AT93C66B-XHM-B Memory by Microchip Technology

4Kb Microwire (3-wire) Serial EEPROM

Status: Active
Series: AT93C66B
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The Microchip AT93C66B is a 4 Kb Microwire (3-wire) Serial EEPROM organized as either 512 x 8 or 256 x 16, selectable in hardware using the ORG pin. The device is optimized for use in consumer, industrial, and automotive applications where reliable and dependable nonvolatile memory storage is essential. The EEPROM is available in a variety of space-saving packaging options.

Where to Buy

Prices starting from US$0.26

Distributor Stock
Logo for Farnell
Farnell
from US$0.33
1,037
in stock
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Logo for Microchip Technology
Microchip Technology
from US$0.26
4,400
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Chip One Stop
from US$0.26
1,200
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Newark Electronics
from US$0.30
1,037
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element14
from US$0.33
1,037
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Transfer Multisort Elektronik
from US$0.65
189
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Future Electronics
from US$0.28
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Avnet America
from US$0.33
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EBV Elektronik
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Avnet Silica
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Features

User selectable 512 x 8 or 256 x 16 Organization (4 Kbit)
Industry Standard Microwire Serial I/O
Up to 2 MHz clock compatibility
Self-Timed Erase and Write Cycles (5 ms max.)
Read current 0.5 mA (Typ), 2.0 mA (Max)
Write current 0.5 mA (Typ),2.0 mA (Max)
Standby current 10.0 uA (Typ), 15.0 uA (Max)
Software Write-Protection
More than 1 million erase/write cycles
Data retention > 100 years
Grade 1 Temperature Range: -40°C to 125°C
Qualified for Automotive Applications
Factory Programming Available
Available in 8-pin SOIC (150 mil), 8-pin TSSOP, 8-pad UDFN, 8-pad XDFN, and 8-ball VFBGA packages

Specifications

Density (Organization) 4K bits (x8 or x16)
Operating Voltage Min. (V) 1.7
Oper Voltage Max (V) 5.5
Max. Clock Freq. 2 MHz
Page Size (bytes) 0
Write Protected True
Endurance 1,000,000
Data Retention (Years) 0
Battery Backup False
Pins | Packaging 8 | TSSOP
Temp Range -40C to +85C
Packing Media Tube (100)

Environmental Information

JEDEC Indicator e4
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.0358
Shipping Weight (kg) 0.19
Lead Count 8
Package Type TSSOP
Package Width or Size 4.4mm
Soldering Composition NiPdAu

Alternative Descriptions

1.7-5.5V, 2MHz, Ind Temp, 8-TSSOP | Microchip Technology
Serial Eeprom, 4Kbit, 2Mhz, Tssop-8 | Newark Electronics
SERIAL EEPROM, 4KBIT, 2MHZ, TSSOP-8 | element14
IC: EEPROM memory | Transfer Multisort Elektronik
AT93C66B Series 4 Kb (512 x 8 / 256 x 16) 5.5 V 3-Wire Serial EEPROM - TSSOP-8 | Future Electronics
EEPROM Serial-3Wire 4K-bit 512 x 8/256 x 16 1.8V/2.5V/3.3V/5V 8-Pin TSSOP Bulk | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a AT93C66B-XHM-B?

Additional datasheets, footprints and schematics for AT93C66B-XHM-B are listed on our Part Details page. You can also find images and similar parts to AT93C66B-XHM-B on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for AT93C66B-XHM-B on our Product Comparison page. Access via the 'View Pricing & Stock' button to view AT93C66B-XHM-B price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does AT93C66B-XHM-B fall under?

The AT93C66B-XHM-B is listed under Semiconductors - ICs > Memory > EEPROM.

Can I view similar or alternative parts?

You can view similar parts to AT93C66B-XHM-B when available in the EEPROM range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the AT93C66B-XHM-B you can contact the distributor directly for product support, shipping queries etc.

Is the AT93C66B-XHM-B RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

Which authorised distributors for AT93C66B-XHM-B have stock available?

Authorised distributors including Microchip Technology, Chip One Stop, Newark Electronics, element14 and Farnell have stock available or on a lead time for AT93C66B-XHM-B.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for AT93C66B-XHM-B often in real-time on the comparison pages.

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