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AT24C512B-PU25
Microchip Technology
IC EEPROM 512KBIT I2C 1MHZ 8DIP
4510 Pcs New Original In Stock
EEPROM Memory IC 512Kbit I2C 1 MHz 550 ns 8-PDIP
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5.0 / 5.0
- (428 Ratings)
AT24C512B-PU25
Product Overview
1236740
DiGi Electronics Part Number
AT24C512B-PU25-DGManufacturer
Microchip Technology
AT24C512B-PU25
Description
IC EEPROM 512KBIT I2C 1MHZ 8DIPInventory
4510 Pcs New Original In Stock
EEPROM Memory IC 512Kbit I2C 1 MHz 550 ns 8-PDIP
Quantity
Minimum 1
Minimum 1
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AT24C512B-PU25 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
512Kbit
Memory Organization
64K x 8
Memory Interface
I2C
Clock Frequency
1 MHz
Write Cycle Time - Word, Page
5ms
Access Time
550 ns
Voltage - Supply
2.5V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Supplier Device Package
8-PDIP
Base Product Number
AT24C512
Datasheet & Documents
HTML Datasheet
AT24C512B-PU25-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
50
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)
de desembre 02, 2025
전 과정을 친환경적으로 처리하는 모습이 신뢰를 더하게 만듭니다.
de desembre 02, 2025
Leur équipe de support client est très attentive et répond sans délai à toutes mes demandes.
de desembre 02, 2025
Le service après-vente de DiGi Electronics est rapide et efficace, une vraie tranquillité d'esprit pour moi.
de desembre 02, 2025
I've used their components in critical applications, and they haven't failed or shown any signs of wear, demonstrating excellent durability.
de desembre 02, 2025
I’ve been impressed by their affordability and the consistent performance of their offerings.
de desembre 02, 2025
Every purchase feels secure knowing it comes from a company with such high standards.
de desembre 02, 2025
Super fast delivery, and the support team was very patient and thorough in helping me.
de desembre 02, 2025
The site layout is clean and simple, making it easy to explore different options effortlessly.
de desembre 02, 2025
Received my package quickly, and the packaging was excellent—no damages at all.
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Frequently Asked Questions (FAQ)
Can the AT24C512B-PU25 be used as a drop-in replacement for the 24LC512-I/PG in an existing industrial control board design, and what are the key compatibility risks?
The AT24C512B-PU25 can generally replace the 24LC512-I/PG due to identical memory size (512Kbit), I2C interface, and pin compatibility in the 8-PDIP package. However, a critical design-in risk is the difference in write cycle timing: the AT24C512B-PU25 specifies a 5ms page write cycle, while the 24LC512-I/PG may respond faster in some conditions. Ensure your firmware implements proper write cycle polling or sufficient delay to avoid data corruption. Also confirm identical I2C address configuration and that the AT24C512B’s 1 MHz clock support does not exceed the bus capacitance limits of legacy traces. Always verify operation across temperature extremes (-40°C to 85°C), especially in long-running systems.
What are the reliability concerns when using the AT24C512B-PU25 in a high-cycle logging application, such as environmental monitoring with frequent writes?
The AT24C512B-PU25 is rated for 1 million write cycles per memory location, but in high-frequency logging applications, this limit can be reached quickly if the same addresses are reused. To mitigate wear-out, implement wear-leveling algorithms in firmware even with EEPROMs, or distribute writes across address blocks. Avoid continuous page writes without polling for end-of-write, as this can lead to missed ACKs and silent errors. Additionally, ensure VCC is stable during writes—use brown-out detection and decoupling close to the 8-PDIP package pins—to prevent corruption during power-down events.
How does the AT24C512B-PU25 perform on a 3.3V-only I2C bus with 4.7kΩ pull-ups, and is there a risk of signal integrity issues at 1MHz?
The AT24C512B-PU25 supports 1MHz I2C at both 3.3V and 5V, but at 3.3V, ensure bus capacitance stays below 400pF to maintain signal integrity at high speed. Using 4.7kΩ pull-ups is acceptable for short traces (under 10cm), but for longer runs or multi-device buses, consider reducing pull-up strength to 2.2kΩ to improve rise times. Be cautious of ground bounce in through-hole designs; the AT24C512B-PU25’s 550 ns access time allows 1MHz operation, but verify timing margins with worst-case loading. Always include a 0.1μF ceramic capacitor at VCC to reduce noise susceptibility.
Is it safe to redesign with the AT24C512B-PU25 if the original design used the 24AA512-I/P and requires operation near 2.5V minimum supply?
Yes, the AT24C512B-PU25 is safe for use at 2.5V, matching the 24AA512-I/P’s minimum voltage. However, verify that I2C bus logic levels are compatible—devices like the 24AA512 may have lower input thresholds. The AT24C512B-PU25 has standard I2C input levels, so if your microcontroller outputs VOH below 0.7×VCC at 2.5V, communication may fail. Use I2C level translators if driving from a 1.8V or low-power domain. Also, write endurance and data retention (100 years at 55°C) remain valid at 2.5V, but power must remain stable during writes to avoid corruption.
With the AT24C512B-PU25 listed as obsolete, what are the long-term supply and design sustainability risks for a new product rollout?
Despite being marked obsolete, the AT24C512B-PU25 has 4,400 units in stock, but long-term availability is not guaranteed. For new designs, this poses significant supply chain risk. While direct substitutes like the 24LC512-I/PG are available, they may have different timing or packaging. Consider redesigning with the 24FC512-I/P, which offers similar specs with future availability and 1 MHz I2C, but verify compatibility with your timing and noise environment. For legacy repairs or short-run production, the AT24C512B-PU25 is suitable, but for volume manufacturing, transition to an active part to avoid EOL disruptions.
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.
AT24C512B-PU25 CAD Models
Microchip Technology AT24C512B-PU25 PCB symbols & footprints
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