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AT27C256R-45JU The Microchip Technology AT27C256R-45JU is a 256Kbit one-time programmable EPROM with a 45ns access time. It operates from a 4.5V to 5.5V supply and comes in a 32-PLCC package.
Mfr Part #:

AT27C256R-45JU

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The Microchip Technology AT27C256R-45JU is a 256Kbit one-time programmable EPROM with a 45ns access time. It operates from a 4.5V to 5.5V supply and comes in a 32-PLCC package.
✓ Total Stock: 1 pcs
$ Price Range: $1.28

AT27C256R-45JU Available from 1 distributor

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1 pcs
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AT27C256R-45JU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Access Time
Automotive Grade
ESD Protection
Industrial Grade
Lead Spacing
Lead Style
Medical Grade
Memory Format
Memory Interface
Memory Organization
Memory Size
Memory Type
Military Grade
Mounting Type
Operating Temperature
Operating Voltage
SVHC Present
Supplier Device Package
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Tape & Reel
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AT27C256R-45JU Description

Short technical summary and product information.

The Atmel AT27C256R is a 262,144-bit EPROM organized as 32K by 8 bits, designed for low-power, high-performance applications. It offers a fast read access time of 45ns, eliminating the need for wait states in many microprocessor systems.

 

This OTP EPROM operates from a single 5V (±10%) power supply. It features low active power consumption, typically 8mA at 5MHz, and minimal standby power, less than 10µA. The device is built using Atmel's scaled CMOS technology, ensuring high reliability with 2,000V ESD protection and 200mA latchup immunity.

 

Available in JEDEC standard 32-lead PLCC packages, the AT27C256R is suitable for surface mounting. It includes two-line control (CE, OE) for flexibility in bus contention prevention. The rapid programming algorithm allows for efficient programming, typically 100µs per byte, and an integrated product identification code aids in programming equipment setup.

 

This memory solution is ideal for storing firmware reliably, providing system access without the delays associated with mass storage media. It supports industrial and automotive temperature ranges and is available in green (Pb/halide-free) packaging options.

AT27C256R-45JU Quick Information

Product Type: EPROM
Canonical Name: Microchip Technology AT27C256R-45JU 256Kbit EPROM Parallel Interface
Subcategory: OTP EPROM

AT27C256R-45JU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

AT27C256R-45JU Estimated Pricing

Qty Low High
1+ $1.28 $1.28

Estimated market price range - modelled values for guidance only, not live distributor offers.

AT27C256R-45JU Features

  • Fast 45ns read access time.
  • Low power CMOS operation.
  • 256Kbit memory size.
  • 32K x 8 memory organization.
  • 32-PLCC surface mount package.

AT27C256R-45JU Applications

  • Used for firmware storage in embedded systems.
  • Suitable for industrial control applications.
  • Ideal for low-power battery-powered devices.
  • Applicable in automotive electronics.
  • Used in prototyping and low-volume production.

AT27C256R-45JU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range?

4.5V to 5.5V.

What is the package type?

32-PLCC (13.97x11.43mm) or 32-LCC (J-Lead).

What is the operating temperature range?

-40°C to 85°C.

What is the access time?

45 ns.

What is the memory capacity?

256 Kbit organized as 32K x 8.

What type of memory interface does it use?

Parallel.

What is the memory technology?

EPROM (One-Time Programmable).

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