Specification	93LC66AT/SN

Clock Frequency	2 MHz
Memory Format	EEPROM
Memory Interface	Microwire
Memory Organization [custom]	512
Memory Organization [custom]	8
Memory Size	4 Kbit
Memory Type	Non-Volatile
Mounting Type	Surface Mount
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SOIC
Technology	EEPROM
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2.5 V

93LC66A Series

2Kb Microwire (3-wire) Serial EEPROM with Hardware Selectable Word Size

Part	Memory Size	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Technology	Memory Organization	Package / Case	Package / Case [custom]	Package / Case	Memory Format	Memory Interface	Clock Frequency	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Memory Type	Memory Organization [custom]	Memory Organization [custom]	Package / Case [y]	Package / Case [x]	Package / Case [custom]	Grade	Qualification	Memory Organization	Write Cycle Time - Word, Page	Package / Case
Microchip Technology 93LC66C-I/MS	4 Kbit	85 °C	-40 °C	8-MSOP	EEPROM	256 512	8-MSOP 8-TSSOP	0.118 in	3 mm	EEPROM	Microwire	3 MHz	2.5 V	5.5 V	Surface Mount	Non-Volatile
Microchip Technology 93LC66AXT-E/SN	4 Kbit	125 °C	-40 °C	8-SOIC	EEPROM		8-SOIC			EEPROM	Microwire	2 MHz	2.5 V	5.5 V	Surface Mount	Non-Volatile	512	8	3.9 mm	0.154 in
Microchip Technology 93LC66CT-I/ST	4 Kbit	85 °C	-40 °C	8-TSSOP	EEPROM	256 512	8-TSSOP	0.173 "		EEPROM	Microwire	3 MHz	2.5 V	5.5 V	Surface Mount	Non-Volatile					4.4 mm
Microchip Technology 93LC66BT-I/OT15KVAO	4 Kbit	85 °C	-40 °C	SOT-23-6	EEPROM		SOT-23-6			EEPROM	Microwire	2 MHz	2.5 V	5.5 V	Surface Mount	Non-Volatile						Automotive	AEC-Q100	256 x 16
Microchip Technology 93LC66AT-I/MNY	4 Kbit	85 °C	-40 °C	8-TDFN (2x3)	EEPROM		8-WFDFN Exposed Pad			EEPROM	Microwire	2 MHz	2.5 V	5.5 V	Surface Mount	Non-Volatile	512	8
Microchip Technology 93LC66CT-I/MS	4 Kbit	85 °C	-40 °C	8-MSOP	EEPROM	256 512	8-MSOP 8-TSSOP	0.118 in	3 mm	EEPROM	Microwire	3 MHz	2.5 V	5.5 V	Surface Mount	Non-Volatile
Microchip Technology 93LC66BT-E/ST15KVAO	4 Kbit	125 °C	-40 °C	8-TSSOP	EEPROM		8-TSSOP	0.173 "		EEPROM	Microwire	2 MHz	2.5 V	5.5 V	Surface Mount	Non-Volatile					4.4 mm	Automotive	AEC-Q100	256 x 16
Microchip Technology 93LC66-I/SN	4 Kbit	85 °C	-40 °C	8-SOIC	EEPROM	256 512	8-SOIC			EEPROM	Microwire	2 MHz	2.5 V	5.5 V	Surface Mount	Non-Volatile			3.9 mm	0.154 in					10 ms
Microchip Technology 93LC66C-E/P	4 Kbit	125 °C	-40 °C	8-PDIP	EEPROM	256 512	8-DIP		0.3 in	EEPROM	Microwire	3 MHz	2.5 V	5.5 V	Through Hole	Non-Volatile										7.62 mm
Microchip Technology 93LC66AT/SN	4 Kbit	70 °C	0 °C	8-SOIC	EEPROM		8-SOIC			EEPROM	Microwire	2 MHz	2.5 V	5.5 V	Surface Mount	Non-Volatile	512	8	3.9 mm	0.154 in

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.36
		25	$ 0.35
		100	$ 0.34
	Digi-Reel®	1	$ 0.36
		25	$ 0.35
		100	$ 0.34
	Tape & Reel (TR)	3300	$ 0.33
Microchip Direct	T/R	1	$ 0.35
		25	$ 0.34
		100	$ 0.33
		1000	$ 0.30
		5000	$ 0.27
		10000	$ 0.26
Newark	Each (Supplied on Full Reel)	100	$ 0.33

Description

General part information

93LC66A Series

The Microchip 93LC66A device is a 4Kb Microwire (3-wire) Serial EEPROM with dedicated 8-bit memory organization and a voltage operation range of 2.5 - 5.5V. Also available are the 93LC66B for dedicated 16-bit memory organization and the 93LC66C for hardware selectable word size using the ORG pin. The 93LC66A is optimized for use in consumer, industrial, and automotive applications where reliable and dependable nonvolatile memory storage is essential. The device is available in a variety of Pb-free packages including SOT-23, PDIP, SOIC, MSOP, DFN and TSSOP.

Documents

Technical documentation and resources

Datasheet

Using the C18 Compiler to Interface Microwire Serial EEPROMs to PIC18 Devices

Application Notes

93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C 4-Kbit Microwire Compatible Serial EEPROM Data Sheet

Data Sheets

93LC66AT/SN

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93LC66AT/SN

Deep-Dive with AI

Technical Specifications

93LC66A Series

Pricing

Description

93LC66A Series

Documents

Datasheet

Using the C18 Compiler to Interface Microwire Serial EEPROMs to PIC18 Devices

93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C 4-Kbit Microwire Compatible Serial EEPROM Data Sheet

1K, 2K and 4K Microwire EEPROM Migration

Interfacing Microwire Serial EEPROMs to PIC18 Devices

Interfacing Microwire Serial EEPROMs to PIC16 Devices

Using the MSSP Module to Interface Microwire Serial EEPROMs to PIC16 Devices

Product Change Notice EN

93LC66A Series