AT25M02-SSHM-B

Product Overview

Category

AT25M02-SSHM-B belongs to the category of Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chips.

Use

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

Characteristics

• Non-volatile: The data stored in AT25M02-SSHM-B remains intact even when power is removed.
• High endurance: This chip can withstand a large number of read and write cycles.
• Small form factor: The package size of AT25M02-SSHM-B is compact, making it suitable for space-constrained applications.
• Low power consumption: It operates at low power levels, conserving energy in battery-powered devices.

Package

AT25M02-SSHM-B is available in a surface-mount package, which facilitates easy integration onto circuit boards.

Essence

The essence of AT25M02-SSHM-B lies in its ability to provide reliable and efficient non-volatile data storage in electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Memory capacity: 2 megabits (256 kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating voltage: 1.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Data retention: Up to 100 years
• Write endurance: Up to 1 million cycles

Detailed Pin Configuration

AT25M02-SSHM-B has a standard 8-pin configuration:

1. Chip Select (/CS): Used to enable or disable the chip for communication.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Used to input data into the chip.
4. Serial Data Output (SO): Outputs data from the chip during read operations.
5. Write Protect (/WP): When pulled low, it protects the memory from write operations.
6. Hold (/HOLD): Allows pausing and resuming of serial communication.
7. VCC: Power supply voltage.
8. Ground (GND): Common ground reference.

Functional Features

• Byte-level Read/Write: AT25M02-SSHM-B allows individual bytes to be read from or written to.
• Sector Erase: It supports sector-wise erasure, enabling efficient memory management.
• Software Protection: The chip provides software-based protection mechanisms to prevent unauthorized access to stored data.
• Fast Read Mode: This mode allows for high-speed data retrieval.
• Sequential Read: AT25M02-SSHM-B supports sequential reading of multiple bytes, reducing access time.

Advantages and Disadvantages

Advantages

• Reliable non-volatile storage solution.
• High endurance and long data retention.
• Compact form factor for space-constrained applications.
• Low power consumption.
• Easy integration with standard serial interfaces.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Slower write speeds compared to volatile memory.

Working Principles

AT25M02-SSHM-B utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. It stores information in a grid of memory cells, where each cell can hold one bit of data. To write data, an electrical charge is applied to the appropriate memory cells, altering their state. Reading data involves detecting the state of each memory cell and converting it back into usable information.

Detailed Application Field Plans

AT25M02-SSHM-B finds application in various fields, including: 1. Microcontroller-based systems requiring non-volatile memory storage. 2. Industrial automation and control systems. 3. Automotive electronics, such as engine management systems and infotainment units. 4. Consumer electronics, including smart TVs, set-top boxes, and gaming consoles. 5. Medical devices, where reliable data storage is crucial.

Detailed and Complete Alternative Models

Some alternative models to AT25M02-SSHM-B include: 1. AT25M01-SSHM-B: Similar specifications but with half the memory capacity (1 megabit). 2. AT25M04-SSHM-B: Similar specifications but with double the memory capacity (4 megabits). 3. AT24C256C-SSHM-T: I2C interface-based EEPROM chip with a larger memory capacity (256 kilobits).

In conclusion, AT25M02-SSHM-B is a reliable and efficient Serial EEPROM chip that provides non-volatile data storage for various electronic devices. With its compact size, low power consumption, and high endurance, it offers advantages in terms of reliability and space efficiency. However, it has limitations in terms of storage capacity and write speeds compared to other memory technologies.