93AA66C-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The Microchip 93AA66C-I/SN is a 4Kbit SPI serial EEPROM configurable as 256 x 16 or 512 x 8, supporting up to 3 MHz clock speed with 1 million write/erase cycles. It operates from 1.8V to 5.5V in an SOIC-8 package. In stock worldwide with fast global shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 93AA66C-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2741(MOQ 6)
- 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 EEPROM configurable as 256 x 16-bit or 512 x 8-bit organization for flexible data storage layouts
- Wide 1.8V to 5.5V operating voltage supports ultra-low-power designs as well as standard 3.3V and 5V systems
- Up to 3 MHz SPI clock frequency enables fast serial data access for responsive embedded applications
- 1,000,000 write/erase cycles with 200-year data retention ensures long-term reliability in deployed systems
Applications
The 93AA66C-I/SN is used for storing non-volatile configuration data, calibration tables, and trim parameters in embedded systems requiring SPI serial EEPROM with flexible word-width organization. Its 1.8V minimum operating voltage makes it suitable for ultra-low-power IoT devices, energy-harvesting sensors, and battery-operated equipment. It is also widely used in consumer electronics, white goods, and industrial controllers for persistent data storage with simple 4-wire SPI connectivity.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 14Weeks |
| YTEOL | 8 |
| Additional Feature | ALSO CONFIGURABLE AS 512 X 8 |
| Alternate Memory Width | 8 |
| Clock Frequency-Max (fCLK) | 3MHz |
| 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 | 16 |
| Number of Functions | 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 | 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the memory organization of the 93AA66C-I/SN?
The 93AA66C-I/SN is a 4Kbit serial EEPROM that can be configured as either 256 x 16-bit or 512 x 8-bit organization. The word width is selected via the ORG pin, allowing designers to choose the memory layout that best matches their application's data structure without changing the device.
What is the maximum clock speed supported by the 93AA66C-I/SN?
The 93AA66C-I/SN supports a maximum SPI clock frequency of 3 MHz, which is faster than many standard serial EEPROM devices. This higher clock rate allows quicker data read and write operations, reducing the time the host microcontroller must spend on EEPROM access in time-sensitive embedded applications.
What supply voltage range does the 93AA66C-I/SN support?
The 93AA66C-I/SN operates over a wide voltage range from 1.8V to 5.5V, covering ultra-low-power 1.8V designs as well as standard 3.3V and 5V systems. This broad range makes it compatible with virtually any modern microcontroller without requiring additional voltage level translation components.
What package does the 93AA66C-I/SN use?
The 93AA66C-I/SN is packaged in a standard SOIC-8 (Small Outline IC, 8-pin) surface-mount package. This widely available package has a well-established PCB footprint supported by virtually every EDA tool, making it easy to integrate into new and existing board designs.
How does the 93AA66C-I/SN compare to I2C EEPROMs like the 24LC series?
Unlike I2C EEPROMs such as the Microchip 24LC series which use a 2-wire interface, the 93AA66C-I/SN uses a 3-wire SPI (Microwire-compatible) interface, which can be faster and simpler for single-device connections. The SPI interface does not require device addressing, making it straightforward to use when only one EEPROM is on the bus. The configurable 8-bit or 16-bit word width is also an advantage for applications with 16-bit data structures.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 6+ | $0.2741 | $1.64 |
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