Program Memory Type	Number of I/O	Speed	Mounting Type	Connectivity	Peripherals	Oscillator Type	Program Memory Size	Core Processor	RAM Size	Package / Case [y]	Package / Case [y]
Microchip Technology AT89C4051-12PU	85 °C	-40 °C	20-DIP	7.62 mm	0.3 in	8-Bit	6 V	2.7 V	20-PDIP	FLASH	15	12 MHz	Through Hole	UART/USART	Brown-out Detect/Reset LED POR	Internal	4 KB	8051	128 x 8
Microchip Technology AT89C4051-12SI	85 °C	-40 °C	20-SOIC			8-Bit	6 V	4 V	20-SOIC	FLASH	15	12 MHz	Surface Mount	UART/USART	Brown-out Detect/Reset LED POR	Internal	4 KB	8051	128 x 8	0.295 in	7.5 mm
Microchip Technology AT89C4051-24SC	70 °C	0 °C	20-SOIC			8-Bit	6 V	4 V	20-SOIC	FLASH	15	24 MHz	Surface Mount	UART/USART	Brown-out Detect/Reset LED POR	Internal	4 KB	8051	128 x 8	0.295 in	7.5 mm
Microchip Technology AT89C4051-24PC	70 °C	0 °C	20-DIP	7.62 mm	0.3 in	8-Bit	6 V	4 V	20-PDIP	FLASH	15	24 MHz	Through Hole	UART/USART	Brown-out Detect/Reset LED POR	Internal	4 KB	8051	128 x 8
Microchip Technology AT89C4051-12SU	85 °C	-40 °C	20-SOIC			8-Bit	6 V	2.7 V	20-SOIC	FLASH	15	12 MHz	Surface Mount	UART/USART	Brown-out Detect/Reset LED POR	Internal	4 KB	8051	128 x 8	0.295 in	7.5 mm
Microchip Technology AT89C4051-24SI	85 °C	-40 °C	20-SOIC			8-Bit	6 V	4 V	20-SOIC	FLASH	15	24 MHz	Surface Mount	UART/USART	Brown-out Detect/Reset LED POR	Internal	4 KB	8051	128 x 8	0.295 in	7.5 mm
Microchip Technology AT89C4051-24PI	85 °C	-40 °C	20-DIP	7.62 mm	0.3 in	8-Bit	6 V	4 V	20-PDIP	FLASH	15	24 MHz	Through Hole	UART/USART	Brown-out Detect/Reset LED POR	Internal	4 KB	8051	128 x 8
Microchip Technology AT89C4051-24SU	85 °C	-40 °C	20-SOIC			8-Bit	6 V	4 V	20-SOIC	FLASH	15	24 MHz	Surface Mount	UART/USART	Brown-out Detect/Reset LED POR	Internal	4 KB	8051	128 x 8	0.295 in	7.5 mm
Microchip Technology AT89C4051-12PC	70 °C	0 °C	20-DIP	7.62 mm	0.3 in	8-Bit	6 V	4 V	20-PDIP	FLASH	15	12 MHz	Through Hole	UART/USART	Brown-out Detect/Reset LED POR	Internal	4 KB	8051	128 x 8

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 1.49
		25	$ 1.37
		100	$ 1.22
Microchip Direct	TUBE	1	$ 1.49
		25	$ 1.37
		100	$ 1.22
		1000	$ 1.13
		5000	$ 1.08
Newark	Each	100	$ 1.26

Description

General part information

AT89C4051 Series

Compatible with MCS®51 Products

4K Bytes of Reprogrammable Flash MemoryEndurance: 10,000 Write/Erase Cycles

Endurance: 10,000 Write/Erase Cycles

Documents

Technical documentation and resources

AT89C4051-24SU

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AT89C4051-24SU

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Technical Specifications

AT89C4051 Series

Pricing

Description

AT89C4051 Series

Documents

Analyzing the Behavior of an Oscillator and Ensuring Good Start-up

Design Guide for 8051 Standard Devices

AT89C4051 - Complete Datasheet

Program Examples for 8051 Timers

Migrating from AT89C51/C52 to AT89S51/S52

Program Examples for 8051 UART

Product Change Notice EN

AT89C4051 Series