93AA66C-I/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
The 93AA66C-I/MS is a 4Kbit (512x8 or 256x16) EEPROM with SPI interface in a compact MSOP-8 package. It offers 1,000,000 write/erase cycles, 200-year data retention, and up to 3 MHz clock. Available from stock worldwide with competitive pricing.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 93AA66C-I/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3205(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 93AA66C-I/MS?
- Configurable memory organization as 512x8 or 256x16 bits providing flexible data width for diverse microcontroller architectures
- 1,000,000 write/erase cycle endurance combined with 200-year minimum data retention ensuring long-term reliability
- 3 MHz SPI-compatible interface in ultra-compact MSOP-8 package enabling high-density PCB designs
What is 93AA66C-I/MS used for?
The 93AA66C-I/MS is ideal for storing configuration data, calibration constants, and user preferences in embedded systems where non-volatile retention is critical. Its dual-width flexibility suits both 8-bit and 16-bit microcontroller environments found in industrial sensors, smart meters, and consumer electronics. The MSOP-8 package enables space-efficient placement on dense PCBs in wearables and IoT edge devices.
What are the specifications of 93AA66C-I/MS?
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 23Weeks |
| 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 | S-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 | 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 |
| 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 |
Where can I find the 93AA66C-I/MS datasheet?
93AA66C-I/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 93AA66C-I/MS?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the memory capacity and organization of the 93AA66C-I/MS?
The 93AA66C-I/MS provides 4Kbits of EEPROM storage configurable as 512 words x 8 bits or 256 words x 16 bits. This dual-mode organization allows seamless use with both 8-bit and 16-bit microcontrollers without additional logic, making it highly versatile for embedded system designs.
What is the endurance and data retention specification for the 93AA66C-I/MS?
The 93AA66C-I/MS is rated for a minimum of 1,000,000 write/erase cycles per memory location, ensuring reliability across high-frequency update applications. Data retention is specified at a minimum of 200 years, making it suitable for archival storage and long-life industrial equipment.
What package does the 93AA66C-I/MS use?
The 93AA66C-I/MS is housed in an MSOP-8 (Mini Small Outline Package, 8-pin) surface mount package, designated by the JESD-30 code S-PDSO-G8. This compact package is approximately 30% smaller than standard SOIC-8, enabling high-density PCB layouts in space-constrained applications.
What alternatives exist to the 93AA66C-I/MS?
Direct alternatives include the 93LC66 (3.3V CMOS version) and 93C66 (3V or 5V selection), all from Microchip in MSOP-8. For I2C-based alternatives with similar capacity, the 24AA32 (4Kbyte I2C EEPROM) is compatible. Atmel's AT93C66 is a pin-compatible substitute with identical capacity and interface.
Is the 93AA66C-I/MS RoHS compliant and what is its operating temperature range?
Yes, the 93AA66C-I/MS carries Pbfree Code 'Yes', confirming it is lead-free and RoHS compliant. The -I suffix indicates an industrial temperature range of -40°C to +85°C, making it suitable for automotive-adjacent and industrial applications requiring extended environmental performance.
Related Guides
ICL7660ACPAZ Negative Voltage Charge Pump Design Guide
Design a reliable ICL7660ACPAZ negative rail with capacitor equations, layout rules, startup checks, and practical troubleshooting.
Aug 2, 2026
C0402C103K3RACTU 10 nF MLCC Design Guide
Practical guidance for applying the C0402C103K3RACTU 10 nF, 25 V X7R MLCC in decoupling, filtering, timing, and EMI-control networks.
Aug 2, 2026
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4400 | $0.44 |
| 10+ | $0.4200 | $4.20 |
| 25+ | $0.4000 | $10.00 |
| 100+ | $0.3700 | $37.00 |
| 1000+ | $0.3500 | $350.00 |
| 4000+ | $0.3205 | $1281.92 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit