93LC66A-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 93LC66A-I/SN is a 4Kbit 3-wire serial EEPROM in an 8-pin SOIC package with 1MHz clock, 1 million erase/write cycles, and over 200-year data retention. Supports SPI-compatible interface for simple embedded storage. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 93LC66A-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1970(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 serial EEPROM with 1,000,000 minimum erase/write cycle endurance for high-reliability non-volatile storage
- Greater than 200-year data retention ensures long-term reliability in industrial and automotive calibration storage
- 3-wire SPI-compatible interface with up to 1 MHz clock for easy integration with microcontrollers
- Lead-free 8-pin SOIC-8 package with RoHS compliance (JESD-609 code e3) for modern electronics manufacturing
Applications
The 93LC66A-I/SN is commonly used for storing calibration data, configuration parameters, and trim values in industrial sensors, medical devices, and consumer electronics that require reliable non-volatile memory. Its 1 million write cycle endurance and 200-year data retention make it ideal for applications like smart meters, HVAC controllers, and automotive body electronics where infrequent but critical data writes are expected. The 3-wire SPI interface simplifies PCB routing alongside microcontrollers in 8-pin SOIC packages.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 14Weeks |
| YTEOL | 8 |
| Additional Feature | 1000000 ERASE/WRITE CYCLES MIN; DATA RETENTION > 200 YEARS |
| Clock Frequency-Max (fCLK) | 1MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G8 |
| 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 | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| 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 | 1.27mm |
| Terminal Position | DUAL |
| Toggle Bit | YES |
| Write Cycle Time-Max (tWC) | 6ms |
| Write Protection | SOFTWARE |
| Package | Small Outline Packages |
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
Compatible alternatives and drop-in replacements for 93LC66A-I/SN:
Frequently Asked Questions
What is the write endurance and data retention of 93LC66A-I/SN?
The 93LC66A-I/SN guarantees a minimum of 1,000,000 erase/write cycles and data retention exceeding 200 years under standard operating conditions. This makes it a highly reliable choice for applications that store calibration constants, device configuration, or trim data that are written infrequently but must be retained indefinitely.
How fast can 93LC66A-I/SN communicate over its serial interface?
The 93LC66A-I/SN supports a maximum clock frequency of 1 MHz on its 3-wire SPI-compatible interface, enabling fast byte-level read and write transactions with standard microcontrollers. At 1 MHz, a full page write completes quickly, making it suitable for real-time configuration updates in embedded systems.
In which embedded systems is 93LC66A-I/SN most commonly used as configuration storage?
The 93LC66A-I/SN is widely used for storing non-volatile calibration coefficients, MAC addresses, and device configuration in smart meters, HVAC controllers, medical sensor modules, and industrial process equipment. Its 4Kbit capacity is sufficient for hundreds of calibration bytes, and its 8-pin SOIC-8 footprint fits standard dual-in-line PCB land patterns.
Is 93LC66A-I/SN RoHS compliant and what is the lead time?
Yes, the 93LC66A-I/SN is RoHS compliant with JESD-609 code e3 (lead-free process). The factory lead time is approximately 14 weeks for standard orders, so designers working with production volumes should plan buffer inventory accordingly. Stock availability can reduce effective lead time for smaller quantities.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.3800 | $0.38 |
| 10+ | $0.3720 | $3.72 |
| 15+ | $0.3316 | $4.97 |
| 25+ | $0.3239 | $8.10 |
| 100+ | $0.3198 | $31.98 |
| 500+ | $0.1970 | $98.50 |
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