AT25M02-SSHM-T

Product Overview

Category: Integrated Circuit (IC)

Use: Data Storage and Retrieval

Characteristics: - Non-volatile memory - Serial Peripheral Interface (SPI) protocol - High-speed data transfer - Low power consumption

Package: Surface Mount Technology (SMT)

Essence: EEPROM (Electrically Erasable Programmable Read-Only Memory)

Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Memory Size: 2 Megabits (256 Kilobytes)
• Operating Voltage: 1.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1 Million cycles
• Data Retention: 100 Years
• Clock Frequency: Up to 20 MHz
• Package Dimensions: 8-pin Small Outline Integrated Circuit (SOIC)

Detailed Pin Configuration

The AT25M02-SSHM-T IC has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | CS | Chip Select | | 2 | SO | Serial Data Output | | 3 | WP | Write Protect | | 4 | GND | Ground | | 5 | SI | Serial Data Input | | 6 | SCK | Serial Clock | | 7 | HOLD | Hold Input | | 8 | VCC | Power Supply |

Functional Features

1. High-Speed Data Transfer: The AT25M02-SSHM-T supports a clock frequency of up to 20 MHz, enabling fast data transfer between the IC and the host device.

2. Low Power Consumption: This IC is designed to operate with low power consumption, making it suitable for battery-powered devices and energy-efficient applications.

3. Flexible Write Protection: The WP pin allows users to protect the stored data from accidental modification by enabling write protection. This feature ensures data integrity and security.

4. Wide Operating Voltage Range: The AT25M02-SSHM-T can operate within a voltage range of 1.7V to 5.5V, providing compatibility with various electronic systems.

Advantages

• Non-volatile memory ensures data retention even when power is disconnected.
• Serial Peripheral Interface (SPI) protocol simplifies communication with the IC.
• High-speed data transfer enhances overall system performance.
• Low power consumption prolongs battery life in portable devices.
• Flexible write protection prevents unauthorized data modification.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively higher cost per unit compared to traditional ROM or RAM chips.
• Requires additional circuitry for interfacing with the host device.

Working Principles

The AT25M02-SSHM-T is an EEPROM that stores and retrieves digital information using electrically controlled floating-gate transistors. It utilizes the Serial Peripheral Interface (SPI) protocol to communicate with the host device. When data needs to be written, the SPI interface sends the data along with the appropriate commands to the IC. The data is then stored in the non-volatile memory cells. During read operations, the stored data is retrieved and transmitted back to the host device via the SPI interface.

Detailed Application Field Plans

The AT25M02-SSHM-T IC finds applications in various fields, including:

1. Consumer Electronics: Used in smart TVs, set-top boxes, and audio/video equipment for storing configuration settings, firmware updates, and user data.

2. Automotive: Employed in automotive electronics for storing critical data such as vehicle parameters, calibration settings, and event logs.

3. Industrial Automation: Utilized in industrial control systems for storing program code, configuration data, and historical logs.

4. Medical Devices: Integrated into medical equipment for storing patient data, device settings, and firmware updates.

Detailed and Complete Alternative Models

1. AT25M01-SSHM-T: Similar to AT25M02-SSHM-T but with a smaller memory size of 1 Megabit (128 Kilobytes).

2. AT25M04-SSHM-T: Similar to AT25M02-SSHM-T but with a larger memory size of 4 Megabits (512 Kilobytes).

3. AT25M08-SSHM-T: Similar to AT25M02-SSHM-T but with an even larger memory size of 8 Megabits (1 Megabyte).

4. AT25M16-SSHM-T: Similar to AT25M02-SSHM-T but with a significantly larger memory size of 16 Megabits (2 Megabytes).

5. AT25M32-SSHM-T: Similar to AT