93LC66BT-I/OT Microchip Integrated Circuit (SOT23 (6-Pin)) In Stock
Microchip 93LC66BT-I/OT is a 4096-bit (512 x 8 or 256 x 16) 3-wire MICROWIRE serial EEPROM in a compact SOT-23-6 package. It operates from 2.5V to 5.5V, supports up to 3 MHz clock frequency, and endures 1,000,000 write/erase cycles with 200-year data retention.
- Manufacturer
- Microchip
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- 93LC66BT-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
What are the key features of 93LC66BT-I/OT?
- 4096-bit MICROWIRE serial EEPROM with 3 MHz max clock frequency enables fast non-volatile storage in ultra-compact SOT-23-6 footprint
- 1,000,000 write/erase cycle endurance with 200-year minimum data retention ensures long-term reliability for critical configuration storage
- Wide 2.5V to 5.5V supply range with hardware-selectable 8-bit or 16-bit word organization supports diverse microcontroller interface voltages
What is 93LC66BT-I/OT used for?
The 93LC66BT-I/OT is well suited for storing calibration constants, configuration parameters, and trimming data in consumer electronics, automotive sensors, and industrial instrumentation where a compact 4096-bit non-volatile memory in SOT-23-6 is needed. Its 2.5V to 5.5V operating range and MICROWIRE 3-wire interface make it a straightforward companion to PIC, AVR, and ARM microcontrollers without level-shift circuitry. Medical devices, smart meters, and HVAC controllers use this part to preserve system settings across power cycles, leveraging its 1,000,000-cycle endurance and 200-year data retention.
What are the specifications of 93LC66BT-I/OT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-6 |
| Factory Lead Time | 16Weeks |
| 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 | 16 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 256words |
| Number of Words Code | 256 |
| Operating Mode | SYNCHRONOUS |
| Organization | 256X16 |
| 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 |
| ## 93LC66BT-I/OT Alternates Showing results | Image |
| 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 93LC66BT-I/OT datasheet?
93LC66BT-I/OT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 93LC66BT-I/OT?
Compatible alternatives and drop-in replacements for 93LC66BT-I/OT:
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Frequently Asked Questions
Can the 93LC66BT-I/OT interface directly with a 3.3 V microcontroller, and what is its maximum clock speed?
Yes, the 93LC66BT-I/OT operates from 2.5V to 5.5V, so a 3.3 V microcontroller interfaces directly without level shifters. Its 3-wire MICROWIRE bus supports a maximum clock frequency of 3 MHz, enabling fast sequential reads of all 4096 bits in under 2 ms at full speed.
How does the 93LC66BT-I/OT endurance and retention compare to typical flash memory for configuration storage?
With 1,000,000 write/erase cycle endurance and a minimum data retention period of 200 years, the 93LC66BT-I/OT significantly outlasts standard NOR flash (typically 100,000 cycles and 20-year retention) for frequent configuration parameter updates in industrial sensors and metering equipment.
What word-organization modes does the 93LC66BT-I/OT support, and how is organization selected?
The 93LC66BT-I/OT supports both 512 x 8-bit and 256 x 16-bit organization modes within its 4096-bit array. Organization is hardware-selected via the ORG pin: pulling it low selects 8-bit words for byte-addressed systems, while pulling it high selects 16-bit words, giving designers flexibility without requiring a different part number.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2627 | $0.26 |
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