93LC66A-I/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
The Microchip 93LC66A-I/P is a 4 kb serial EEPROM with a 3-wire SPI interface, operating from 2.5 V to 5.5 V and offering 1,000,000 erase/write cycles with over 200 years of data retention. Housed in an 8-pin PDIP package, it provides 450 ns access time with a maximum 1 MHz clock frequency.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 93LC66A-I/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2898(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
- 4 kb serial EEPROM with 3-wire SPI interface and 450 ns access time for fast embedded data storage
- Endurance of 1,000,000 erase/write cycles with data retention greater than 200 years for long-life applications
- Wide supply voltage range of 2.5 V to 5.5 V in a through-hole 8-pin PDIP package for easy prototyping
Applications
The 93LC66A-I/P is used in embedded systems for storing calibration data, configuration settings, and non-volatile user parameters. It is well suited for consumer electronics, industrial control units, and automotive accessories that require compact, low-power serial memory. Its 8-pin PDIP package makes it accessible for both prototype boards and low-volume production designs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-8 |
| Factory Lead Time | 23Weeks |
| 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 | 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 | 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many erase/write cycles does the 93LC66A-I/P support and how long will stored data last?
The 93LC66A-I/P is rated for a minimum of 1,000,000 erase/write cycles and guarantees data retention for more than 200 years, making it an extremely reliable choice for non-volatile storage of calibration coefficients, system configuration, and user preferences in embedded applications.
What supply voltage range does the 93LC66A-I/P accept and what is its maximum clock frequency?
The 93LC66A-I/P operates from a supply voltage of 2.5 V to 5.5 V, covering both 3.3 V and 5 V system rails. It supports a maximum serial clock frequency of 1 MHz, providing reliable and fast access to its 4 kb of EEPROM storage in a wide range of microcontroller-based designs.
What makes the 93LC66A-I/P suitable for prototyping compared to surface-mount EEPROM alternatives?
The 93LC66A-I/P uses a through-hole 8-pin PDIP package with 2.54 mm pitch, making it easy to insert directly into breadboards and DIP sockets without soldering. Its 4 kb capacity and 2.5 V to 5.5 V voltage range match most development boards, and the 450 ns read access time is adequate for low-speed microcontroller configurations.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.3000 | $0.30 |
| 146+ | $0.2898 | $42.31 |
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