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93AA66CT-I/MNY
Microchip Technology
IC EEPROM 4KBIT MICROWIRE 8TDFN
4157 Pcs New Original In Stock
EEPROM Memory IC 4Kbit Microwire 3 MHz 8-TDFN (2x3)
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5.0 / 5.0
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93AA66CT-I/MNY
Product Overview
1238815
DiGi Electronics Part Number
93AA66CT-I/MNY-DGManufacturer
Microchip Technology
93AA66CT-I/MNY
Description
IC EEPROM 4KBIT MICROWIRE 8TDFNInventory
4157 Pcs New Original In Stock
EEPROM Memory IC 4Kbit Microwire 3 MHz 8-TDFN (2x3)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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93AA66CT-I/MNY Technical Specifications
Category
Memory, Memory
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
DiGi-Electronics Programmable
Not Verified
Memory Type
Non-Volatile
Memory Format
EEPROM
Technology
EEPROM
Memory Size
4Kbit
Memory Organization
512 x 8, 256 x 16
Memory Interface
Microwire
Clock Frequency
3 MHz
Write Cycle Time - Word, Page
6ms
Voltage - Supply
1.8V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
8-WFDFN Exposed Pad
Supplier Device Package
8-TDFN (2x3)
Base Product Number
93AA66
Datasheet & Documents
HTML Datasheet
93AA66CT-I/MNY-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0051
Additional Information
Other Names
93AA66CT-I/MNY-DG
150-93AA66CT-I/MNYCT
150-93AA66CT-I/MNYDKR
150-93AA66CT-I/MNYTR
Standard Package
3,300
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
DiGi Electronics sait fidéliser ses clients grâce à ses prix attractifs et son service après-vente efficace.
de desembre 02, 2025
Ils allient parfaitement qualité, fiabilité et prix modéré.
de desembre 02, 2025
The customer service from DiGi Electronics was prompt and very helpful, making my shopping experience excellent.
de desembre 02, 2025
The pricing at DiGi Electronics is very competitive, and their after-sales response enhances the overall value.
de desembre 02, 2025
I've always appreciated their professional approach—solutions and advice are clear and effective.
de desembre 02, 2025
The quality assurance after purchase is impressive, making me a loyal customer.
de desembre 02, 2025
I admire their dedication to quality, which is reflected in every item.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when selecting the 93AA66CT-I/MNY for low-voltage battery-powered applications operating near 1.8V?
When designing the 93AA66CT-I/MNY into low-power systems, ensure that the power supply remains stable above 1.8V during write operations, as the device requires full compliance within its 1.8V to 5.5V supply range. Voltage droop during battery depletion or load transients can cause incomplete page writes or corruption. To mitigate risk, implement brown-out detection or delay write cycles until stable voltage is confirmed. Additionally, verify that the host controller's I/O levels remain compatible with the 93AA66CT-I/MNY's logic thresholds at low VCC—Microchip's Microwire interface may require VIH ≥ 0.7×VCC, which can be marginal under 2.0V operation.
How does the 93AA66CT-I/MNY compare to the 24LC025 in terms of interface compatibility and PCB footprint when migrating from I2C to Microwire?
The 93AA66CT-I/MNY uses a 3-wire Microwire interface (CS, SK, DI/DO), which is not pin- or protocol-compatible with the I2C-based 24LC025, despite both being 4Kbit EEPROMs. Migrating to the 93AA66CT-I/MNY requires redesigning the control software and GPIO assignments. However, the 8-TDFN (2x3 mm) package is smaller than many I2C alternatives, saving board space. Use level shifters if interfacing with 5V microcontrollers, as the 93AA66CT-I/MNY is not 5V tolerant on inputs. Consider the reduced pin count as a layout advantage but account for lack of bus arbitration and multi-device support on shared Microwire lines.
Can the 93AA66CT-I/MNY reliably replace the NM93C06 in legacy designs, and what are the critical compatibility concerns?
The 93AA66CT-I/MNY can serve as a functional replacement for the NM93C06 in many 4Kbit Microwire applications, but engineers must verify instruction set alignment—Microchip's 93AA66 series supports both 8-bit and 16-bit organization via the ORG pin, whereas the NM93C06 typically defaults to one mode. Ensure the opcode sequence (e.g., WRITE, READ, EWEN) matches exactly, as timing and command structure vary slightly between manufacturers. Also confirm that the 6ms write cycle time is acceptable for your throughput needs. Test under worst-case temperature and voltage conditions to avoid timing margin issues in field deployment.
What PCB layout and thermal considerations should be addressed for the 8-TDFN exposed pad package of the 93AA66CT-I/MNY in high-density designs?
The 8-TDFN (2x3 mm) package of the 93AA66CT-I/MNY includes an exposed thermal pad that should be soldered to a ground plane via multiple vias to ensure mechanical stability and thermal dissipation, even though power dissipation is low. In high-density layouts, maintain adequate creepage and clearance distances—especially if operating at 5.5V. Avoid placing sensitive analog traces underneath or adjacent to the device due to potential switching noise on the Microwire lines. Ensure the reflow profile complies with MSL1 requirements, and clean flux residues thoroughly to prevent leakage currents in high-humidity environments.
What long-term reliability risks exist when using the 93AA66CT-I/MNY in automotive or industrial environments near 85°C, and how can endurance be maximized?
While the 93AA66CT-I/MNY is rated for -40°C to 85°C and offers 1M write cycles, operating near 85°C accelerates wear-out mechanisms in EEPROM cells. Limit frequent page writes by implementing wear-leveling in firmware, even for small data updates. Enable the write-protect function when not in use to prevent accidental overwrites. Data retention at elevated temperatures may drop below 200 years—verify retention margin for mission-critical applications. Avoid hot-plugging or live-power insertion, as this can trigger latent corruption. For industrial deployments, monitor error rates over time and consider checksums or ECC on stored data.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
93AA66CT-I/MNY CAD Models
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