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AT27C256R-45PC The Microchip Technology AT27C256R-45PC is a 256Kbit One-Time Programmable (OTP) EPROM memory IC. It offers a fast 45ns access time and operates from a 4.5V to 5.5V supply.
Mfr Part #:

AT27C256R-45PC

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The Microchip Technology AT27C256R-45PC is a 256Kbit One-Time Programmable (OTP) EPROM memory IC. It offers a fast 45ns access time and operates from a 4.5V to 5.5V supply.
✓ Total Stock: 3,200 pcs
$ Price Range: $1.28

AT27C256R-45PC Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
3,200 pcs
On Request
3200 pcs On Request 1 On Request On Request On Request On Request On Request
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AT27C256R-45PC 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
Medical Grade
Memory Format
Memory Interface
Memory Organization
Memory Size
Memory Type
Military Grade
Mounting Type
Operating Temperature
SVHC Present
Supplier Device Package
Tape & Reel
Technology
Voltage
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AT27C256R-45PC Description

Short technical summary and product information.

The AT27C256R-45PC from Microchip Technology is a high-performance, low-power 262,144-bit One-Time Programmable (OTP) Read-Only Memory (ROM) organized as 32K by 8 bits. It features a fast read access time of 45 ns, suitable for high-performance microprocessor systems.

 

This EPROM operates on a single 5V power supply (4.5V to 5.5V range) and utilizes CMOS technology for low power consumption, with a maximum standby current of 100 µA and a maximum active current of 20 mA at 5 MHz. It includes features like 2,000V ESD protection and 200 mA latchup immunity.

 

The device supports a Rapid™ Programming Algorithm, typically programming in 100 µs/byte. It is available in a 28-lead PDIP package and is designed for through-hole mounting. The operating temperature range is 0°C to 70°C (TC).

 

Key specifications include a memory size of 256Kbit, parallel memory interface, and EPROM memory format. It is suitable for applications requiring reliable firmware storage and quick access.

AT27C256R-45PC Quick Information

Product Type: EPROM OTP Memory
Canonical Name: AT27C256R-45PC 256Kbit Parallel EPROM OTP Memory
Subcategory: OTP Memory

AT27C256R-45PC Compliance

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

AT27C256R-45PC Estimated Pricing

Qty Low High
1+ $1.28 $1.28

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

AT27C256R-45PC Features

  • Fast 45ns read access time.
  • Low-power CMOS operation.
  • 256Kbit memory size, 32K x 8 organization.
  • Operates from a 4.5V to 5.5V supply.
  • Available in a 28-PDIP through-hole package.

AT27C256R-45PC Applications

  • Firmware storage for microprocessor systems.
  • Boot code memory in embedded controllers.
  • Lookup table storage for signal processing.
  • Configuration data retention in industrial equipment.
  • One-time programmable code for automotive modules.

AT27C256R-45PC FAQs

7 frequently asked questions generated from this part’s specifications.
What is the access time for the AT27C256R-45PC?

The maximum access time for the AT27C256R-45PC is 45 ns.

What is the memory size and organization of the AT27C256R-45PC?

The AT27C256R-45PC has a memory size of 256 Kbit and is organized as 32K x 8 bits.

What is the operating voltage range for this EPROM?

The AT27C256R-45PC operates within a voltage range of 4.5V to 5.5V.

What is the operating temperature range for the AT27C256R-45PC?

The operating temperature range for the AT27C256R-45PC is 0°C to 70°C (TC).

What type of package is the AT27C256R-45PC supplied in?

The AT27C256R-45PC is supplied in a 28-PDIP package.

What is the standby power consumption of the AT27C256R-45PC?

The maximum standby power consumption is 100 µA.

What is the active power consumption of the AT27C256R-45PC?

The maximum active power consumption at 5 MHz is 20 mA.

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