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24AA256T-I/ST

Name: 24AA256T-I/ST
Rating: 4.7 (12 reviews)

IC EEPROM 256KBIT I2C 8TSSOP

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資料表 24AA256T-I/ST DataSheet
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規格

Part Status	Active
DigiKey Programmable	Verified
Memory Type	Non-Volatile
Memory Format	EEPROM
Technology	EEPROM
Memory Size	256Kbit
Memory Organization	32K x 8
Memory Interface	I2C
Write Cycle Time - Word, Page	5ms
Voltage - Supply	1.7V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package	8-TSSOP
Base Product Number	24AA256
Clock Frequency	400 kHz
Access Time	900 ns

概述

Description

The 24AA256T-I/ST is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chip produced by Microchip Technology. It features a 256 Kbit (32 Kbytes) memory capacity, organized in 32 pages of 64 bytes each. The device communicates via the I2C (Inter-Integrated Circuit) protocol, allowing multiple devices to be connected on the same bus, making it ideal for applications requiring multiple memory devices.
Key features include:
- Operating voltage range: 1.7V to 5.5V.
- Write protection through hardware and software mechanisms.
- Endurance of 1 million write cycles and a data retention period of 100 years.
- Fast data transfer rates, up to 1 MHz in Fast mode.
The 24AA256T-I/ST is widely used in applications such as consumer electronics, automotive systems, and industrial equipment for data logging and configuration storage due to its reliability and compact footprint. The "I" in the model name indicates the industrial temperature range, while "ST" refers to the package type (TSSOP).

Features

The 24AA256T-I/ST is a 256 Kbit I2C-compatible EEPROM (Electrically Erasable Programmable Read-Only Memory) device. Key features include:
- Memory Size: 256 Kbits (32 KB).
- Interface: I2C (Inter-Integrated Circuit) protocol, allowing multiple devices on the same bus.
- Voltage Range: Operates between 1.8V to 5.5V, making it suitable for low-voltage applications.
- Data Rate: Supports standard mode (100 kHz) and fast mode (400 kHz) communication.
- Page Write: 16 bytes at a time for efficient data writing.
- Endurance: Typically rated for 1 million write cycles and a data retention of 100 years.
- Package Options: Available in various packages, including SOIC, TSSOP, and MSOP, for design flexibility.
- Built-in Write Protection: Features such as hardware write protection on specific pins to safeguard data.
This device is commonly used in applications requiring non-volatile memory such as data storage, configuration settings, and firmware updates.

Package

The 24AA256T-I/ST is packaged in an 8-lead MSOP (Mini Small Outline Package) or an 8-lead SOIC (Small Outline Integrated Circuit) format. It is designed for surface-mount applications and provides EEPROM memory with I2C interface capabilities.

Pinout

The 24AA256T-I/ST is a 256 Kbit (32 Kbyte) I2C EEPROM. It comes in an 8-pin SOIC (Small Outline Integrated Circuit) package.
Pin Count and Functions:
1. VCC (Pin 1): Power supply pin (typically 2.5V to 5.5V).
2. GND (Pin 2): Ground reference.
3. SDA (Pin 3): Serial Data Line for data transfer (I2C data).
4. SCL (Pin 4): Serial Clock Line for synchronization (I2C clock).
5. WP (Pin 5): Write Protect pin; if connected to VCC, it protects the memory from being written to.
6. A0 (Pin 6): Chip Select pin; used for addressing multiple devices on the same I2C bus.
7. A1 (Pin 7): Additional Chip Select pin; further expands addressing capability.
8. A2 (Pin 8): Additional Chip Select pin; also used for addressing.
This configuration allows the chip to interface with microcontrollers using the I2C protocol for read/write operations.

Manufacturer

The manufacturer of the 24AA256T-I/ST is Microchip Technology Inc. Microchip is a leading provider of microcontroller, mixed-signal, analog, and flash-IP solutions. Founded in 1989 and headquartered in Chandler, Arizona, the company specializes in developing microcontrollers and integrated circuits for a variety of applications, including automotive, industrial, consumer, and communications. Microchip is known for its commitment to innovation and quality, providing a wide range of products and development tools that enable engineers to design and bring their projects to market efficiently. The 24AA256T-I/ST is a 256K I2C EEPROM (Electrically Erasable Programmable Read-Only Memory) used in various embedded systems for data storage.

Application

The 24AA256T-I/ST is a 256 Kbit I2C EEPROM used in various applications, including data storage for microcontrollers, non-volatile memory in consumer electronics, industrial automation systems, medical devices, and automotive systems. It is ideal for applications requiring reliable data retention, such as configuration settings, calibration data, and small data logging.

Equivalent

The 24AA256T-I/ST chip is a 256 Kbit I2C EEPROM. Equivalent products include:
1. 24LC256 - Similar functionality and specifications but may differ in power consumption.
2. AT24C256 - From Microchip, offering similar memory capacity and I2C interface.
3. M24C256 - Another alternative from STMicroelectronics with the same memory size.
Always verify pin configurations and electrical characteristics before substituting.