93LC66AT-I/OT Microchip Integrated Circuit (SOT23 (6-Pin)) In Stock
Microchip 93LC66AT-I/OT is a 4Kbit (512×8) serial EEPROM in a compact SOT-23-6 package, operating up to 3 MHz SPI clock, rated for 1 million write/erase cycles with 200-year data retention. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- 93LC66AT-I/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2627(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4Kbit (512×8) serial EEPROM with 3 MHz SPI-compatible clock interface
- 1,000,000 write/erase cycle endurance with 200-year data retention
- Ultra-compact SOT-23-6 package ideal for space-constrained designs
- RoHS-compliant (Pb-free) with industrial temperature range support
Applications
The 93LC66AT-I/OT is well suited for storing configuration data and calibration parameters in consumer electronics, industrial sensors, and appliances. Its compact SOT-23-6 footprint makes it ideal for portable and wearable devices where board space is critical. The device also serves automotive accessory modules and medical instrument calibration storage where reliable non-volatile memory is required.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-6 |
| Factory Lead Time | 14Weeks |
| 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) | 2.5V |
| Supply Voltage-Nom (Vsup) | 3V |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum SPI clock frequency supported by the 93LC66AT-I/OT?
The 93LC66AT-I/OT supports a maximum SPI-compatible clock frequency of 3 MHz, making it suitable for microcontroller systems that communicate over standard serial buses at typical embedded clock rates.
How many write/erase cycles can the 93LC66AT-I/OT endure before reliability degrades?
The device is rated for up to 1,000,000 write/erase cycles, providing exceptional longevity for applications that frequently update configuration registers, calibration offsets, or usage counters in industrial and consumer equipment.
Which embedded control designs can use the 93LC66AT-I/OT given its 4Kbit capacity and SOT-23-6 footprint?
At 4Kbit (512 bytes) organized as 512×8, the device is ideal for storing firmware version IDs, sensor calibration tables, and small configuration records in 8-bit or 32-bit microcontroller designs where board area is limited to the SOT-23-6 outline.
When is the 93LC66AT-I/OT a practical choice over a larger EEPROM in a PCB design?
When the application requires fewer than 512 bytes of non-volatile storage at 3 MHz SPI, the 93LC66AT-I/OT's SOT-23-6 package saves significant PCB area compared to 8-SOIC alternatives, reducing cost and simplifying layout in handheld or wearable products.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2627 | $0.26 |
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