25LC256-I/SN

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25LC256-I/SN

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IC EEPROM 256KBIT SPI 8SOIC

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Especificações

Atributo Valor
Package Tube
ProductStatus Active
MemoryType Non-Volatile
MemoryFormat EEPROM
Technology EEPROM
MemorySize 256Kb (32K x 8)
MemoryInterface SPI
ClockFrequency 10 MHz
WriteCycleTime-WordPage 5ms
Voltage-Supply 2.5V ~ 5.5V
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

Visão Geral

Description

The 25LC256-I/SN is a 256 Kbit serial EEPROM memory chip manufactured by Microchip Technology. It is organized as 32,768 words of 8 bits each, providing non-volatile storage for applications requiring data retention. The chip communicates using the Serial Peripheral Interface (SPI) protocol, supporting clock frequencies up to 10 MHz, which ensures fast data transfer. It operates over a voltage range of 2.5V to 5.5V, making it suitable for various applications, including consumer electronics, industrial systems, and automotive sectors.
The 25LC256 features a low-power CMOS technology, offering both low standby and active currents. It supports write protection via a write-disable instruction and a write-protect pin, enhancing data security. The device also includes a data retention capability of over 200 years and endurance of 1,000,000 erase/write cycles, ensuring reliability for long-term data storage. The chip comes in an 8-pin SOIC package, making it easy to integrate into standard circuit designs. It is designed to operate in environments with temperatures ranging from -40°C to +85°C.

Equivalent

The 25LC256-I/SN is a 256Kb SPI EEPROM from Microchip. Equivalent products include:
1. AT25256 from Atmel/Microchip
2. M95256 from STMicroelectronics
3. 25AA256 from Microchip
4. CAT25256 from ON Semiconductor
5. 93LC256 from Microchip (with a Microwire interface)
These alternatives offer similar storage capacity and SPI interface, but you should verify pin compatibility and specific operating conditions for a perfect match.

Features

The 25LC256-I/SN is a serial EEPROM memory device from Microchip Technology. Key features include:
1. Memory Capacity: 256 Kbit (32 Kbytes), organized as 32,768 x 8 bits.
2. Interface: SPI (Serial Peripheral Interface) with clock speeds up to 10 MHz.
3. Voltage Range: Operates from 2.5V to 5.5V, making it suitable for various applications.
4. Endurance: More than 1,000,000 write cycles per cell.
5. Data Retention: Greater than 200 years.
6. Write Protection: Features block write protection and a write disable instruction to protect data from being overwritten.
7. Page Write Capability: Supports a page write of up to 64 bytes.
8. Low Power Consumption: Offers low power standby and operating modes, which is ideal for battery-powered devices.
9. Temperature Range: Industrial operating temperature range from -40°C to +85°C.
10. Package: Available in an 8-pin SOIC package, providing a compact form factor for integration into various designs.
These features make the 25LC256-I/SN suitable for non-volatile memory storage in a variety of consumer, industrial, and automotive applications.

Pinout

The 25LC256-I/SN is a 256 Kbit SPI (Serial Peripheral Interface) EEPROM memory device manufactured by Microchip Technology. It is commonly used for non-volatile memory storage.
Pin Count and Functions:
1. VCC (1): Power supply input.
2. SO (Serial Output, 2): Outputs data from the EEPROM to the microcontroller.
3. WP (Write Protect, 3): Disables writing to the status register if held low.
4. GND (4): Ground connection.
5. SI (Serial Input, 5): Inputs data from the microcontroller to the EEPROM.
6. SCK (Serial Clock, 6): Clock input that synchronizes data transmission.
7. CS (Chip Select, 7): Activates the device when low, enabling access to the SO and SI pins.
8. HOLD (8): Pauses serial communication without resetting the clock.
The 25LC256 supports byte-level and page-level write operations and is compatible with most microcontroller SPI interfaces.

Manufacturer

The 25LC256-I/SN is manufactured by Microchip Technology Inc. This company is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions. Microchip Technology is known for producing a wide range of semiconductor products that are used in various applications across the automotive, industrial, consumer, aerospace, and communications markets. They provide comprehensive product portfolios that include microcontrollers, development tools, analog and interface products, connectivity solutions, and memory products, such as the 25LC256-I/SN, which is a serial EEPROM.
Microchip's emphasis on innovation, reliability, and quality helps them serve a broad range of industries, offering solutions that enhance performance, functionality, and efficiency of electronic devices. With headquarters in Chandler, Arizona, and operations worldwide, Microchip Technology is recognized for its customer-centric approach and commitment to delivering cost-effective, high-performance semiconductor solutions.

Application

The 25LC256-I/SN is a 256 Kbit serial EEPROM memory. Its applications include:
1. Data Logging: Used in devices that require recording and storing data over time.
2. Configuration Storage: Retains device settings and configurations for electronics like routers and industrial equipment.
3. Firmware Storage: Holds firmware for embedded systems, ensuring they retain functionality after power cycles.
4. Consumer Electronics: Used in TVs, cameras, and home appliances for settings and calibration data.
5. Automotive Systems: Stores diagnostic logs and configuration settings in modern vehicles.
6. Medical Devices: Retains critical data and operational settings.
7. Industrial Automation: Stores parameters and logs for maintenance and troubleshooting.
Its high endurance and reliability make it suitable for various applications needing persistent memory storage.

Package

The 25LC256-I/SN is a 256Kb Serial EEPROM by Microchip Technology, packaged in an 8-lead SOIC (Small Outline Integrated Circuit) type. This package is suitable for applications requiring high-density storage in a compact form factor and supports a serial peripheral interface (SPI).

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