93AA66C-I/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
93AA66C-I/P is a 4 Kbit Microwire-compatible serial EEPROM organized as 256 x 16 or 512 x 8 bits, with up to 3 MHz clock, 1 million write/erase cycles, and 200-year data retention in an 8-pin DIP package. Ideal for non-volatile parameter storage in embedded systems.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 93AA66C-I/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3136(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 Kbit capacity configurable as 256 x 16-bit or 512 x 8-bit organization
- Microwire-compatible serial interface with up to 3 MHz clock frequency
- 1,000,000 write/erase cycle endurance for high-reliability applications
- 200-year minimum data retention for long-life deployments
- Low-voltage operation from 1.8 V to 5.5 V
- 8-pin DIP package for easy prototyping and through-hole assembly
Applications
93AA66C-I/P is used for storing calibration constants, configuration parameters, and serial number data in industrial control units, medical devices, and consumer appliances. Its 1 million write cycle endurance makes it suitable for frequently updated data such as usage counters or event logs. The through-hole DIP package simplifies prototyping and is favored in legacy industrial designs requiring manual board assembly.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-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 | R-PDIP-T8 |
| 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 | 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 is the 4 Kbit memory of 93AA66C-I/P organized and can the width be changed?
The 93AA66C-I/P organizes its 4 Kbit memory as 256 x 16-bit words by default, but it can be reconfigured to 512 x 8-bit bytes using the ORG pin. This flexibility lets designers match the memory width to their microcontroller's preferred data bus width without changing the IC.
What write endurance and data retention does 93AA66C-I/P guarantee for high-reliability storage?
93AA66C-I/P guarantees a minimum endurance of 1,000,000 write/erase cycles per memory location and a data retention of at least 200 years. This makes it reliable for applications that update configuration data frequently, such as industrial calibration records or appliance settings across years of field operation.
At what clock speed does the Microwire interface of 93AA66C-I/P operate and how does that compare to SPI-based EEPROMs?
93AA66C-I/P supports a Microwire serial clock up to 3 MHz, which is sufficient for typical embedded configuration-data reads and writes. SPI-based EEPROMs such as the 25AA series can reach 10 MHz or higher, so for throughput-critical bulk data transfer an SPI EEPROM is faster, but the 3 MHz Microwire interface is ample for storing a few hundred bytes of calibration or configuration data.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4800 | $0.48 |
| 10+ | $0.4300 | $4.30 |
| 25+ | $0.3900 | $9.75 |
| 100+ | $0.3626 | $36.26 |
| 250+ | $0.3136 | $78.40 |
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