Status: | Active |
---|---|
Series: | AT28HC256 |
RoHS: | Compliant |
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) |
Density (Organization) | 256Kb |
---|---|
Operating Voltage Min. (V) | 4.5 |
Oper Voltage Max (V) | 5.5 |
Read Access Speed (Par Flash) | 70/90/120ns |
Page Size (bytes) | 0 |
Write Protected | False |
Endurance | 10k Cycles |
Data Retention (Years) | 10 |
Battery Backup | False |
Pins | Packaging | 32 | PLCC |
Temp Range | -40C to +85C |
Packing Media | Tape and reel (750) |
Data Sheets |
---|
AT28HC256 Industrial Grade 256-Kbit (32,768 x 8) High-Speed Parallel EEPROM |
AT28HC256 - Military Grade 256-Kbit (32,768 x 8) High-Speed Parallel EEPROM |
Application Notes |
---|
AN_3317 - Support for Third Party Memory Devices Programmer Sources |
AN_0543 - EEPROM Data Protection |
AN_0545 - Programmer Support for Parallel EEPROMs |
AN_0544 - Software Chip Erase |
Miscellaneous |
---|
Standard Microcircuit Drawings Product Offering |
Supporting Collateral |
---|
Parallel EEPROM Die Products |
JEDEC Indicator | e3 |
---|---|
ROHS | Compliant |
China EFUP | Compliant |
Device Weight (g) | 1.129 |
Shipping Weight (kg) | 1.896 |
Lead Count | 32 |
Package Type | PLCC |
Package Width or Size | 11.5x14x3.37mm |
Soldering Composition | Matte Tin |
70NS, PLCC, IND TEMP, GREEN | Microchip Technology |
Eeprom, 256Kbit, -40 To 85Deg C | Newark Electronics |
High-Speed Parallel EEPROM 256K-bit 32K x 8 70ns 80mA 32-Pin PLCC T/R | Avnet America |
EEPROM, 256KBIT, -40 TO 85DEG C | Farnell |
Where can I find additional details, specifications and documents for a AT28HC256-70JU-T?
Additional datasheets, footprints and schematics for AT28HC256-70JU-T are listed on our Part Details page. You can also find images and similar parts to AT28HC256-70JU-T on this page.
What pricing and inventory information can I view?
Distributor pricing and stock information is available for AT28HC256-70JU-T on our Product Comparison page. Access via the 'View Pricing & Stock' button to view AT28HC256-70JU-T price breaks, MOQs, lead times, inventory and SKUs from distributors.
Who can I contact for technical support of the product?
Submit any questions directly to the customer support team of the distributor listing the product. For the AT28HC256-70JU-T you can contact the distributor directly for product support, shipping queries etc.
Is the AT28HC256-70JU-T RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Microchip Technology.
Which authorised distributors for AT28HC256-70JU-T have stock available?
Authorised distributors including Microchip Technology, Newark Electronics, Avnet America and Farnell have stock available or on a lead time for AT28HC256-70JU-T.
How do I check stock and lead times for all distributors?
Stock availability and lead times will be displayed for AT28HC256-70JU-T often in real-time on the comparison pages.
What if I can't find stock of AT28HC256-70JU-T?
You can fill out our help required form which you can use to request a quote for AT28HC256-70JU-T from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.