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24AA01T-I/MC
Microchip Technology
IC EEPROM 1KBIT I2C 400KHZ 8DFN
2682 Pcs New Original In Stock
EEPROM Memory IC 1Kbit I2C 400 kHz 3500 ns 8-DFN (2x3)
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5.0 / 5.0
- (294 Ratings)
24AA01T-I/MC
Product Overview
1236137
DiGi Electronics Part Number
24AA01T-I/MC-DGManufacturer
Microchip Technology
24AA01T-I/MC
Description
IC EEPROM 1KBIT I2C 400KHZ 8DFNInventory
2682 Pcs New Original In Stock
EEPROM Memory IC 1Kbit I2C 400 kHz 3500 ns 8-DFN (2x3)
Quantity
Minimum 1
Minimum 1
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24AA01T-I/MC 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
1Kbit
Memory Organization
128 x 8
Memory Interface
I2C
Clock Frequency
400 kHz
Write Cycle Time - Word, Page
5ms
Access Time
3500 ns
Voltage - Supply
1.7V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
8-VFDFN Exposed Pad
Supplier Device Package
8-DFN (2x3)
Base Product Number
24AA01
Datasheet & Documents
HTML Datasheet
24AA01T-I/MC-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
Standard Package
3,300
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Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Packaging was complete and reinforced, giving peace of mind during delivery.
Dec 02, 2025
The website is incredibly user-friendly, making it easy to navigate and find what I need within seconds.
Dec 02, 2025
Product consistency at DiGi Electronics ensures that I receive the same high-quality experience every time.
Dec 02, 2025
The support I receive from their team is consistently professional and helpful.
Dec 02, 2025
DiGi Electronics proves that good quality doesn’t have to come with a high price.
Dec 02, 2025
They are transparent about costs and support, making the entire process trustworthy.
Dec 02, 2025
DiGi Electronics' website provides helpful suggestions and related items to improve my shopping experience.
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Frequently Asked Questions (FAQ)
When replacing a legacy 24LC01B in a 3.3V industrial sensor design, can the 24AA01T-I/MC be used as a drop-in substitute without firmware changes?
The 24AA01T-I/MC is generally compatible with the 24LC01B in terms of memory size (1Kbit), I2C interface, and voltage range (1.7V–5.5V), but critical differences exist: the 24AA01T-I/MC has a faster maximum clock frequency (400 kHz vs. 100 kHz for some 24LC01B variants) and a different page write buffer size (8 bytes vs. 16 bytes). If your firmware assumes 16-byte page writes or relies on specific timing margins, you must update the I2C driver to handle 8-byte pages and verify ACK polling timing. Additionally, confirm the I2C address mapping matches—both use A2/A1/A0 pins, but layout parasitics in dense PCBs may require pull-up resistor tuning due to the 8-DFN package’s smaller footprint.
What are the risks of using the 24AA01T-I/MC in a battery-powered IoT node that wakes every 10 minutes to log data, given its 5ms write cycle time?
The 5ms write cycle time of the 24AA01T-I/MC introduces a real risk of data loss if the MCU does not properly manage power sequencing or write completion. During low-power operation, if the system cuts power before the internal write completes (even after I2C STOP), the EEPROM may corrupt the targeted byte or page. Mitigate this by implementing a write-verification routine with retry logic, adding a small decoupling capacitor (100nF) near the VCC pin to sustain voltage during writes, and using the MCU’s brown-out detection to delay shutdown until writes finish. Also, consider wear leveling—frequent writes to the same address will exceed the 1 million write endurance limit faster than expected in long-life deployments.
Can the 24AA01T-I/MC operate reliably in an automotive under-hood environment where ambient temperatures reach 95°C, despite its rated -40°C to 85°C range?
No—the 24AA01T-I/MC is rated for a maximum operating temperature of 85°C (TA), so sustained exposure to 95°C violates its absolute maximum ratings and risks permanent degradation of data retention and write endurance. Even short-term excursions above 85°C can accelerate oxide breakdown in the EEPROM cells. For under-hood applications, select an AEC-Q100 qualified alternative like the Microchip 24LC01B-I/SN (SOIC-8, -40°C to 125°C) or STMicroelectronics M95M01-DR (125°C-rated). If redesign isn’t feasible, relocate the 24AA01T-I/MC to a cooler zone or add thermal shielding, but this adds cost and complexity without guaranteeing reliability.
How does the 8-DFN (2x3) package of the 24AA01T-I/MC affect PCB assembly yield and thermal performance compared to a standard SOIC-8 footprint?
The 8-DFN (2x3) package with an exposed pad significantly reduces footprint size but increases assembly risk due to finer pitch (0.5mm) and hidden solder joints under the thermal pad. Poor stencil design or misalignment can cause tombstoning or open connections, especially on high-volume SMT lines. Use a laser-cut stencil with 50–70% aperture reduction on the thermal pad and include solder paste on all pins. Thermally, the exposed pad improves junction-to-board heat transfer, which helps during repeated write cycles, but ensure the PCB has a solid ground plane connected to the pad for optimal performance. Avoid using this package in hand-soldered prototypes unless you have hot-air rework tools and X-ray inspection capability.
Is it safe to share the I2C bus between the 24AA01T-I/MC and other 5V-tolerant peripherals when operating at 3.3V, and what pull-up resistor values should be used?
Yes, the 24AA01T-I/MC can share an I2C bus with 5V-tolerant devices when operated at 3.3V, thanks to its 5.5V-tolerant I/O pins. However, mixed-voltage I2C buses require careful pull-up resistor selection: use 3.3V pull-ups (typically 2.2kΩ to 4.7kΩ) on SDA/SCL to ensure valid logic levels for all devices. Avoid 5V pull-ups, as they may overdrive the 3.3V MCU inputs. Also, verify that all devices support 400 kHz Fast-mode I2C—some 5V sensors only support 100 kHz. If bus capacitance exceeds 400 pF (common in long traces or multi-drop layouts), reduce pull-up values to 1kΩ or add an I2C buffer like the PCA9515A to maintain signal integrity and prevent timing violations during EEPROM writes.
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.
24AA01T-I/MC CAD Models
Microchip Technology 24AA01T-I/MC PCB symbols & footprints
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