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See Technical Specifications

25AA256-I/ST

Twenty-five AA256-I/ST is a 32K X 8 bit memory storage device with a total capacity of 256K bits suitable for a wide range of applications

Manufacturer:

Microchip
Mfr.Part #:

25AA256-I/ST
Datasheet:

25AA256-I/ST Datasheet (PDF)
Density (Organization):

256 Kbit
Operating Voltage Min. (V):

1.8
Oper Voltage Max (V):

5.5
Max. Clock Freq.:

10 MHz
EDA/CAD Models:

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25AA256-I/ST General Description

The 25AA256-I/ST is a 256Kbit SPI bus serial EEPROM with a wide operating voltage range of 1.8V to 5.5V. It offers a fast clock speed of up to 10MHz and a low operating current of just 5mA at 5V. The device is housed in a standard 8-pin SOIC package, making it suitable for a wide range of applications.It features a flexible write protection scheme with a software write protection enable and a hardware write protection pin. The EEPROM also has a 64-byte page write buffer for efficient read and write operations. Additionally, the 25AA256-I/ST has a high endurance of 1 million write cycles and a data retention period of over 200 years.

Key Features

The 25AA256-I/ST is a serial EEPROM memory chip with a capacity of 256 kilobits

It features SPI interface, 64-byte page size, and a wide voltage range from 1

8V to 5

It supports high-speed clock frequencies up to 10 MHz and has a write protect pin for security

Application

The 25AA256-I/ST is commonly used in various applications requiring non-volatile storage of data, such as automotive electronics, industrial automation, medical devices, and consumer electronics

It's suitable for storing configuration data, program code, and other critical information in embedded systems where space, power consumption, and reliability are important factors

Specifications

Density (Organization)	256 Kbit	Operating Voltage Min. (V)	1.8
Oper Voltage Max (V)	5.5	Max. Clock Freq.	10 MHz
Page Size (bytes)	64	Write Protected	False
Write Protect Scheme	Quarter, Half, Whole Array	Endurance	1,000,000
Data Retention (Years)	0	Bus Modes	SPI
Battery Backup	False