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25LC256T-I/ST

Name: 25LC256T-I/ST
Rating: 4.7 (12 reviews)

IC EEPROM 256KBIT SPI 8TSSOP

Производитель
Мфр. Часть #25LC256T-I/ST
Пакет
Лист данных 25LC256T-I/ST DataSheet
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Спецификации

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	SPI
Write Cycle Time - Word, Page	5ms
Voltage - Supply	2.5V ~ 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	25LC256
Clock Frequency	10 MHz

Обзор

Description

The 25LC256T-I/ST is a 256Kb (32KB) Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) from Microchip Technology. It utilizes the SPI (Serial Peripheral Interface) protocol for communication, allowing for fast data transfer rates up to 20 MHz. The device is organized as 32 pages of 256 bytes each, providing efficient memory management.
Key features include a wide voltage range of 2.5V to 5.5V, low power consumption, and support for multiple devices on the same bus. It also offers a write protection feature, ensuring data integrity during critical operations. The 25LC256T-I/ST is available in various package options, including SOIC and TSSOP, making it suitable for diverse applications, such as data logging, configuration storage, and firmware updates in consumer electronics and industrial devices.
This EEPROM is designed for ease of use, with a simple command set for read, write, and erase operations, making it an ideal choice for applications requiring non-volatile data storage.

Features

The 25LC256T-I/ST is a 256 Kbit (32 K x 8) Serial EEPROM featuring the following key characteristics:
1. Interface: SPI (Serial Peripheral Interface), supporting multiple modes.
2. Voltage Range: Operates from 2.5V to 5.5V, making it suitable for various applications.
3. Speed: Maximum clock frequency of 20 MHz for fast data transfer.
4. Memory Organization: 32 pages of 64 bytes each, allowing efficient data management.
5. Write Endurance: Endurance of 1,000,000 write cycles per byte.
6. Data Retention: Data retention of up to 100 years at 25°C.
7. Power Consumption: Low power consumption with a typical read current of 1 mA and write current of 5 mA.
8. Temperature Range: Industrial-grade temperature range from -40°C to 85°C.
9. Packages: Available in various packages, including SOIC, DFN, and TSSOP.
This EEPROM is ideal for applications requiring reliable non-volatile storage, such as consumer electronics, automotive, and industrial devices.

Package

The 25LC256T-I/ST is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) format. It features a small footprint suitable for surface mount applications.

Pinout

The 25LC256T-I/ST is a 256 Kbit serial EEPROM (Electrically Erasable Programmable Read-Only Memory) that communicates via the SPI (Serial Peripheral Interface) protocol. It has a total of 8 pins.
Here are the pin functions:
1. VCC: Power supply pin (typically 2.5V to 5.5V).
2. GND: Ground connection.
3. SCK: Serial Clock input for SPI communication.
4. SI: Serial Data Input; used for writing data to the memory.
5. SO: Serial Data Output; used for reading data from the memory.
6. CS: Chip Select; active low signal to enable the device.
7. WP: Write Protect; used to protect against unintentional writes.
8. HOLD: Hold; used to pause communication without resetting the clock.
This device is frequently used in applications requiring non-volatile storage, such as data logging and configuration settings.

Manufacturer

The manufacturer of the 25LC256T-I/ST is Microchip Technology Inc. Microchip is a leading provider of embedded control solutions, specializing in microcontrollers, memory, and analog semiconductors. Founded in 1989, the company focuses on developing products for a wide range of applications, including automotive, industrial, consumer, and communications markets. Microchip is well-known for its commitment to innovation and customer support, offering a comprehensive suite of development tools and resources to assist engineers in their design processes. The 25LC256T-I/ST specifically is a 256 Kbit (32K x 8) serial EEPROM, commonly used for data storage in various electronic devices.

Application

The 25LC256T-I/ST is a 256 Kbit (32 Kbyte) serial EEPROM primarily used in applications such as data storage, configuration settings, and firmware storage in embedded systems. Common areas include consumer electronics, automotive systems, industrial controls, medical devices, and smart meters, where non-volatile memory is required for storing critical data that must persist after power loss. Its SPI interface allows for fast data access, making it suitable for high-performance applications.

Equivalent

The 25LC256T-I/ST chip is a 256Kb serial EEPROM. Equivalent products include the Microchip 25AA256, Winbond W25X256, and STMicroelectronics M25P256. These alternatives typically share similar specifications, including memory size and communication protocols (SPI). Always verify specific characteristics such as voltage range and speed for compatibility.

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