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AT28C256-15PC
Microchip Technology
IC EEPROM 256KBIT PARALLEL 28DIP
2112 Pcs New Original In Stock
EEPROM Memory IC 256Kbit Parallel 150 ns 28-PDIP
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Minimum 1
5.0 / 5.0
- (442 Ratings)
AT28C256-15PC
Product Overview
1259282
DiGi Electronics Part Number
AT28C256-15PC-DGManufacturer
Microchip Technology
AT28C256-15PC
Description
IC EEPROM 256KBIT PARALLEL 28DIPInventory
2112 Pcs New Original In Stock
EEPROM Memory IC 256Kbit Parallel 150 ns 28-PDIP
Quantity
Minimum 1
Minimum 1
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365 - Day Quality Guarantee - Every part fully backed.
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AT28C256-15PC 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
256Kbit
Memory Organization
32K x 8
Memory Interface
Parallel
Write Cycle Time - Word, Page
10ms
Access Time
150 ns
Voltage - Supply
4.5V ~ 5.5V
Operating Temperature
0°C ~ 70°C (TC)
Mounting Type
Through Hole
Package / Case
28-DIP (0.600", 15.24mm)
Supplier Device Package
28-PDIP
Base Product Number
AT28C256
Datasheet & Documents
HTML Datasheet
AT28C256-15PC-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0051
Additional Information
Standard Package
14
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
L'étendue de leur gamme de produits est impressionnante, assurant que chaque utilisateur trouve ce qui lui convient.
Dec 02, 2025
Die freundliche und kompetente Beratung im Laden hat meinen Einkauf zu einem echten Vergnügen gemacht.
Dec 02, 2025
Ihre Produkte sind langlebig, und der Kundenservice bleibt stets freundlich und kompetent.
Dec 02, 2025
Always on time—sending my orders swiftly and accurately every time.
Dec 02, 2025
The clear pricing structure provided by DiGi Electronics helps me plan my budget without surprises.
Dec 02, 2025
Their commitment to fast shipping and quality products has earned my loyalty as a maker.
Dec 02, 2025
Their commitment to transparency makes me feel valued as a customer.
Dec 02, 2025
The after-sales support team is responsive and solution-oriented.
Dec 02, 2025
Shipping logistics are well-managed, ensuring quick delivery.
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Frequently Asked Questions (FAQ)
Can the AT28C256-15PC be used as a direct replacement for the AT28C256-15PU in an existing through-hole design, and are there any mechanical or thermal concerns?
Yes, the AT28C256-15PC can directly replace the AT28C256-15PU in through-hole applications, as both share the same 28-PDIP package and electrical specifications. However, verify that local board airflow or enclosed environments won’t push operating temperatures beyond 70°C, as the AT28C256-15PC is rated only up to 70°C (TC) and lacks extended temperature grading. Also confirm pin alignment and socket compatibility if used in field-replaceable modules.
What are the key design-in risks when selecting the AT28C256-15PC given its obsolete status from Microchip Technology?
The primary risk in designing with the AT28C256-15PC is long-term availability—being marked as obsolete increases the likelihood of supply chain disruption. While 2017pcs are currently in stock with this supplier, future production runs may require redesign. Mitigate this by securing lifetime buys or evaluating feasible upgrades like serial EEPROMs (e.g., 24LC256) with I2C interface, though this requires changes to the memory bus architecture and firmware.
How does the 10ms word/page write cycle time of the AT28C256-15PC impact real-time system performance in embedded data logging applications?
The 10ms write cycle time of the AT28C256-15PC imposes significant latency during active data logging—if the host processor attempts reads or writes during this period, it must poll the output enable or detect write completion via RDY/BSY pin. To avoid data corruption, ensure firmware includes timeout handling and avoids bus contention. Consider buffering data externally or using shadow RAM if frequent writes degrade system responsiveness.
Is the AT28C256-15PC suitable for industrial environments near the edge of its 0°C to 70°C temperature range, and what reliability issues might occur?
The AT28C256-15PC is rated for commercial temperatures (0°C to 70°C), making it marginal for industrial use where ambient conditions may fluctuate at the extremes. Operation near 70°C can accelerate wearout mechanisms in EEPROM cells, reducing endurance below the rated 100,000 write cycles. To improve reliability, implement write throttling, error detection codes, and thermal monitoring—especially in sealed enclosures without airflow.
What are the implications of using the AT28C256-15PC in a RoHS-compliant assembly when it’s labeled as RoHS non-compliant?
Using the AT28C256-15PC in a RoHS-compliant product violates lead-free manufacturing requirements due to its leaded packaging and materials. This limits market access in regions enforcing RoHS, including the EU. If legacy compatibility demands this device, it must be classified under RoHS exemptions (e.g., Category 8 for medical or industrial equipment), but full documentation and compliance review are essential to avoid regulatory risk.
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.
AT28C256-15PC CAD Models
Microchip Technology AT28C256-15PC PCB symbols & footprints
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