AT25256B-SSHL-T

Product Overview

Category

AT25256B-SSHL-T belongs to the category of Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chips.

Use

This product is commonly used for non-volatile storage in various electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile memory: The data stored in AT25256B-SSHL-T is retained even when power is removed.
• High storage capacity: This chip has a storage capacity of 256 kilobits (32 kilobytes).
• Serial interface: It utilizes a serial communication protocol for data transfer.
• Low power consumption: AT25256B-SSHL-T operates at low power levels, making it suitable for battery-powered devices.
• High reliability: It offers excellent data retention and endurance characteristics.

Package

AT25256B-SSHL-T is available in an industry-standard 8-pin Small Outline Integrated Circuit (SOIC) package.

Essence

The essence of AT25256B-SSHL-T lies in its ability to provide reliable and non-volatile storage for electronic devices, ensuring data integrity even during power loss or system shutdowns.

Packaging/Quantity

This product is typically packaged in reels, with each reel containing a specific quantity of AT25256B-SSHL-T chips. The exact quantity per reel may vary depending on the manufacturer's specifications.

Specifications

• Memory Capacity: 256 kilobits (32 kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1 million cycles
• Data Retention: 100 years

Detailed Pin Configuration

1. Chip Select (/CS)
2. Serial Clock (SCK)
3. Serial Data Input/Output (SI/O)
4. Write Protect (/WP)
5. Ground (GND)
6. VCC
7. Hold (/HOLD)
8. Serial Data Output (SO)

Functional Features

• Byte and Page Write Operations: AT25256B-SSHL-T supports both byte-level and page-level write operations, allowing flexible data storage.
• Sequential Read: It enables sequential read operations, facilitating efficient retrieval of stored data.
• Software Protection: The chip provides a write protection feature that can be controlled through the /WP pin or software commands.
• Chip Erase: AT25256B-SSHL-T supports full-chip erase functionality, allowing quick and convenient erasure of all stored data.

Advantages and Disadvantages

Advantages

• High storage capacity for its compact size.
• Low power consumption, suitable for battery-powered devices.
• Excellent data retention and endurance characteristics.
• Flexible write and read operations.
• Software protection feature enhances data security.

Disadvantages

• Limited storage capacity compared to higher-capacity EEPROM chips.
• Relatively slower write and erase speeds compared to other non-volatile memory technologies.

Working Principles

AT25256B-SSHL-T utilizes the Serial Peripheral Interface (SPI) protocol for communication with the host device. It stores data in non-volatile memory cells, which can be electrically programmed and erased. The chip operates by sending commands and data through the SPI interface, enabling read, write, and erase operations as per the host device's instructions.

Detailed Application Field Plans

AT25256B-SSHL-T finds applications in various fields, including: 1. Microcontrollers: Used for storing program code, configuration settings, and calibration data. 2. Computers: Employed in BIOS (Basic Input/Output System) chips for storing system firmware. 3. Consumer Electronics: Utilized in devices like smart TVs, set-top boxes, and digital cameras for data storage purposes.

Detailed and Complete Alternative Models

1. AT25DF256A: A similar Serial Flash memory chip with a higher storage capacity of 256 megabits (32 megabytes).
2. AT24C256: I2C-based EEPROM chip with the same storage capacity but a different interface protocol.
3. AT93C66A: Microwire-compatible EEPROM chip with a smaller storage capacity of 4 kilobits (512 bytes).

These alternative models offer different features and interface options, allowing users to choose the most suitable option based on their specific requirements.

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