AT27C256R-70PU
This product is a One-Time Programmable (OTP) memory module with a capacity of 32Kx8 and is commonly used for storing data in electronic devicesAT27C256R-70PU
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
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Quality Assurance
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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.
Shipping & Payment
Shipping & Payment
About Shipping
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Service & Packaging
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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About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
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AT27C256R-70PU DataSheet
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Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
AT27C256R-70PU by Microchip is a top-notch One Time Programmable EPROM that offers exceptional performance and exceptional power efficiency. Its 256-Kbit capacity, organized as 32-Kbit x 8, provides ample storage for various applications. Operating on a single 5V power supply, it boasts a low power consumption of 8 mA in active mode and less than 10 μA in standby mode. This makes it an energy-efficient choice for users looking to minimize power usage. With a fast access time of less than 45 ns, it eliminates the need for speed-reducing WAIT states on high-performance microprocessor systems, ensuring seamless operation
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Key Features
- The product features a high-speed programming algorithm
- It operates within a supply voltage range of 4.5V-5.5V
- The IC offers efficient use and fast access time of 70ns
- AT27C256R-70PU is implemented in a 28-pin DIP package
- The EPROM IC has a storage capacity of 256K (32K x 8)
- The product is suitable for one-time programmable applications
- The product features a high-speed programming algorithm
- It operates within a supply voltage range of 4.5V-5.5V
- The IC offers efficient use and fast access time of 70ns
Application
- AT27C256R-70PU: Essential for microcontrollers
- Highly reliable memory for embedded systems
- AT27C256R-70PU: Ideal for firmware storage
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.
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.
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