About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsIntegrated Circuits (ICs)Memory93LC66AT/ST
93LC66AT/ST Image
93LC66AT/ST Image - 1
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

93LC66AT/ST - Microchip Technology

Manufacturer Part Number
93LC66AT/ST
Manufacturer
Microchip Technology
Allelco Part Number
32D-93LC66AT/ST
Warranty
1 Year Allelco Warranty - Find out more
Parts Description
IC EEPROM 4KBIT MICROWIRE 8TSSOP
Package
8-TSSOP
Data sheet
1.93LC66AT/ST.pdf ...

PCN Assembly/Origin

Bond Wire 28/Mar/2022.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 84220
  • Unit Price: $0.204
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $0.204 $0.20
10+ $0.164 $1.64
30+ $0.147 $4.41
100+ $0.126 $12.60
500+ $0.117 $58.50
1000+ $0.111 $111.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.
EXPRESS OPTION
Payment method
Our certification

Specifications

93LC66AT/ST Tech Specifications
Microchip Technology - 93LC66AT/ST technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - 93LC66AT/ST

Product Attribute Attribute Value  
Manufacturer Microchip Technology  
Write Cycle Time - Word, Page 6ms  
Voltage - Supply 2.5V ~ 5.5V  
Technology EEPROM  
Supplier Device Package 8-TSSOP  
Series -  
Package / Case 8-TSSOP (0.173", 4.40mm 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 4Kbit  
Memory Organization 512 x 8  
Memory Interface Microwire  
Memory Format EEPROM  
Clock Frequency 2 MHz  
Base Product Number 93LC66  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.32.0051

Parts Introduction

Manufacturer Part Number

93LC66AT/ST

Manufacturer

microchip-technology

Introduction

The 93LC66AT/ST is a 4Kbit EEPROM (Electrically Erasable Programmable Read-Only Memory) device from Microchip Technology. It offers non-volatile data storage with a Microwire interface, making it suitable for a wide range of embedded applications that require small-scale data storage and retrieval.

Product Features and Performance

4Kbit (512 x 8) EEPROM memory capacity

Microwire serial interface for data communication

2MHz maximum clock frequency

6ms typical write cycle time

5V to 5.5V operating voltage range

0°C to 70°C operating temperature range

Surface mount 8-TSSOP package

Product Advantages

Non-volatile data storage for long-term data retention

Compact size and low power consumption suitable for space-constrained designs

Microwire interface provides simple and efficient data access

Wide operating voltage and temperature ranges for versatile applications

Key Reasons to Choose This Product

Reliable and cost-effective EEPROM solution for embedded systems

Seamless integration with microcontrollers and other digital components

Ideal for applications requiring small-scale data storage and retrieval

Backed by Microchip's extensive support and product availability

Quality and Safety Features

Robust EEPROM technology with high endurance and data retention

Strict quality control and reliability testing during manufacturing

Compatibility

The 93LC66AT/ST is compatible with a wide range of microcontrollers and digital systems that support the Microwire serial interface.

Application Areas

Industrial automation and control systems

Home appliances and consumer electronics

Automotive electronics

Metering and monitoring devices

General-purpose embedded systems

Product Lifecycle

The 93LC66AT/ST is an active and currently available product from Microchip Technology. There are no direct equivalent or alternative models available from Microchip at this time. For the latest product information and availability, please contact our website's sales team.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology 93LC66AT/ST

Product Attribute 93LC66AT-I/ST 93LC66AT-I/MS 93LC66AXT-E/SN 93LC66AT-I/SN
Part Number 93LC66AT-I/ST 93LC66AT-I/MS 93LC66AXT-E/SN 93LC66AT-I/SN
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Memory Size - - - -
Memory Interface - - - -
Memory Type - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Memory Organization - - - -
Voltage - Supply - - - -
Memory Format - - - -
Clock Frequency - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Series - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Write Cycle Time - Word, Page - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Technology - - - -

93LC66AT/ST Datasheet PDF

Download 93LC66AT/ST pdf datasheets and Microchip Technology documentation for 93LC66AT/ST - Microchip Technology.

Datasheets
93AA66x, 93LC66x, 93C66x.pdf
PCN Assembly/Origin
Bond Wire 28/Mar/2022.pdf
PCN Packaging
Label and Packing Changes 23/Sep/2015.pdf Reel Design Update 07/May/2015.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2024

    I had a great experience purchasing items from Allelcoelec, I recommend

  • Uri ***al
    Jun 19, 2024

    Good comunication,
    Transpnt regarding the process and price.

  • Yaqu***l Ali
    Jun 19, 2024

    Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.

  • Lea ***
    Jun 19, 2024

    Morrey was very helpful and right on top of things!
    He replied quickly to my RFQ. He was very courteous and professional.

Write a Review

Your Email address will not be published.

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

View More
93LC66AT/ST Image

93LC66AT/ST

Microchip Technology
32D-93LC66AT/ST

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB