Specification	93C66AT-E/MS

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]	125 °C
Operating Temperature [Min]	-40 °C
Package / Case	8-MSOP, 8-TSSOP
Package / Case	3 mm
Package / Case [custom]	0.118 in
Supplier Device Package	8-MSOP
Technology	EEPROM
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V
Write Cycle Time - Word, Page	2 ms

93C66A Series

Part	Voltage - Supply [Min]	Voltage - Supply [Max]	Memory Organization	Package / Case	Package / Case	Package / Case	Mounting Type	Memory Size	Memory Interface	Clock Frequency	Supplier Device Package	Memory Format	Technology	Write Cycle Time - Word, Page	Memory Type	Operating Temperature [Max]	Operating Temperature [Min]	Memory Organization [custom]	Memory Organization [custom]	Package / Case [custom]	Package / Case [custom]	Package / Case [y]	Package / Case [x]
Microchip Technology AT93C66A-10PU-2.7	2.7 V	5.5 V	256 512	0.3 in	8-DIP	7.62 mm	Through Hole	4 Kbit	3-Wire Serial	2 MHz	8-PDIP	EEPROM	EEPROM	10 ms	Non-Volatile	85 °C	-40 °C
Microchip Technology 93C66AT-E/ST	4.5 V	5.5 V			8-TSSOP		Surface Mount	4 Kbit	Microwire	2 MHz	8-TSSOP	EEPROM	EEPROM	2 ms	Non-Volatile	125 °C	-40 °C	512	8	0.173 "	4.4 mm
Microchip Technology AT93C66A-10TI-2.7	2.7 V	5.5 V	256 512		8-TSSOP		Surface Mount	4 Kbit	3-Wire Serial	2 MHz	8-TSSOP	EEPROM	EEPROM	10 ms	Non-Volatile	85 °C	-40 °C			0.173 "	4.4 mm
Microchip Technology AT93C66A-10PI-1.8	1.8 V	5.5 V	256 512	0.3 in	8-DIP	7.62 mm	Through Hole	4 Kbit	3-Wire Serial	2 MHz	8-PDIP	EEPROM	EEPROM	10 ms	Non-Volatile	85 °C	-40 °C
Microchip Technology AT93C66AW-10SI-1.8	1.8 V	5.5 V	256 512		8-SOIC		Surface Mount	4 Kbit	3-Wire Serial	2 MHz	8-SOIC	EEPROM	EEPROM	10 ms	Non-Volatile	85 °C	-40 °C					3.9 mm	0.154 in
Microchip Technology 93C66AT-I/ST	4.5 V	5.5 V			8-TSSOP		Surface Mount	4 Kbit	Microwire	2 MHz	8-TSSOP	EEPROM	EEPROM	2 ms	Non-Volatile	85 °C	-40 °C	512	8	0.173 "	4.4 mm
Microchip Technology 93C66A-E/MS	4.5 V	5.5 V		3 mm	8-MSOP 8-TSSOP		Surface Mount	4 Kbit	Microwire	2 MHz	8-MSOP	EEPROM	EEPROM	2 ms	Non-Volatile	125 °C	-40 °C	512	8	0.118 in
Microchip Technology AT93C66AW-10SU-2.7	2.7 V	5.5 V	256 512		8-SOIC		Surface Mount	4 Kbit	3-Wire Serial	2 MHz	8-SOIC	EEPROM	EEPROM	10 ms	Non-Volatile	85 °C	-40 °C					3.9 mm	0.154 in
Microchip Technology 93C66AT-E/MS	4.5 V	5.5 V		3 mm	8-MSOP 8-TSSOP		Surface Mount	4 Kbit	Microwire	2 MHz	8-MSOP	EEPROM	EEPROM	2 ms	Non-Volatile	125 °C	-40 °C	512	8	0.118 in
Microchip Technology AT93C66A-10SI-2.7-T	2.7 V	5.5 V	256 512		8-SOIC		Surface Mount	4 Kbit	3-Wire Serial	2 MHz	8-SOIC	EEPROM	EEPROM	10 ms	Non-Volatile	85 °C	-40 °C					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	Tape & Reel (TR)	2500	$ 0.46
Microchip Direct	T/R	1	$ 0.48
		25	$ 0.47
		100	$ 0.45
		1000	$ 0.43
		5000	$ 0.41
		10000	$ 0.37
Newark	Each (Supplied on Full Reel)	100	$ 0.48

Description

General part information

93C66A Series

Low-Power CMOS Technology

ORG Pin to Select Word Size for ‘46C’ Version

512 x 8-bit Organization ‘A’ Devices (no ORG)

Documents

Technical documentation and resources

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

Data Sheets

93C66AT-E/MS

Deep-Dive with AI

93C66AT-E/MS

Deep-Dive with AI

Technical Specifications

93C66A Series

Pricing

Description

93C66A Series

Documents

Product Change Notice EN

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

Interfacing Microwire Serial EEPROMs to PIC18 Devices

1K, 2K and 4K Microwire EEPROM Migration

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

Interfacing Microwire Serial EEPROMs to PIC16 Devices

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

Datasheet

93C66A Series