93LC66B-I/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip 93LC66B-I/P is a 4Kbit serial EEPROM with SPI-compatible interface, operating from 2.5V to 5.5V. It offers 1 million erase/write cycles and over 200 years data retention in an 8-pin PDIP package for non-volatile storage applications.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 93LC66B-I/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2800(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 SPI-compatible EEPROM with 1 MHz clock speed, enabling fast non-volatile data storage in space-constrained designs
- Exceptional endurance of 1,000,000 erase/write cycles and data retention exceeding 200 years for long-life embedded systems
- Wide supply voltage range of 2.5V to 5.5V enabling compatibility with both 3.3V and 5V microcontroller systems without level translation
Applications
The 93LC66B-I/P is ideal for storing calibration data, configuration parameters, and user settings in industrial sensors, smart meters, and consumer electronics requiring reliable non-volatile memory. Its wide 2.5V to 5.5V operating range and 8-pin PDIP form factor make it a straightforward drop-in solution for both legacy 5V systems and modern 3.3V microcontroller platforms.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-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-PDIP-T8 |
| 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 | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Parallel/Serial | SERIAL |
| 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 | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Toggle Bit | YES |
| Write Cycle Time-Max (tWC) | 6ms |
| Write Protection | SOFTWARE |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 93LC66B-I/P:
Frequently Asked Questions
How many erase/write cycles and how long does the 93LC66B-I/P retain data without power?
The 93LC66B-I/P is rated for a minimum of 1,000,000 erase/write cycles and guarantees data retention exceeding 200 years, making it suitable for high-endurance logging and configuration storage applications.
What serial interface and maximum clock frequency does the 93LC66B-I/P use?
The device uses a 3-wire SPI-compatible serial interface and supports clock frequencies up to 1 MHz, allowing straightforward integration with virtually any microcontroller's SPI or bit-banged GPIO peripheral.
Can the 93LC66B-I/P operate in both 3.3V and 5V microcontroller systems?
Yes, the 93LC66B-I/P operates from 2.5V to 5.5V, covering both 3.3V and 5V supply rails without requiring any level-shifting circuitry, which simplifies board design and reduces component count.
How much data capacity does the 4Kbit 93LC66B-I/P provide, and how is it organized?
The 93LC66B-I/P provides 4Kbit (512 bytes) of EEPROM organized as 256 x 16-bit words or 512 x 8-bit bytes depending on the ORG pin state, offering flexible data width for different microcontroller architectures.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4500 | $0.45 |
| 25+ | $0.4300 | $10.75 |
| 100+ | $0.4200 | $42.00 |
| 240+ | $0.3205 | $76.92 |
| 300+ | $0.2850 | $85.50 |
| 1000+ | $0.2800 | $280.00 |
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