AT28HC256-90TU More Semiconductors - ICs by Microchip Technology

5V High-Speed 256Kbit (32Kbit x 8) Parallel EEPROM

Status: Active
Series: AT28HC256
RoHS: Compliant
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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.

Prices starting from US$10.01


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Features

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)

Specifications

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

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.2321
Shipping Weight (kg) 1.696581
Lead Count 28
Package Type TSOP
Package Width or Size 8x11.8x1mm
Soldering Composition Matte Tin

Alternative Descriptions

EEPROM, 256KBIT, -40 TO 85DEG C | Farnell


Frequently Asked Questions

Where can I find additional details, specifications and documents for a AT28HC256-90TU?

Additional datasheets, footprints and schematics for AT28HC256-90TU are listed on our Part Details page. You can also find images and similar parts to AT28HC256-90TU on this page.

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What category does AT28HC256-90TU fall under?

The AT28HC256-90TU is listed under Semiconductors - ICs > More Semiconductors - ICs.

Can I view similar or alternative parts?

You can view similar parts to AT28HC256-90TU when available in the More Semiconductors - ICs range under the specifications section at the bottom of the details page.

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Is the AT28HC256-90TU RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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Authorised distributors including Farnell have stock available or on a lead time for AT28HC256-90TU.

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