93AA66B-I/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 93AA66B-I/MS is a 4K-bit (256x16) serial EEPROM operating at 1.8V with SPI interface. Features 1MHz clock frequency, 1 million write/erase cycle endurance, and 200-year data retention. Available in compact MSOP-8 package with RoHS-compliant lead-free construction for industrial temperature applications. In stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 93AA66B-I/MS Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4K-bit (256x16) organization with 1.8V low-voltage operation ideal for battery-powered designs
- 1MHz SPI clock frequency supporting high-speed serial communication with 1 million write/erase cycle endurance
- 200-year minimum data retention in ultra-compact MSOP-8 package with industrial temperature rating
- RoHS-compliant lead-free (Pb-free) construction meeting global environmental standards
Applications
The 93AA66B-I/MS is widely used in industrial control systems for storing configuration parameters, calibration data, and non-volatile settings that must survive power cycles. Its low 1.8V operating voltage makes it ideal for portable devices, IoT sensors, and battery-operated equipment where power consumption is critical. The serial EEPROM also finds applications in automotive electronics, smart meters, and medical devices requiring reliable long-term data retention with high endurance.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 23Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 1MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | S-PDSO-G8 |
| 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 | TSSOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN 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) | 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 | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Toggle Bit | YES |
| Write Cycle Time-Max (tWC) | 6ms |
| Write Protection | SOFTWARE |
| ## 93AA66B-I/MS Alternates Showing results | Image |
| 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 capacity and organization of the 93AA66B-I/MS?
The 93AA66B-I/MS provides 4096 bits (4K) of EEPROM memory organized as 256 words of 16 bits each. It communicates via a 3-wire SPI-compatible serial interface with a maximum clock frequency of 1MHz, making it easy to integrate with most microcontrollers.
What is the operating voltage and temperature range of the 93AA66B-I/MS?
This device operates at 1.8V supply voltage, making it suitable for low-power applications. The -I suffix designates industrial temperature range operation. It is housed in an MSOP-8 package (Microchip package code), which is a miniature 8-pin small outline package.
How long can the 93AA66B-I/MS retain data and how many write cycles does it support?
The 93AA66B-I/MS offers a minimum data retention time of 200 years, ensuring long-term reliable storage of critical parameters. It supports up to 1,000,000 write/erase cycles per memory location, providing excellent endurance for applications that frequently update stored values.
Is the 93AA66B-I/MS RoHS compliant and lead-free?
Yes, the 93AA66B-I/MS is fully RoHS compliant and lead-free (Pb-free code: Yes, JESD-609 code: e3). It meets global environmental regulations for restriction of hazardous substances, making it suitable for designs requiring compliance with EU RoHS directives and similar standards.
What are common applications for the Microchip 93AA66B-I/MS serial EEPROM?
Common applications include storing non-volatile configuration data in industrial control systems, calibration coefficients in measurement equipment, user settings in consumer electronics, and security keys in access control systems. Its low voltage operation and compact MSOP-8 package make it ideal for space-constrained portable and IoT designs.
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