AT27C256R-70PU

Name: AT27C256R-70PU
Brand: Microchip Technology
Rating: 4.5 (10 reviews)
Author: Lisleapex

This product is a One-Time Programmable (OTP) memory module with a capacity of 32Kx8 and is commonly used for storing data in electronic devices

3,413 Effective Inventory

AT27C256R-70PU

Effective Inventory3,413

This product is a One-Time Programmable (OTP) memory module with a capacity of 32Kx8 and is commonly used for storing data in electronic devices

Manufacturer Part # : AT27C256R-70PU
Package/Case: PDIP-28
Brand: Microchip Technology
Product Categories : Memory
Series : AT27C256

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All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.

Certification

We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.

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Service & Packaging

About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

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AT27C256R-70PU DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

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AT27C256R-70PU Details

The AT27C256R-70PU is an EPROM OTP (Electrically Erasable Programmable Read-Only Memory) from Microchip Technology, designed for various industrial and automotive applications. This device offers a high-reliability CMOS technology, low-power consumption, and a wide operating temperature range.

Key Features

256-Kbit EPROM: Offers a 32-Kbit x 8 architecture for efficient memory allocation.
Low-power CMOS Operation: Designed for low power consumption, making it suitable for battery-powered applications or systems with limited power budgets.
Standard Power Supply Range: Compatible with standard operating supplies of 5V +/-10%.
High-reliability CMOS Technology: Ensures consistent and reliable performance in harsh environments.

Applications

Industrial Automation: Suitable for use in industrial automation systems, such as process control units and instrumentation panels.
Automotive Electronics: Offers a reliable storage solution for automotive applications, including electronic control units (ECUs) and infotainment systems.

Where to Use

The AT27C256R-70PU is suitable for use in a variety of industrial and automotive applications where high-reliability memory storage is required. It can be used as a primary or backup storage solution, providing a reliable way to store critical data.

How to Use

To use the AT27C256R-70PU, simply connect the chip-select and write-enable pins to the appropriate system signals. Verify that the power supply is stable and within the specified operating range (5V +/-10%). For detailed usage instructions, refer to the datasheet.

Application Circuit

The application circuit diagram for the AT27C256R-70PU is designed to illustrate a typical system configuration. The diagram shows the chip-select and write-enable pins connected to a suitable system bus, along with power supply connections.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

M29W640DB: A similar EPROM from Microchip Technology with equivalent features and performance.
24LC64B: An alternative non-volatile memory device from Micron with comparable capacity and architecture.

Complementary

The AT27C256R-70PU can be complemented by the 24AA128, which offers additional features such as a high-speed interface and advanced security features. The combined use of these devices would provide a highly reliable storage solution for critical system data.

When selecting complementary memory solutions, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the operating temperature range of the AT27C256R-70PU?

A: The operating temperature range for the AT27C256R-70PU is -40°C to 85°C. For more details, refer to the datasheet for specific operating conditions and limitations.

Specifications

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

Product Category !	EPROM	RoHS	Details
Mounting Style	Through Hole	Package / Case	PDIP-28
Type	OTP	Memory Size !	256 kbit
Organization	32 k x 8	Interface Type	Parallel
Operating Supply Current	100 uA	Programming Voltage !	13 V
Supply Voltage - Max	5.5 V	Supply Voltage - Min	4.5 V
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature !	+ 85 C
Series	AT27C256R	Access Time	70 ns
Brand	Microchip Technology	Moisture Sensitive	Yes
Operating Supply Voltage !	5 V	Output Enable Access Time	30 ns
Product Type !	EPROM	Factory Pack Quantity	14
Subcategory	Memory & Data Storage	Unit Weight	0.143449 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 AT27C256R-70PU PDF Download

FAQs

What is AT27C256R-70PU?

The AT27C256R-70PU is a 256K (32K x 8) OTP EPROM (Electrically Programmable Read-Only Memory) integrated circuit manufactured by Microchip Technology. It is designed for applications that require non-volatile, read-only memory storage with a capacity of 256 kilobits.

How Does AT27C256R-70PU Work?

The AT27C256R-70PU operates as a one-time programmable memory device where the data is written or programmed into the memory cells during manufacturing using special programming equipment. Once programmed, the data becomes non-volatile and can be read multiple times. The device retains the programmed data even when power is removed.

How Many Pins does AT27C256R-70PU have and What are the Functions of the Pinout Configuration?

The AT27C256R-70PU is typically available in a 28-pin DIP (Dual Inline Package) or a 32-lead PLCC (Plastic Leaded Chip Carrier) package. The pinout configuration includes:

A0-A14: Address input pins for selecting memory locations.
DQ0-DQ7: Data input/output pins for reading data from the memory.
CE (Chip Enable), OE (Output Enable), WE (Write Enable): Control pins for enabling memory operations.
VCC: Power supply pin.
GND: Ground connection.

What are the Pros and Cons of AT27C256R-70PU?

Pros:

Non-Volatile Storage: Retains data even when power is removed, ideal for firmware and configuration storage.
Permanent Programming: Once programmed, the data cannot be easily changed, providing security for critical information.
Reliability: OTP EPROMs like the AT27C256R-70PU offer high reliability and endurance.
Wide Operating Voltage Range: Can typically operate at a wide range of voltages, enhancing compatibility.
Cost-Effective: Offers a cost-effective solution for read-only memory applications.

Cons:

Limited Write Capability: Data can only be programmed once, limiting flexibility for updates.
Programmability Constraints: Requires special programming equipment during manufacturing, which may add complexity to the production process.
Physical Size: Depending on the package, the IC may occupy significant board space compared to newer non-volatile memory technologies.

Are There Any Equivalents/Alternatives to AT27C256R-70PU for Recommendation?

The AT28C256 from Microchip Technology is a similar 256K OTP EPROM with comparable features.
Alternatives to the AT27C256R-70PU include the M27C256B from STMicroelectronics and the NM27C256 from Texas Instruments.