AT25020B-XHL-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Non-volatile Serial EEPROM
• Characteristics: High-speed, low-power, small form factor
• Package: XHL-T (8-pin SOIC)
• Essence: Stores and retrieves digital information in electronic systems
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Memory Size: 2 Kbits (256 bytes)
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 1.7V to 5.5V
• Operating Temperature: -40°C to +85°C
• Write Endurance: 1 million cycles
• Data Retention: 100 years

Detailed Pin Configuration

The AT25020B-XHL-T has the following 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 (Power Supply)
7. Hold (/HOLD)
8. Serial Data Output (SO)

Functional Features

• Non-volatile memory: Retains data even when power is removed
• Serial interface: Allows for easy integration with microcontrollers
• High-speed operation: Supports clock frequencies up to 10 MHz
• Low power consumption: Ideal for battery-powered devices
• Write protection: Prevents accidental modification of stored data
• Hardware and software write protection options available

Advantages and Disadvantages

Advantages: - Compact size enables integration into space-constrained designs - Wide operating voltage range allows compatibility with various systems - High endurance and long data retention ensure reliable performance - Easy-to-use serial interface simplifies communication with the device

Disadvantages: - Limited memory capacity may not be suitable for applications requiring large storage - Lack of additional features, such as built-in security mechanisms, may limit certain use cases

Working Principles

The AT25020B-XHL-T utilizes EEPROM (Electrically Erasable Programmable Read-Only Memory) technology to store and retrieve digital information. It employs a serial interface, specifically the SPI protocol, for communication with external devices. The chip select pin (/CS) is used to enable or disable the device, while the serial clock (SCK) and serial data input/output (SI/O) pins handle data transfer.

To write data, the device requires an appropriate command sequence, followed by the desired data. The write protect (/WP) pin can be used to prevent accidental modifications. Reading data involves sending a read command and receiving the requested data through the serial data output (SO) pin.

Detailed Application Field Plans

The AT25020B-XHL-T finds application in various fields, including but not limited to:

1. Consumer Electronics: Used in smart TVs, set-top boxes, and audio systems for configuration storage and firmware updates.
2. Automotive: Employed in electronic control units (ECUs), infotainment systems, and instrument clusters for data logging and calibration settings.
3. Industrial Automation: Utilized in programmable logic controllers (PLCs), motor drives, and sensors for parameter storage and system configuration.
4. Medical Devices: Integrated into patient monitoring systems, infusion pumps, and diagnostic equipment for storing patient data and device settings.

Detailed and Complete Alternative Models

1. AT25040B-XHL-T: 4 Kbit Serial EEPROM, same package and characteristics as AT25020B-XHL-T.
2. AT25080B-XHL-T: 8 Kbit Serial EEPROM, same package and characteristics as AT25020B-XHL-T.
3. AT25160B-XHL-T: 16 Kbit Serial EEPROM, same package and characteristics as AT25020B-XHL-T.

These alternative models offer increased memory capacity while maintaining compatibility with the AT25020B-XHL-T in terms of package and functional features.

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