AT25M02-U1UM0B-T

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Non-volatile Memory
• Characteristics:
  • High-speed performance
  • Low power consumption
  • Small form factor
  • Reliable data retention
• Package: SOP-8 (Small Outline Package)
• Essence: Serial EEPROM (Electrically Erasable Programmable Read-Only Memory)
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Memory Size: 2 Megabits (256 Kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 1.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1 Million cycles
• Data Retention: 100 Years

Detailed Pin Configuration

The AT25M02-U1UM0B-T has a total of 8 pins arranged as follows:

┌───┬───┐ │ 1 │ 2 │ ├───┼───┤ │ 3 │ 4 │ ├───┼───┤ │ 5 │ 6 │ ├───┼───┤ │ 7 │ 8 │ └───┴───┘

1. Chip Select (/CS): Used to enable or disable the device.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Used to input data into the device.
4. Ground (GND): Connected to the ground reference.
5. Serial Data Output (SO): Outputs data from the device.
6. Write Protect (/WP): Used to protect the memory from being written.
7. Hold (/HOLD): Used to pause serial communication temporarily.
8. Power Supply (VCC): Connected to the power source.

Functional Features

• High-speed data transfer with SPI interface.
• Low power consumption for efficient operation.
• Reliable data retention ensures long-term storage of information.
• Write protection feature prevents accidental modification of data.
• Hold function allows pausing and resuming serial communication.

Advantages and Disadvantages

Advantages

• Compact size makes it suitable for space-constrained applications.
• Wide operating voltage range allows compatibility with various systems.
• High write endurance ensures durability and longevity.
• SPI interface enables easy integration with microcontrollers.

Disadvantages

• Limited memory size compared to other non-volatile memory options.
• Relatively higher cost per unit compared to larger capacity memories.
• Requires external components for proper operation.

Working Principles

The AT25M02-U1UM0B-T is a serial EEPROM that stores data using electrically isolated memory cells. It utilizes the Serial Peripheral Interface (SPI) for communication with a microcontroller or other devices. The device can be accessed by enabling the Chip Select (/CS) pin and providing clock signals through the Serial Clock (SCK) pin. Data can be written to or read from the memory using the Serial Data Input (SI) and Serial Data Output (SO) pins, respectively. The Write Protect (/WP) pin allows protecting the memory from accidental writes, while the Hold (/HOLD) pin pauses the serial communication temporarily.

Detailed Application Field Plans

The AT25M02-U1UM0B-T is commonly used in various electronic devices and systems, including but not limited to: - Consumer electronics: TVs, set-top boxes, audio players, etc. - Automotive electronics: Infotainment systems, instrument clusters, etc. - Industrial equipment: Measurement devices, control systems, etc. - Communication devices: Routers, modems, network switches, etc.

Detailed and Complete Alternative Models

• AT25M01-U1UM0B-T: 1 Megabit (128 Kilobytes) memory size.
• AT25M04-U1UM0B-T: 4 Megabits (512 Kilobytes) memory size.
• AT25M08-U1UM0B-T: 8 Megabits (1 Megabyte) memory size.
• AT25M16-U1UM0B-T: 16 Megabits (2 Megabytes) memory size.

These alternative models offer different memory sizes to suit specific application requirements.

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