Microchip AT28HC256-12SU-T
Manufacturer No:
AT28HC256-12SU-T
Manufacturer:
Microchip
Package:
28-SOIC (0.295, 7.50mm Width)
Description:
5V High-Speed 256Kbit (32Kbit x 8) Parallel EEPROM
Quantity:
In Stock :7383
Looking for price or availability? Send us an RFQ and our sales team will respond quickly.
Shipping & Availability
Fast worldwide shipping via DHL, FedEx, UPS, and EMS.
Shipped from：HK Warehouse
Expected Shipping：Mon, Jun 22 - Tue, Jun 23, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
Payment
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Certified in-house inspection and testing facilities ensure all components meet internationally recognized quality standards.
User Guide
Available from AS9120 Certified Supplier, AIChipLink delivers high-reliability electronic components supported by certified quality management, rigorous inspection processes, counterfeit mitigation controls, and full traceability systems. Our operations comply with AS9120, ISO 9001:2015, and IECQ ESD standards to support aerospace, industrial, defense, and mission-critical applications.
PURCHASE
Please verify all part numbers, quantities, and packaging preferences before placing your order. If substitutions are acceptable, please indicate this clearly. For time-sensitive projects, confirm estimated delivery dates and stock availability in advance. Once submitted, changes or cancellations may not be possible, especially for items marked as non-cancellable/non-returnable (NCNR). For international shipments, please ensure all import documentation is complete and accurate to avoid delays.
MEANS OF PAYMENTFor your convenience, we accept multiple payment methods in USD, including PayPal, Credit Card, and Wire Transfer. Net terms may be available for qualified customers upon approval.
RFQ (REQUEST FOR QUOTATIONS)Please ensure the part numbers and quantities are accurate and complete when submitting your RFQ.
Provide target prices and acceptable alternatives, if any, to speed up the quotation process.
Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.
Step1：Prepare product
Step2：Desiccant Protection
Step3：Vacuum Packaging
Step4：Individual Package
Step5：Anti-collision Filling
Step6：Packaging Box
SHIPPING COST
1. Shipping starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).
2. Some specific products need to reach the minimum order quantity.
3. It may cost additional remote fees for delivery if you are in a remote area.
Currently, our products are shipped through DHL, FedEx, SF, and UPS.
DELIVERY TIME1. Once the goods are shipped, estimated delivery time depends on the shipping methods you chose: FedEx International, 5-7 business days.
2. For in-stock parts, orders normally could be shipped out within 1-2days.
AT28HC256-12SU-T Information
Microchip AT28HC256-12SU-T technical specifications, attributes, parameters and parts with similar specifications to Microchip AT28HC256-12SU-T.
- Type
- Parameter
- Battery Backup
- No
- Density
- 256 Kbit
- Endurance
- 10,000
- Max. Clock Freq.
- 0
- Operating Voltage Max (V)
- 5.5
- Operating Voltage Min (V)
- 4.5
- Page Size (Bytes)
- 0
- Write Protected
- No
- Data Retention
- 10
- Read Access Speed
- 70/90/120ns
- Type
- Parameter
Download datasheets and manufacturer documentation for Microchip AT28HC256-12SU-T.
Application Notes:
Supporting Collateral:
Miscellaneous:
The Microchip AT28HC256 is a high-performance 256Kbit Parallel EEPROM available in both Industrial and Military temp ranges, offering access times to 70ns with power dissipation of 440mW. Deselected, CMOS standby current is less than 5mA. Accessed like static RAM for the read or write cycle without external components, it contains a 64-byte page register to allow writing of up to 64 bytes simultaneously. Features an internal Error Correction Circuit for extended endurance and improved data retention, in Military version. Optional Software Data Protection mechanism guards against inadvertent writes; and an extra 64 bytes of EEPROM enables device identification or tracking.
The AT28HC256 is also available DUAL MARKED where applicable with the appropriate Standard Military Drawing Number - 5962-886340xxx. See the datasheet for exact MIL product availability.
- 32 Kbits x 8 (256 Kbit)
- 5V ± 10% Supply
- Parallel Interface
- AT28HC256E - High Endurance 100K Write Cycles Option
- AT28HC256F - 3 ms Fast Write Option
- 70ns access time
- Self-Timed Erase and Write Cycles (10 ms max)
- Page Write and Byte Write
- Data Polling for end of write detection
- Low Power Consumption
- Read / Write current 80 mA (Max)
- Standby current TTL 3 mA (Max), CMOS 300 µA (Max)
- Write-Protection
- Hardware Protection
- Software Data Protect
- Data retention > 10 years
- Temperature Ranges
- Standard Temperature Range: -40°C to 85°C
- Military Temperature Range: -55°C to 125°C
- Available in Green (Pb/Halide-free) Packaging
- 32-lead, Plastic J-leaded Chip Carrier (PLCC)
- 28-lead, 0.300" Wide, Plastic Gull Wing Small Outline (SOIC)
- 28-lead, Plastic Thin Small Outline Package (TSOP)
- Available in Dual marked (5962-886340xxx) CERAMIC Hermetic Packaging
- 28-Lead, 0.600" Wide, Non-Windowed, Ceramic Dual Inline (Cerdip)
- 28-Lead, Non-Windowed, Ceramic Bottom-Brazed Flat Package (Flatpack)
- 32-Pad, Non-windowed, Ceramic, Leadless Chip Carrier (LCC)
AT28HC256-12SU-T FAQ
Can I request a quote for AT28HC256-12SU-T?
AT28HC256-12SU-T from Microchip is ready for RFQ submission. Send your target quantity and requirements, and AIChipLink will check current availability, lead time, and quantity-based pricing.
Why is pricing not shown as a fixed value for AT28HC256-12SU-T?
The final price for AT28HC256-12SU-T depends on requested quantity, supply conditions, date code, package option, and destination. An RFQ lets us return the current market quote for your order.
Which specifications should I review for AT28HC256-12SU-T?
AT28HC256-12SU-T is a Microchip Memory part. Key details include Operating Voltage Max (V): 5.5 and Operating Voltage Min (V): 4.5; contact us if you need the specifications verified before sourcing.
When will I receive a quotation for AT28HC256-12SU-T?
After you submit the RFQ for AT28HC256-12SU-T, our sales team typically replies within 24 hours with availability, unit pricing, lead time, shipping choices, and possible substitutes.
What is the expected shipping time for AT28HC256-12SU-T?
Once stock for AT28HC256-12SU-T is confirmed, available inventory can generally ship within 1–2 business days. The final schedule depends on quantity, warehouse source, and delivery address.
Can AIChipLink help find alternatives to AT28HC256-12SU-T?
Yes. If AT28HC256-12SU-T is unavailable, end-of-life, or outside your schedule, we can review comparable Microchip Memory parts and compatible replacement options.
AIChipLink – Your Trusted Electronic Components Distributor
12.28 M
Listed Part Number
3,000+
Leading Manufacturers
4.9 M
In-stock SKU
15,000+
Warehouse Area(㎡)
