AT28HC256F-90SU-T by Microchip Technology

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

Status: Active
Series: AT28HC256
RoHS: Compliant
View Datasheet Manufacturer Site View Pricing & Stock

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$12.25


Distributor Starting From Stock
Logo for Microchip Technology Microchip Technology US$12.25
1,000
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Logo for Newark Electronics Newark Electronics US$14.15
-
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Logo for Avnet America Avnet America US$14.83
-
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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
Pins | Packaging 28 | SOIC
Temp Range -40C to +85C
Packing Media Tape and reel (1000)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.7704
Shipping Weight (kg) 1.1525
Lead Count 28
Package Type SOIC
Package Width or Size .300in
Soldering Composition Matte Tin

Alternative Descriptions

90NS, SOIC, IND TEMP, GREEN | Microchip Technology
Eeprom, 256Kbit, -40 To 85Deg C | Newark Electronics
AT28HC256F-90SU-T | Avnet America
EEPROM, 256KBIT, -40 TO 85DEG C | Farnell


Frequently Asked Questions

Where can I find additional details, specifications and documents for a AT28HC256F-90SU-T?

Additional datasheets, footprints and schematics for AT28HC256F-90SU-T are listed on our Part Details page. You can also find images and similar parts to AT28HC256F-90SU-T on this page.

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Is the AT28HC256F-90SU-T RoHS compliant?

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

Which authorised distributors for AT28HC256F-90SU-T have stock available?

Authorised distributors including Microchip Technology, Newark Electronics, Avnet America and Farnell have stock available or on a lead time for AT28HC256F-90SU-T.

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