24AA256T-E/SM

Write Cycle Time - Word, Page:	5ms
Base Part Number:	24AA256
Supplier Device Package:	8-SOIJ
Package / Case:	8-SOIC (0.209", 5.30mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Voltage - Supply:	1.7 V ~ 5.5 V
Memory Interface:	I²C
Access Time:	900ns
Series:	--
Clock Frequency:	400kHz
Memory Size:	256Kb (32K x 8)
Technology:	EEPROM
Memory Format:	EEPROM
Memory Type:	Non-Volatile
Part Status:	Active
Packaging:	Tape & Reel (TR)

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24AA256T-E/SM is a member of the family of Serial Electrically Erasable and Programmable Read-Only Memory (EEPROM) devices. It offers an unlimited read and write cycle endurance and data retention of up to 10 years. The EEPROM is ideal for storing a wide range of data and parameters, such as small amount of code and data, digital trimming, configuration settings and identification numbers. This article will focus on the application field and working principle of 24AA256T-E/SM.

Application Fields

24AA256T-E/SM EEPROMs are ideal for the wide range of applications, such as consumer electronics, medical, automotive and industrial. The device is designed to provide a robust solution for storing critical configuration data, board identification and system parameters in high-end industrial, consumer and automotive applications.For consumer electronic applications, 24AA256T-E/ SM EEPROMs provide a robust solution for storing remote control codes, firmware and various device settings. In automotive applications, it is used for storing diagnostics data, system parameters and identification numbers. In the medical field, it is often used for storing control and system parameters, calibration data and configuration settings. In addition, it is ideal for industrial applications such as factory process automation and factory equipment control.

Working Principle

The 24AA256T-E/SM EEPROM operates in a serial mode, with all communication channels arranged in a single, bi-directional data stream. The device comes in a variety of packages and pinouts, with capacities ranging from 256Kbits to 1 Mbit.The 24AA256T-E/SM consists of an array of memory cells, logic and control circuitry. The memory cells are divided into blocks of 512 bytes per segment, allowing for a wide range of data storage. The control circuit provides the write and read functions, as well as erase and protect functions.The data can be accessed and written through the 24AA256T-E/SM’s two-wire interface, in either serial or parallel mode. The device operates on a low-voltage VCC power supply, with a maximum current consumption of 2.5mA, and is powered by an internal voltage regulator.In order to write data, the 24AA256T-E/SM requires a low-voltage (5V) VCC, providing a safe and regulated write voltage. In order to protect the content of the memory, the device features a “Protect” pin. This pin needs to be held low in order to write the data.The data can be read from the 24AA256T-E/SM in either serial or parallel mode. The data is sent from the device in “blocks” of 512 bytes in a variety of baud rates, including 9600, 19200 and 38400 bps.The 24AA256T-E/SM also features an Acknowledge (ACK) pin, allowing the interface to “know” when the device has received and acknowledged the transmitted data. The device is also protected with an Error Detection and Correction (ED&C) system, preserving the integrity of the data during transmission.In summary, the 24AA256T-E/SM is a robust and reliable Serial Electrically Erasable and Programmable Read-Only Memory designed for industrial, automotive and consumer electronic applications, with unlimited write and read cycles and 10 years of excellent data retention. It is an ideal solution for protecting, storing and retrieving important data and configuration settings.

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