Specification	AT89C2051-12SU

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
Program Memory Size	2 KB
Program Memory Type	FLASH
RAM Size	128 x 8
Speed	12 MHz
Supplier Device Package	20-SOIC
Voltage - Supply (Vcc/Vdd) [Max]	6 V
Voltage - Supply (Vcc/Vdd) [Min]	2.7 V

AT89C2051 Series

Part	RAM Size	Program Memory Size	Oscillator Type	Speed	Peripherals	Mounting Type	Connectivity	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Core Processor	Package / Case	Package / Case [y]	Package / Case [y]	Program Memory Type	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Number of I/O	Core Size	Package / Case	Package / Case
Microchip Technology AT89C2051-24SI	128 x 8	2 KB	Internal	24 MHz	LED	Surface Mount	UART/USART	20-SOIC	85 °C	-40 °C	8051	20-SOIC	0.295 in	7.5 mm	FLASH	6 V	4 V	15	8-Bit
Microchip Technology AT89C2051-24SC	128 x 8	2 KB	Internal	24 MHz	LED	Surface Mount	UART/USART	20-SOIC	70 °C	0 °C	8051	20-SOIC	0.295 in	7.5 mm	FLASH	6 V	4 V	15	8-Bit
Microchip Technology AT89C2051-24SJ	128 x 8	2 KB	Internal	24 MHz	LED	Surface Mount	UART/USART	20-SOIC	85 °C	-40 °C	8051	20-SOIC	0.295 in	7.5 mm	FLASH	6 V	4 V	15	8-Bit
Microchip Technology AT89C2051-24PU	128 x 8	2 KB	Internal	24 MHz	LED	Through Hole	UART/USART	20-PDIP	85 °C	-40 °C	8051	20-DIP			FLASH	6 V	4 V	15	8-Bit	7.62 mm	0.3 in
Microchip Technology AT89C2051-12PI	128 x 8	2 KB	Internal	12 MHz	LED	Through Hole	UART/USART	20-PDIP	85 °C	-40 °C	8051	20-DIP			FLASH	6 V	4 V	15	8-Bit	7.62 mm	0.3 in
Microchip Technology AT89C2051-24SU	128 x 8	2 KB	Internal	24 MHz	LED	Surface Mount	UART/USART	20-SOIC	85 °C	-40 °C	8051	20-SOIC	0.295 in	7.5 mm	FLASH	6 V	4 V	15	8-Bit
Microchip Technology AT89C2051-12SI	128 x 8	2 KB	Internal	12 MHz	LED	Surface Mount	UART/USART	20-SOIC	85 °C	-40 °C	8051	20-SOIC	0.295 in	7.5 mm	FLASH	6 V	4 V	15	8-Bit
Microchip Technology AT89C2051-12SC	128 x 8	2 KB	Internal	12 MHz	LED	Surface Mount	UART/USART	20-SOIC	70 °C	0 °C	8051	20-SOIC	0.295 in	7.5 mm	FLASH	6 V	4 V	15	8-Bit
Microchip Technology AT89C2051-12SU	128 x 8	2 KB	Internal	12 MHz	LED	Surface Mount	UART/USART	20-SOIC	85 °C	-40 °C	8051	20-SOIC	0.295 in	7.5 mm	FLASH	6 V	2.7 V	15	8-Bit

Pricing

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

Distributor	Package	Quantity	$

Digikey	Bulk	194	$ 1.55
	Tube	1	$ 1.51
		25	$ 1.39
		100	$ 1.25
Microchip Direct	TUBE	1	$ 1.51
		25	$ 1.39
		100	$ 1.25
		1000	$ 1.16
		5000	$ 1.09
Newark	Each	100	$ 1.29

Description

General part information

AT89C2051 Series

Low-voltage, high-performance CMOS 8-bit microcomputer with 2KB of flash programmable and erasable read-only memory. The device is manufactured using Microchip high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set. This versatile 8-bit CPU with flash provides a highly flexible and cost-effective solution for many embedded control applications.

Documents

Technical documentation and resources

Product Change Notice EN

Datasheet

Technical Data Sheet EN

Datasheet