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HomeProductsIntegrated Circuits (ICs)Memory24LC21AT/SN
24LC21AT/SN Image
Image may be representation.
See specifications for product details.

24LC21AT/SN - Microchip Technology

Manufacturer Part Number
24LC21AT/SN
Manufacturer
Microchip Technology
Allelco Part Number
32D-24LC21AT/SN
ECAD Model
Parts Description
IC EEPROM 1KBIT I2C 400KHZ 8SOIC
Detailed Description
Package
8-SOIC (0.154", 3.90mm Width)
Data sheet
24LC21A.pdf
RoHs Status
ROHS3 Compliant
In stock: 84160

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Quantity

Specifications

24LC21AT/SN Tech Specifications
Microchip Technology - 24LC21AT/SN technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - 24LC21AT/SN

Product Attribute Attribute Value  
Manufacturer Microchip Technology  
Write Cycle Time - Word, Page 10ms  
Voltage - Supply 2.5V ~ 5.5V  
Technology EEPROM  
Supplier Device Package 8-SOIC  
Series -  
Package / Case 8-SOIC (0.154", 3.90mm Width)  
Package Tape & Reel (TR)  
Operating Temperature 0°C ~ 70°C (TA)  
Product Attribute Attribute Value  
Mounting Type Surface Mount  
Memory Type Non-Volatile  
Memory Size 1Kbit  
Memory Organization 128 x 8  
Memory Interface I²C  
Memory Format EEPROM  
Clock Frequency 400 kHz  
Base Product Number 24LC21  
Access Time 900 ns  

Parts Introduction

Manufacturer Part Number

24LC21AT/SN

Manufacturer

Microchip Technology

Introduction

The 24LC21AT/SN is a low-power 1Kbit non-volatile EEPROM with a serial I2C interface from Microchip Technology, specifically designed for low-energy applications where small data buffers are needed.

Product Features and Performance

Non-Volatile EEPROM

Memory size of 1Kbit organized in a structure of 128 x 8

I2C serial interface

Clock frequency of 400 kHz

Write cycle time is 10ms for both word and page

Access time amounts to 900 ns

Operates across a voltage range of 2.5V to 5.5V

Product Advantages

Requires very low power for operation

Fast data access and reliable write cycles

Flexible voltage range compatibility

Easy integration via I2C interface

Key Technical Parameters

Memory Size: 1Kbit

Memory Interface: I2C

Clock Frequency: 400 kHz

Write Cycle Time Word, Page: 10ms

Access Time: 900 ns

Voltage Supply: 2.5V ~ 5.5V

Operating Temperature: 0°C ~ 70°C

Quality and Safety Features

Rigorous quality control and testing ensure reliability and durability under specified operating conditions

Compatibility

Compatible with any microcontroller supporting I2C interface

Application Areas

Consumer Electronics

Industrial Automation

Automotive Systems

Data Logging

Portable Devices

Product Lifecycle

Product status is active

No nearing discontinuation noted; product remains widely supported

Several Key Reasons to Choose This Product

Extremely low power consumption enhances battery life in portable applications

The small memory footprint fits perfectly for small scale data retention tasks

High reliability and durability under standard operating conditions

Wide compatibility with I2C-supported devices aids in diverse applications

Readily available and supported, ensuring long-term usability and support

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology 24LC21AT/SN

Product Attribute 24LC21AT/SN 24LC21A/SN 24LC21A/P 24LC21T-I/SN
Part Number 24LC21AT/SN 24LC21A/SN 24LC21A/P 24LC21T-I/SN
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Operating Temperature 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) -40°C ~ 85°C (TA)
Memory Interface I²C I²C I²C I²C
Series - - - -
Base Product Number 24LC21 24LC21 24LC21 24LC21
Package / Case 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-DIP (0.300', 7.62mm) 8-SOIC (0.154", 3.90mm Width)
Write Cycle Time - Word, Page 10ms 10ms 10ms 10ms
Technology EEPROM EEPROM EEPROM EEPROM
Access Time 900 ns 900 ns 900 ns 900 ns
Memory Type Non-Volatile Non-Volatile Non-Volatile Non-Volatile
Package Tape & Reel (TR) Tube Tube Tape & Reel (TR)
Memory Organization 128 x 8 128 x 8 128 x 8 128 x 8
Voltage - Supply 2.5V ~ 5.5V 2.5V ~ 5.5V 2.5V ~ 5.5V 2.5V ~ 5.5V
Clock Frequency 400 kHz 400 kHz 400 kHz 400 kHz
Supplier Device Package 8-SOIC 8-SOIC 8-PDIP 8-SOIC
Memory Size 1Kbit 1Kbit 1Kbit 1Kbit
Mounting Type Surface Mount Surface Mount Through Hole Surface Mount
Memory Format EEPROM EEPROM EEPROM EEPROM

24LC21AT/SN Datasheet PDF

Download 24LC21AT/SN pdf datasheets and Microchip Technology documentation for 24LC21AT/SN - Microchip Technology.

Datasheets
24LC21A.pdf
PCN Packaging
Packing Changes 10/Oct/2016.pdf Reel Design Update 07/May/2015.pdf
PCN Assembly/Origin
Manufacturing Change 07/Apr/2022.pdf
PCN Design/Specification
PdCu Bond Wire Update 21/Sep/2015.pdf

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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24LC21AT/SN Image

24LC21AT/SN

Microchip Technology
32D-24LC21AT/SN

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