Overview
The AT24C02B-TH-T is a 2-wire serial EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Microchip Technology (formerly Atmel). This component provides non-volatile storage for data that needs to be retained even when power is removed. It is commonly used in applications such as configuration storage, parameter storage, and small data logging. The AT24C02B-TH-T offers a wide voltage operation range, low power consumption, and high reliability, making it suitable for various embedded systems and consumer electronics applications.
Key Specifications
| Specification | Value |
|---|---|
| Package / Case | 8-TSSOP (0.173", 4.40 mm) |
| Interface Type | 2-Wire, I2C |
| Memory Size | 2 kbit (256 x 8) |
| Supply Voltage - Min | 1.8 V |
| Supply Voltage - Max | 5.5 V |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +85°C |
| Maximum Clock Frequency | 400 kHz |
| Access Time | 900 ns |
| Data Retention | 100 Years |
| Supply Current - Max | 3 mA |
| Active Read Current - Max | 3 mA |
Key Features
- Non-Volatile Storage: Retains data without power, ensuring data integrity.
- Simple Interface: Uses I2C interface for easy integration with microcontrollers.
- Low Power Consumption: Operates with low power, suitable for battery-powered applications.
- Cost-Effective: Provides cost-effective storage solutions for small amounts of data.
- Wide Voltage Operation Range: Compatible with a range of supply voltages from 1.8V to 5.5V.
- High Reliability: Ensures reliable data storage and retrieval.
- Noise Suppression: Features Schmitt Trigger, filtered inputs for noise suppression.
Applications
- Embedded Systems: Ideal for storing configuration data and small code snippets in embedded applications.
- Consumer Electronics: Used in consumer devices for storing user settings and preferences.
- Industrial Automation: Suitable for recording operational parameters in industrial control systems.
- The AT24C02B-TH-T is suitable for use in applications requiring non-volatile data storage with low power consumption, commonly employed in embedded systems, consumer electronics, and industrial automation for reliable data storage and retrieval.
Q & A
- What is the AT24C02B-TH-T?
The AT24C02B-TH-T is a 2-wire serial EEPROM manufactured by Microchip Technology, providing non-volatile storage for data that needs to be retained even when power is removed.
- How does the AT24C02B-TH-T work?
The AT24C02B-TH-T operates by using a 2-wire serial interface (I2C) to communicate with microcontrollers or other digital devices, allowing for byte-level read and write operations.
- How many pins does the AT24C02B-TH-T have and what are their functions?
The AT24C02B-TH-T has 8 pins, including address pins (A0, A1, A2), serial data pin (SDA), serial clock pin (SCL), write protect pin (WP), power supply pin (VCC), and ground pin (GND).
- What are the pros and cons of the AT24C02B-TH-T?
Pros include non-volatile storage, simple I2C interface, low power consumption, and cost-effectiveness. Cons include limited storage capacity, slower access speeds, and limited write endurance.
- Are there any equivalents or alternatives to the AT24C02B-TH-T?
Alternatives include the AT24C04 from Microchip Technology, which offers double the storage capacity, and the 24AA02E48, which provides additional features like a unique factory-programmed serial number.
- What is the typical application for the AT24C02B-TH-T in embedded systems?
In embedded systems, the AT24C02B-TH-T is ideal for storing configuration data and small code snippets.
- How do I connect the AT24C02B-TH-T to my microcontroller?
Connect the AT24C02B-TH-T to your microcontroller using the SDA and SCL lines for I2C communication. Ensure proper power supply connections to VCC and ground to enable read and write operations. Use the WP pin for write protection if required.
- What is the maximum operating temperature of the AT24C02B-TH-T?
The maximum operating temperature of the AT24C02B-TH-T is +85°C.
- What is the data retention period of the AT24C02B-TH-T?
The AT24C02B-TH-T has a data retention period of 100 years.
- What is the maximum clock frequency of the AT24C02B-TH-T?
The maximum clock frequency of the AT24C02B-TH-T is 400 kHz.
