93AA66A-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 93AA66A-I/SN is a 4Kbit serial EEPROM organized as 512x8 bytes, operating at 1.8V with a 3-wire Microwire interface up to 1MHz. It features 1,000,000 write/erase cycle endurance and 200-year minimum data retention in an 8-pin SOIC package. RoHS compliant, in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 93AA66A-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1357(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
- 1.8V low-voltage operation enabling seamless integration with modern low-power microcontrollers and SoCs in battery-powered designs
- High 1,000,000 write/erase cycle endurance with 200-year data retention ensuring reliable non-volatile storage over the full product lifetime
- Industry-standard 8-pin SOIC package with Microwire-compatible 3-wire SPI interface for simple drop-in replacement and easy PCB layout
Applications
The 93AA66A-I/SN is well-suited for storing configuration parameters, calibration data, and user settings in low-voltage portable devices such as handheld instruments, wearable electronics, and wireless sensor nodes. Its 1.8V operation makes it directly compatible with low-power microcontrollers and ARM-based SoCs without level shifters. The device is also commonly used in automotive infotainment systems and industrial controllers for retaining trim and operational data.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the memory capacity and organization of the 93AA66A-I/SN?
The 93AA66A-I/SN provides 4Kbit (4,096 bits) of EEPROM storage organized as 512 bytes (512x8). This byte-wide organization simplifies firmware access for storing structured configuration records, device identifiers, calibration coefficients, and small lookup tables in embedded systems.
What supply voltage does the 93AA66A-I/SN require?
The 93AA66A-I/SN is designed for 1.8V operation, making it compatible with modern low-power microcontrollers, FPGAs, and application processors that run at 1.8V I/O levels. This eliminates the need for level-shifting circuitry and reduces overall system power consumption.
What serial interface does the 93AA66A-I/SN use?
The 93AA66A-I/SN uses a 3-wire Microwire-compatible serial interface with a maximum clock frequency of 1MHz. The interface uses chip-select (CS), serial clock (SK), and data in/out (DI/DO) lines, which are directly compatible with the SPI port of most microcontrollers operating in Mode 0 or Mode 3.
What is the endurance and data retention rating of the 93AA66A-I/SN?
The 93AA66A-I/SN is rated for a minimum of 1,000,000 write/erase cycles per byte and a minimum data retention of 200 years. These ratings make it appropriate for frequent-update applications such as operational hour counters, configuration change logs, and usage metering in long-life industrial and consumer products.
What package does the 93AA66A-I/SN come in and is it RoHS compliant?
The 93AA66A-I/SN comes in an 8-pin SOIC (Small Outline Integrated Circuit) surface-mount package with a standard 1.27mm pitch. It is fully RoHS compliant and lead-free, meeting European and global environmental directives for use in consumer, automotive, and industrial electronics.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1357 | $0.14 |
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