93LC66A-I/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock

Name: 93LC66A-I/P
Brand: Microchip
SKU: 93LC66A-I/P
Availability: InStock

The Microchip 93LC66A-I/P is a 4 kb serial EEPROM with a 3-wire SPI interface, operating from 2.5 V to 5.5 V and offering 1,000,000 erase/write cycles with over 200 years of data retention. Housed in an 8-pin PDIP package, it provides 450 ns access time with a maximum 1 MHz clock frequency.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

93LC66A-I/PDual-In-Line Packages

Quick Facts

Manufacturer: Microchip
Package: Dual-In-Line Packages
Pin Count: 8
Lifecycle: ACTIVE
Datasheet: 93LC66A-I/P Datasheet PDF
Category: Integrated Circuit
Price: From $0.2898(MOQ 1)
Temp Range: -40.0°C to 85.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of 93LC66A-I/P?

4 kb serial EEPROM with 3-wire SPI interface and 450 ns access time for fast embedded data storage
Endurance of 1,000,000 erase/write cycles with data retention greater than 200 years for long-life applications
Wide supply voltage range of 2.5 V to 5.5 V in a through-hole 8-pin PDIP package for easy prototyping

What is 93LC66A-I/P used for?

The 93LC66A-I/P is used in embedded systems for storing calibration data, configuration settings, and non-volatile user parameters. It is well suited for consumer electronics, industrial control units, and automotive accessories that require compact, low-power serial memory. Its 8-pin PDIP package makes it accessible for both prototype boards and low-volume production designs.

What are the specifications of 93LC66A-I/P?

Pbfree Code	Yes
Manufacturer Package Code	PDIP-8
Factory Lead Time	23Weeks
YTEOL	8
Additional Feature	1000000 ERASE/WRITE CYCLES MIN; DATA RETENTION > 200 YEARS
Clock Frequency-Max (fCLK)	1MHz
Data Retention Time-Min	200
Endurance	1000000 Write/Erase Cycles
JESD-30 Code	R-PDIP-T8
JESD-609 Code	e3
Memory Density	4096bit
Memory IC Type	EEPROM
Memory Width	8
Number of Functions	1
Number of Ports	1
Number of Words	512words
Number of Words Code	512
Operating Mode	SYNCHRONOUS
Organization	512X8
Output Characteristics	TOTEM POLE
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	DIP8,.3
Package Shape	RECTANGULAR
Package Style	IN-LINE
Parallel/Serial	SERIAL
Qualification Status	Not Qualified
Ready/Busy	YES
Reverse Pinout	NO
Screening Level	TS 16949
Serial Bus Type	MICROWIRE
Standby Current-Max	0.000001A
Supply Current-Max	0.002mA
Supply Voltage-Max (Vsup)	5.5V
Supply Voltage-Min (Vsup)	1.8V
Supply Voltage-Nom (Vsup)	2.5V
Surface Mount	NO
Technology	CMOS
Temperature Grade	INDUSTRIAL
Terminal Finish	Matte Tin (Sn)
Terminal Form	THROUGH-HOLE
Terminal Pitch	2.54mm
Terminal Position	DUAL
Toggle Bit	YES
Write Cycle Time-Max (tWC)	6ms
Write Protection	SOFTWARE
Package	Dual-In-Line Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.32.00.51
Country of Origin	Thailand

Where can I find the 93LC66A-I/P datasheet?

93LC66A-I/P Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for 93LC66A-I/P?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

How many erase/write cycles does the 93LC66A-I/P support and how long will stored data last?

The 93LC66A-I/P is rated for a minimum of 1,000,000 erase/write cycles and guarantees data retention for more than 200 years, making it an extremely reliable choice for non-volatile storage of calibration coefficients, system configuration, and user preferences in embedded applications.

What supply voltage range does the 93LC66A-I/P accept and what is its maximum clock frequency?

The 93LC66A-I/P operates from a supply voltage of 2.5 V to 5.5 V, covering both 3.3 V and 5 V system rails. It supports a maximum serial clock frequency of 1 MHz, providing reliable and fast access to its 4 kb of EEPROM storage in a wide range of microcontroller-based designs.

What makes the 93LC66A-I/P suitable for prototyping compared to surface-mount EEPROM alternatives?

The 93LC66A-I/P uses a through-hole 8-pin PDIP package with 2.54 mm pitch, making it easy to insert directly into breadboards and DIP sockets without soldering. Its 4 kb capacity and 2.5 V to 5.5 V voltage range match most development boards, and the 450 ns read access time is adequate for low-speed microcontroller configurations.

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AvailabilityIn Stock

Reference Price (USD)

From $0.2898

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Qty.	Unit Price	Ext. Price
1+	$0.3000	$0.30
146+	$0.2898	$42.31

pcs

Unit price: $0.3000 · Total: $0.30

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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93LC66A-I/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock

What are the key features of 93LC66A-I/P?

What is 93LC66A-I/P used for?

What are the specifications of 93LC66A-I/P?

Compliance & Regulatory

Where can I find the 93LC66A-I/P datasheet?

What are equivalent replacements for 93LC66A-I/P?

Frequently Asked Questions

How many erase/write cycles does the 93LC66A-I/P support and how long will stored data last?

What supply voltage range does the 93LC66A-I/P accept and what is its maximum clock frequency?

What makes the 93LC66A-I/P suitable for prototyping compared to surface-mount EEPROM alternatives?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Microchip

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