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HomeProductsIntegrated Circuits (ICs)MemoryAT28HC256-90SU
AT28HC256-90SU Image
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See specifications for product details.

AT28HC256-90SU - Microchip Technology

Manufacturer Part Number
AT28HC256-90SU
Manufacturer
Microchip Technology
Allelco Part Number
32D-AT28HC256-90SU
ECAD Model
Parts Description
IC EEPROM 256KBIT PAR 28SOIC
Detailed Description
Package
28-SOIC (0.295', 7.50mm Width)
Data sheet
Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
In stock: 3300

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Quantity

Specifications

AT28HC256-90SU Tech Specifications
Microchip Technology - AT28HC256-90SU technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - AT28HC256-90SU

Product Attribute Attribute Value  
Manufacturer Microchip Technology  
Write Cycle Time - Word, Page 10ms  
Voltage - Supply 4.5V ~ 5.5V  
Technology EEPROM  
Supplier Device Package 28-SOIC  
Series -  
Package / Case 28-SOIC (0.295', 7.50mm Width)  
Package Tube  
Operating Temperature -40°C ~ 85°C (TC)  
Product Attribute Attribute Value  
Mounting Type Surface Mount  
Memory Type Non-Volatile  
Memory Size 256Kbit  
Memory Organization 32K x 8  
Memory Interface Parallel  
Memory Format EEPROM  
Base Product Number AT28HC256  
Access Time 90 ns  

Parts Introduction

Manufacturer Part Number

AT28HC256-90SU

Manufacturer

Microchip Technology

Introduction

The AT28HC256-90SU is an EEPROM chip from Microchip Technology, providing non-volatile memory storage.

Product Features and Performance

Non-Volatile EEPROM memory

High-density 256Kbit storage

Organized as 32K x 8

Parallel memory interface

Fast write cycle time of 10ms

Quick access time of 90 ns

Product Advantages

Maintains data integrity without power

Allows for easy and fast data retrieval

Robust write performance improves device reliability

Key Technical Parameters

Memory Type: EEPROM

Memory Size: 256Kbit

Write Cycle Time: 10ms

Access Time: 90 ns

Voltage Supply: 4.5V ~ 5.5V

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Operates reliably across a wide range of temperatures

Built to endure harsh operating conditions

Compatibility

Surface Mount, 28-SOIC package for compatibility with standard PCB designs

Application Areas

Widely used in computing, embedded systems, and automotive applications

Product Lifecycle

Currently active product status

No immediate plans for discontinuation known

Sustained support and availability expected

Several Key Reasons to Choose This Product

High-speed operations with a 90 ns access time

Robust temperature range for diverse environmental conditions

High reliability backed by Microchip's industry reputation

Standard 28-SOIC package ensures ease of integration into existing designs

Suitable for applications requiring frequent data updates due to fast write cycles

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology AT28HC256-90SU

Product Attribute AT28HC256-90SU AT28HC256F-12JI AT28HC256-90DM/883 AT28HC256E-12FM/883
Part Number AT28HC256-90SU AT28HC256F-12JI AT28HC256-90DM/883 AT28HC256E-12FM/883
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Technology EEPROM EEPROM EEPROM EEPROM
Base Product Number AT28HC256 AT28HC256 AT28HC256 AT28HC256
Supplier Device Package 28-SOIC 32-PLCC (13.97x11.43) 28-CerDip 28-FlatPack, Ceramic Bottom-Brazed
Voltage - Supply 4.5V ~ 5.5V 4.5V ~ 5.5V 4.5V ~ 5.5V 4.5V ~ 5.5V
Memory Type Non-Volatile Non-Volatile Non-Volatile Non-Volatile
Write Cycle Time - Word, Page 10ms 3ms 10ms 10ms
Memory Format EEPROM EEPROM EEPROM EEPROM
Memory Size 256Kbit 256Kbit 256Kbit 256Kbit
Package / Case 28-SOIC (0.295', 7.50mm Width) 32-LCC (J-Lead) 28-CDIP (0.600", 15.24mm) 28-CFlatPack
Series - - - -
Access Time 90 ns 120 ns 90 ns 120 ns
Memory Organization 32K x 8 32K x 8 32K x 8 32K x 8
Operating Temperature -40°C ~ 85°C (TC) -40°C ~ 85°C (TC) -55°C ~ 125°C (TC) -55°C ~ 125°C (TC)
Mounting Type Surface Mount Surface Mount Through Hole Surface Mount
Memory Interface Parallel Parallel Parallel Parallel
Package Tube Tube Tube Tube

AT28HC256-90SU Datasheet PDF

Download AT28HC256-90SU pdf datasheets and Microchip Technology documentation for AT28HC256-90SU - Microchip Technology.

PCN Packaging
MBB/Label Chgs 16/Nov/2018.pdf Transfer to Microchip/Label/Pkg 5/Sep/2016.pdf
PCN Design/Specification
Marking Chgs 11/Jul/2017.pdf AT28HC256 06/Jan/2021.pdf
PCN Assembly/Origin
2.73KHz.pdf
HTML Datasheet
Cylindrical Battery Holders.pdf

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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AT28HC256-90SU Image

AT28HC256-90SU

Microchip Technology
32D-AT28HC256-90SU

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