93AA66AT-I/OT Microchip Integrated Circuit (SOT23 (6-Pin)) In Stock
The 93AA66AT-I/OT is a 4 Kbit (512 x 8) serial EEPROM from Microchip Technology operating at 1.8V with a 3 MHz SPI interface, 1 million write/erase cycle endurance, and 200-year minimum data retention. Housed in a compact 6-pin SOT-23 package for space-constrained designs. Available in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- 93AA66AT-I/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1780(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 93AA66AT-I/OT?
- 1.8V low-voltage operation extends compatibility with modern low-power microcontrollers and battery-powered designs
- 1 million write/erase cycle endurance ensures reliable data logging and configuration storage over product lifetime
- 200-year minimum data retention guarantees long-term non-volatile storage without battery backup
- Compact 6-pin SOT-23 package minimizes PCB area for wearable, IoT, and miniaturized embedded applications
What is 93AA66AT-I/OT used for?
The 93AA66AT-I/OT is ideal for storing calibration data, configuration parameters, and device identification information in portable consumer electronics, wearable sensors, and IoT endpoint devices operating from 1.8V power supplies. Its 1 million write cycle endurance and 200-year data retention make it suitable for data logging applications in industrial sensors, medical instruments, and smart meters where reliable non-volatile storage is essential. The small SOT-23-6 package also makes it a preferred choice for board space-constrained designs in Bluetooth modules, wireless sensors, and compact embedded controllers.
What are the specifications of 93AA66AT-I/OT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-6 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 3MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G6 |
| 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 | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| 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 | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Toggle Bit | YES |
| Write Cycle Time-Max (tWC) | 6ms |
| Write Protection | SOFTWARE |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Thailand |
Where can I find the 93AA66AT-I/OT datasheet?
93AA66AT-I/OT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 93AA66AT-I/OT?
Compatible alternatives and drop-in replacements for 93AA66AT-I/OT:
Frequently Asked Questions
What is the memory capacity and organization of the 93AA66AT-I/OT?
The 93AA66AT-I/OT provides 4 Kbits (4096 bits) of EEPROM memory organized as 512 x 8 bits (512 bytes). This organization allows byte-wide read and write access via the 3-wire SPI serial interface at up to 3 MHz clock frequency, making it straightforward to interface with most 8-bit, 16-bit, and 32-bit microcontrollers.
What is the endurance and data retention specification of the 93AA66AT-I/OT?
The 93AA66AT-I/OT is specified for a minimum of 1 million write/erase cycles per memory location, ensuring long-lasting reliable operation even in applications with frequent data updates. Data retention is guaranteed for a minimum of 200 years under normal storage conditions, providing confidence that stored calibration, configuration, and identification data remains intact over the entire product lifecycle.
What supply voltage does the 93AA66AT-I/OT require and what is its operating temperature range?
The 93AA66AT-I/OT is designed for 1.8V operation, making it directly compatible with low-power microcontrollers and SoCs that use 1.8V I/O standards. The 'IND' suffix indicates an industrial temperature rating, covering the extended range from -40°C to +85°C, making it suitable for outdoor equipment, industrial sensors, and automotive-adjacent applications experiencing wide ambient temperature swings.
What serial interface does the 93AA66AT-I/OT use and how is it connected to a microcontroller?
The 93AA66AT-I/OT uses a 3-wire Microwire-compatible SPI interface with clock (CLK), data input (DI), data output (DO), and chip select (CS) signals, using 4 of its 6 SOT-23 pins. It operates at clock rates up to 3 MHz and communicates using standard SPI Mode 0 or Mode 3, making it easy to connect to virtually any microcontroller with a hardware or software SPI peripheral.
What is the package type of the 93AA66AT-I/OT and are there alternative package options?
The 93AA66AT-I/OT is packaged in a 6-pin SOT-23 surface-mount package (JESD-30 code R-PDSO-G6, manufacturer code SOT-23-6), which measures approximately 3x1.75 mm. Microchip also offers the same 93AA66A memory in 8-pin PDIP (through-hole) and SOIC packages for applications where the SOT-23 footprint is not suitable or where socketed prototyping is preferred.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2627 | $0.26 |
| 3000+ | $0.1780 | $534.00 |
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