Microchip Technology
画像はイメージの場合もございます。
商品詳細は仕様をご覧ください。
AT24C256B-TH-T
詳細を表示 DataSheets

AT24C256B-TH-T

Product Overview

Category

AT24C256B-TH-T belongs to the category of EEPROM (Electrically Erasable Programmable Read-Only Memory) chips.

Use

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

Characteristics

  • Non-volatile: The stored data remains intact even when power is removed.
  • Electrically erasable: Data can be erased and reprogrammed electronically.
  • High storage capacity: The AT24C256B-TH-T has a capacity of 256 kilobits (32 kilobytes).
  • Low power consumption: It operates on low power supply voltages, making it suitable for battery-powered devices.

Package

The AT24C256B-TH-T comes in an 8-pin SOP (Small Outline Package) with a thermal pad for improved heat dissipation.

Essence

The essence of this chip lies in its ability to provide reliable and non-volatile data storage in a compact form factor.

Packaging/Quantity

The AT24C256B-TH-T is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Memory Capacity: 256 kilobits (32 kilobytes)
  • Interface: I2C (Inter-Integrated Circuit)
  • Operating Voltage: 1.7V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Write Cycle Endurance: 1 million cycles
  • Data Retention: 100 years

Detailed Pin Configuration

The AT24C256B-TH-T has the following pin configuration:

  1. A0: Address Input
  2. A1: Address Input
  3. A2: Address Input
  4. GND: Ground
  5. SDA: Serial Data Input/Output
  6. SCL: Serial Clock Input
  7. WP: Write Protect
  8. VCC: Power Supply

Functional Features

  • Random Access: Allows reading and writing of data at any memory location.
  • Page Write Mode: Enables writing multiple bytes in a single write operation, improving efficiency.
  • Software Write Protection: The WP pin can be used to protect the memory from accidental writes.
  • Hardware Write Protection: A2, A1, and A0 pins can be tied to VCC or GND to enable permanent write protection.

Advantages and Disadvantages

Advantages

  • High storage capacity for its size.
  • Low power consumption.
  • Non-volatile data storage.
  • Wide operating voltage range.
  • Reliable and durable.

Disadvantages

  • Limited write cycle endurance.
  • Slower write speed compared to other memory technologies.
  • Requires an I2C interface for communication.

Working Principles

The AT24C256B-TH-T utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. It uses an I2C interface to communicate with the host device. When data needs to be stored or retrieved, the host device sends appropriate commands and addresses to the chip, which then performs the necessary operations.

Detailed Application Field Plans

The AT24C256B-TH-T finds applications in various fields, including: 1. Embedded Systems: Used for storing configuration data, calibration values, and firmware updates in microcontrollers. 2. Industrial Automation: Stores critical parameters, log data, and system settings in programmable logic controllers (PLCs). 3. Automotive Electronics: Used for storing vehicle-specific data, such as mileage, user preferences, and fault codes. 4. Consumer Electronics: Found in devices like smart TVs, set-top boxes, and audio systems for storing user settings and preferences.

Detailed and Complete Alternative Models

  1. AT24C01A: 1 kilobit (128 bytes) EEPROM chip.
  2. AT24C04: 4 kilobit (512 bytes) EEPROM chip.
  3. AT24C64: 64 kilobit (8 kilobytes) EEPROM chip.
  4. AT24C1024B: 1024 kilobit (128 kilobytes) EEPROM chip.

These alternative models offer different storage capacities to suit specific application requirements.

In conclusion, the AT24C256B-TH-T is a versatile EEPROM chip that provides reliable non-volatile data storage in various electronic devices. With its high storage capacity, low power consumption, and wide operating voltage range, it offers an efficient solution for data storage needs. However, it has limitations in terms of write cycle endurance and write speed. Nonetheless, its working principles and extensive application field plans make it a valuable component in many industries.

技術ソリューションにおける AT24C256B-TH-T の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of AT24C256B-TH-T in technical solutions:

  1. Q: What is the AT24C256B-TH-T? A: The AT24C256B-TH-T is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chip with a capacity of 256 kilobits (32 kilobytes). It is commonly used for non-volatile data storage in various electronic devices.

  2. Q: What is the operating voltage range of the AT24C256B-TH-T? A: The AT24C256B-TH-T operates within a voltage range of 1.7V to 5.5V, making it compatible with a wide range of microcontrollers and systems.

  3. Q: How is the AT24C256B-TH-T interfaced with a microcontroller? A: The AT24C256B-TH-T uses the I2C (Inter-Integrated Circuit) protocol for communication with a microcontroller. It requires only two pins (SDA and SCL) for data transfer.

  4. Q: What is the maximum clock frequency supported by the AT24C256B-TH-T? A: The AT24C256B-TH-T supports a maximum clock frequency of 1 MHz, allowing for fast data transfer between the microcontroller and the EEPROM.

  5. Q: Can the AT24C256B-TH-T be used for both read and write operations? A: Yes, the AT24C256B-TH-T supports both read and write operations. It allows for individual byte-level read and write access to the memory array.

  6. Q: Does the AT24C256B-TH-T have any built-in security features? A: No, the AT24C256B-TH-T does not have any built-in security features. It is a standard EEPROM chip without hardware encryption or protection mechanisms.

  7. Q: What is the typical endurance of the AT24C256B-TH-T? A: The AT24C256B-TH-T has a typical endurance of 1 million write cycles. This means that each memory location can be written to approximately 1 million times before it may start to degrade.

  8. Q: Can the AT24C256B-TH-T operate in extreme temperature conditions? A: Yes, the AT24C256B-TH-T is designed to operate in a wide temperature range from -40°C to +85°C, making it suitable for applications in harsh environments.

  9. Q: Is the AT24C256B-TH-T compatible with other similar EEPROM chips? A: Yes, the AT24C256B-TH-T is compatible with other EEPROM chips that follow the I2C protocol and have a similar capacity. It can be easily replaced or used alongside other compatible devices.

  10. Q: Are there any application examples for the AT24C256B-TH-T? A: Yes, the AT24C256B-TH-T is commonly used in various applications such as data logging, configuration storage, security key storage, and parameter storage in microcontroller-based systems.

Please note that these answers are general and may vary depending on specific implementation details and requirements.