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AT24C32A-10TU-1.8
Microchip Technology
IC EEPROM 32KBIT I2C 8TSSOP
19962 Pcs New Original In Stock
EEPROM Memory IC 32Kbit I2C 400 kHz 900 ns 8-TSSOP
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5.0 / 5.0
- (185 Ratings)
AT24C32A-10TU-1.8
Product Overview
1290935
DiGi Electronics Part Number
AT24C32A-10TU-1.8-DGManufacturer
Microchip Technology
AT24C32A-10TU-1.8
Description
IC EEPROM 32KBIT I2C 8TSSOPInventory
19962 Pcs New Original In Stock
EEPROM Memory IC 32Kbit I2C 400 kHz 900 ns 8-TSSOP
Quantity
Minimum 1
Minimum 1
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AT24C32A-10TU-1.8 Technical Specifications
Category
Memory, Memory
Packaging
-
Series
-
Product Status
Obsolete
DiGi-Electronics Programmable
Not Verified
Memory Type
Non-Volatile
Memory Format
EEPROM
Technology
EEPROM
Memory Size
32Kbit
Memory Organization
4K x 8
Memory Interface
I2C
Clock Frequency
400 kHz
Write Cycle Time - Word, Page
5ms
Access Time
900 ns
Voltage - Supply
1.8V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
8-TSSOP
Base Product Number
AT24C32
Datasheet & Documents
HTML Datasheet
AT24C32A-10TU-1.8-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
100
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
재고 관련 문제없이 안정적인 서비스에 항상 감사하게 생각합니다.
Dec 02, 2025
配送予定の時間もきちんと守られていました。
Dec 02, 2025
包装の強度が非常に高く、大型の荷物も問題なく届けられました。
Dec 02, 2025
The shipping was prompt, with no delays, and the products continue to perform reliably over time.
Dec 02, 2025
The after-sales team was very attentive, ensuring I was satisfied with my purchase and offering additional support.
Dec 02, 2025
They process and ship orders very fast, which helps me plan my projects better.
Dec 02, 2025
The response time from DiGi Electronics' customer service is exceptional—quick and highly professional.
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Frequently Asked Questions (FAQ)
Can the AT24C32A-10TU-1.8 be safely replaced with a M24C32-WDW6TP in a 3.3V industrial control system, and what design risks should I evaluate before making the swap?
While the M24C32-WDW6TP is listed as a substitute for the AT24C32A-10TU-1.8 and shares similar electrical characteristics, you must verify I²C address compatibility, page write buffer behavior, and endurance specifications before replacement. The AT24C32A-10TU-1.8 uses a fixed base address (1010xxx), whereas the M24C32 allows more flexible addressing via pin strapping—this could cause bus conflicts if not reconfigured. Additionally, the M24C32 has a slightly faster max clock speed (1 MHz vs. 400 kHz), which may stress slower microcontrollers on the same bus. Always validate timing margins under worst-case voltage (1.8V) and temperature (-40°C) conditions, and confirm that your firmware handles the 5 ms write cycle time consistently across both devices to avoid data corruption during power-loss scenarios.
Is it safe to operate the AT24C32A-10TU-1.8 at 1.8V in a battery-powered IoT node where supply voltage may dip below 1.8V during brownout conditions?
Operating the AT24C32A-10TU-1.8 below its specified 1.8V minimum supply voltage—even briefly—can lead to undefined behavior, including failed writes or corrupted memory states. In battery-powered designs, voltage dips during transmit bursts or load transients are common. To mitigate risk, implement a supervisor circuit with a precision reset threshold (e.g., 1.75V) to disable I²C transactions when VCC is unstable. Alternatively, consider using a part like the 24AA32AF-I/ST, which guarantees operation down to 1.7V and includes built-in write protection during undervoltage events. Never rely solely on software polling; hardware-level protection is essential for data integrity in marginal power environments.
How does the AT24C32A-10TU-1.8 handle concurrent I²C bus access when multiple masters (e.g., MCU and debug probe) are connected, and what failure modes should I anticipate?
The AT24C32A-10TU-1.8 does not include built-in arbitration logic for multi-master I²C systems. If two masters attempt to access the device simultaneously—such as during firmware debugging while the main application is running—it can result in bus contention, ACK/NACK confusion, or partial writes that corrupt memory pages. This is especially risky during page writes (up to 32 bytes), which are not atomic. To prevent this, implement software mutexes or hardware I²C multiplexers (e.g., PCA9546A) to isolate access paths. Additionally, ensure your I²C pull-up resistors are sized correctly for bus capacitance at 400 kHz; weak pull-ups increase rise time and exacerbate timing conflicts during arbitration failures.
Can I use the AT24C32A-10TU-1.8 in an automotive under-hood application with ambient temperatures reaching 105°C, given its -40°C to 85°C rating?
No—the AT24C32A-10TU-1.8 is not suitable for sustained operation above 85°C, and exceeding this limit voids reliability guarantees and may cause data retention failure. Automotive under-hood environments often exceed 105°C, pushing the junction temperature beyond safe limits even with minimal self-heating. For such applications, select an AEC-Q100 qualified alternative like the BR24G32FVT-3AGE2, which is rated for -40°C to 125°C and includes enhanced ESD protection. If you must use the AT24C32A-10TU-1.8, consider relocating it to a cooler zone (e.g., cabin interior) or adding thermal shielding—but this introduces wiring complexity and potential EMI issues. Never compromise on temperature ratings for non-volatile memory storing calibration or safety-critical data.
What are the long-term reliability risks of using the AT24C32A-10TU-1.8 in a high-write-cycle application like event logging, and how can I extend its lifespan?
The AT24C32A-10TU-1.8 supports up to 1 million write cycles per memory location, but frequent logging can wear out specific pages prematurely, leading to bit errors or complete sector failure. To maximize lifespan, implement wear-leveling in firmware by rotating writes across the entire 4K x 8 address space and avoid repeatedly writing to the same page. Use a circular buffer strategy and monitor write counts if possible. Additionally, ensure each write is followed by a sufficient delay (≥5 ms) to allow full internal programming—interrupting this cycle may leave data in an indeterminate state. For mission-critical logging, consider pairing the EEPROM with a small FRAM (e.g., FM24C16) for high-frequency writes, reserving the AT24C32A-10TU-1.8 for infrequent configuration storage.
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.
AT24C32A-10TU-1.8 CAD Models
Microchip Technology AT24C32A-10TU-1.8 PCB symbols & footprints
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