24LC21AT-I/SN

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24LC21AT-I/SN

IC EEPROM 1KBIT I2C 400KHZ 8SOIC

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規格

Part Status Active
DigiKey Programmable Verified
Memory Type Non-Volatile
Memory Format EEPROM
Technology EEPROM
Memory Size 1Kbit
Memory Organization 128 x 8
Memory Interface I2C
Write Cycle Time - Word, Page 10ms
Voltage - Supply 2.5V ~ 5.5V
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Base Product Number 24LC21
Clock Frequency 400 kHz
Access Time 900 ns

概述

Description

The 24LC21AT-I/SN is a 2-kilobit (256 x 8-bit) EEPROM (Electrically Erasable Programmable Read-Only Memory) produced by Microchip Technology. It utilizes I2C (Inter-Integrated Circuit) communication, allowing multiple devices to be connected on the same bus. This memory chip operates at a voltage range of 1.8V to 5.5V and features a simple two-wire interface for data transfer, making it suitable for various applications, including consumer electronics, automotive systems, and industrial controls.
Key features include:
- 2 Kbit memory density
- I2C interface with up to 1 MHz clock speed
- 8-byte page write capability
- Low power consumption in active and standby modes
- Endurance of up to 1 million write cycles and data retention of up to 100 years
The 24LC21AT-I/SN is ideal for applications requiring non-volatile storage, enabling easy data storage and retrieval without the need for constant power.

Features

The 24LC21AT-I/SN is a 2-wire serial EEPROM (Electrically Erasable Programmable Read-Only Memory) from Microchip Technology. Key features include:
- Storage Capacity: 2 Kbit (256 x 8 bits).
- Interface: I2C-compatible, allowing multiple devices on a single bus.
- Operating Voltage: 1.8V to 5.5V, suitable for low-power applications.
- Data Rate: Supports up to 400 kHz I2C clock speed.
- Page Write: Supports page write operation, allowing up to 16 bytes to be written at once.
- Endurance: Typically 1 million write cycles per memory cell.
- Data Retention: Maintains data integrity for up to 100 years.
- Thermal Range: Operating temperature range of -40°C to +85°C.
This device is ideal for applications requiring non-volatile memory storage, such as configuration data, calibration parameters, and user settings.

Package

The 24LC21AT-I/SN is typically housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. This package type is commonly used for surface-mount applications, offering a compact size for integration in electronic circuits.

Pinout

The 24LC21AT-I/SN is an I2C-compatible EEPROM (Electrically Erasable Programmable Read-Only Memory) chip with a total of 8 pins. Here’s the pin count and their functions:
1. VCC (Pin 1): Power supply for the chip (typically 1.8V to 5.5V).
2. GND (Pin 8): Ground connection.
3. SDA (Pin 2): Serial Data Line; used for transferring data to and from the EEPROM.
4. SCL (Pin 3): Serial Clock Line; used to synchronize the data transmission.
5. WP (Pin 4): Write Protect; when tied to VCC, it prevents write operations.
6. A0 (Pin 5): Address pin; used to configure the I2C address.
7. A1 (Pin 6): Address pin; used to configure the I2C address.
8. A2 (Pin 7): Address pin; used to configure the I2C address.
This chip is suitable for applications requiring non-volatile data storage in a compact package.

Manufacturer

The 24LC21AT-I/SN is manufactured by Microchip Technology Inc. Microchip is a leading provider of microcontroller and analog semiconductors. Founded in 1989, the company specializes in producing integrated circuits (ICs) and solutions that cater to a wide range of applications, including automotive, industrial, and consumer electronics. Microchip is known for its focus on innovation and quality, offering a diverse product portfolio that includes microcontrollers, memory products, and various development tools. Their commitment to supporting engineers and developers through comprehensive resources and technical support has made them a key player in the semiconductor industry.

Application

The 24LC21AT-I/SN is a 2K-bit I2C EEPROM used in various applications, including:
1. Consumer Electronics: Storing configuration settings and user preferences.
2. Industrial Control Systems: Retaining calibration data and operational parameters.
3. Telecommunications: Storing firmware and software updates.
4. Automotive: Maintaining vehicle settings and diagnostics.
5. Smart Meters: Retaining usage data and configurations.
Its low power consumption and I2C interface make it suitable for embedded systems requiring non-volatile memory.

Equivalent

The 24LC21AT-I/SN is a 2K-bit I2C EEPROM. Equivalent products include the Microchip 24LC21A, STMicroelectronics M24C21, and Atmel AT24C21. Ensure compatibility with I2C communication and similar memory size when substituting.

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