AT28C256-15PU

Name: AT28C256-15PU
Rating: 4.5 (10 reviews)

This IC is an EEPROM memory chip with a storage capacity of 256 kilobits

7,154 Effective Inventory

AT28C256-15PU

Effective Inventory7,154

This IC is an EEPROM memory chip with a storage capacity of 256 kilobits

Manufacturer Part # : AT28C256-15PU
Package/Case: PDIP-28
Brand: Microchip
Product Categories : Memory

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Initiate the application within 90 days from the shipment date.

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AT28C256-15PU DataSheet

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Details

The AT28C256-15PU, developed by Microchip, is a high-performance 256Kbit Parallel EEPROM suitable for both Industrial and Military temp ranges. It offers access times to 150ns and a power dissipation of 440mW, with a CMOS standby current of less than 200μA when deselected. The device can be accessed like static RAM for the read or write cycle without requiring external components and includes a 64-byte page register to facilitate writing of up to 64bytes simultaneously. In its Military version, it features an internal Error Correction Circuit for extended endurance and improved data retention, as well as an optional Software Data Protection mechanism guarding against inadvertent writes. Additionally, an extra 64 bytes of EEPROM enable device identification or tracking. For those interested in the MIL product, the AT28C256 is available DUAL MARKED with the appropriate Standard Military Drawing Number - 5962-88525xxxx, where applicable. For exact MIL product availability, please refer to the datasheet

Key Features

This is feature one

Application

Trusted in various electronic devices
Essential for data storage
Reliable nonvolatile memory

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category !	EEPROM	RoHS	Details
Mounting Style	Through Hole	Package / Case	PDIP-28
Interface Type	Parallel	Memory Size !	256 kbit
Organization	32 k x 8	Supply Voltage - Min	4.5 V
Supply Voltage - Max	5.5 V	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature !	+ 85 C	Maximum Clock Frequency	5 MHz
Access Time	150 ns	Data Retention	10 Year
Supply Current - Max	50 mA	Series	AT28C256
Active Read Current - Max	50 mA	Brand	Microchip Technology
Height	4.83 mm/0.38 mm (Max)/(Min)	Length	37.34 mm (Max)
Moisture Sensitive	Yes	Operating Supply Current	50 mA
Operating Supply Voltage !	5 V	Output Enable Access Time	70 ns
Product Type !	EEPROM	Programming Voltage !	4.5 V to 5.5 V
Factory Pack Quantity	14	Subcategory	Memory & Data Storage
Width	13.97 mm (Max)	Unit Weight	0.147798 oz

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification AT28C256-15PU PDF Download

FAQs

What is AT28C256-15PU?

The AT28C256-15PU is a 256-kilobit (32K x 8) electrically erasable programmable read-only memory (EEPROM) chip manufactured by Atmel Corporation. It offers non-volatile storage capability for data that needs to be retained even when power is removed. The '15PU' in the part number signifies a speed rating of 150ns access time.

How Does AT28C256-15PU Work?

The AT28C256-15PU operates by storing and retrieving data electronically within its memory cells. Data can be both written to and read from the chip. The EEPROM technology allows for data to be erased and reprogrammed multiple times, providing flexibility in data storage applications.

How Many Pins does AT28C256-15PU have and What are the Functions of the Pinout Configuration?

The AT28C256-15PU is housed in a 28-pin DIP (Dual Inline Package) package. The pinout configuration includes:

A0-A14: Address input pins for memory addressing.
DQ0-DQ7: Data input/output pins for 8-bit data transfer.
CE: Chip Enable pin for activating the chip.
OE: Output Enable pin for controlling data output.
WE: Write Enable pin for initiating write operations.
VCC: Power supply pin.
GND: Ground pin.

What are the Pros and Cons of AT28C256-15PU?

Pros:

Non-Volatile Storage: Retains data even without power, ideal for applications requiring persistent memory.
Electrically Erasable: Allows for easy reprogramming of data without the need for UV light exposure.
High Capacity: Offers 256-kilobit storage capacity for various data storage needs.
Reliable: Provides stable and reliable data retention over multiple read and write cycles.
Wide Voltage Range: Supports operation with a range of supply voltages for flexibility in system design.

Cons:

Speed: The 150ns access time may be slower compared to newer EEPROM technologies.
Complex Interface: Requires careful handling of address and control signals for proper operation.
Limited Endurance: EEPROM technology may have a limited number of erase/write cycles compared to other memory types.

Are There Any Equivalents/Alternatives to AT28C256-15PU for Recommendation?

The SST28SF040A from Microchip Technology is a similar EEPROM with a different capacity and features.
Alternatives to the AT28C256-15PU include the M27C256B from STMicroelectronics and the 28C256 from Microchip Technology.

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AT28C256-15PU

AT28C256-15PU

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