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AT27C256R-70JU The Microchip Technology AT27C256R-70JU is a 256Kbit one-time programmable EPROM. It features a fast 70ns access time and operates from a 4.5V to 5.5V supply.
Mfr Part #:

AT27C256R-70JU

Available from 3 distributors
Mfr Name: Microchip Technology
Microchip Technology
The Microchip Technology AT27C256R-70JU is a 256Kbit one-time programmable EPROM. It features a fast 70ns access time and operates from a 4.5V to 5.5V supply.
✓ Total Stock: 2,579 pcs
$ Price Range: $1.28

AT27C256R-70JU Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
1,414 pcs
On Request
1414 pcs On Request 1 On Request On Request On Request On Request On Request
Fe Components ✓
Non-Authorised Inventory information
1,115 pcs
On Request
1115 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
50 pcs
On Request
50 pcs On Request 1 On Request On Request 1748+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

AT27C256R-70JU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Access Time
ESD Protection
Memory Format
Memory Interface
Memory Organization
Memory Size
Memory Type
Mounting Type
Operating Temperature
Operating Voltage
Package / Case
Supplier Device Package
Technology
Voltage
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AT27C256R-70JU Description

Short technical summary and product information.

The Atmel AT27C256R is a low-power, high-performance, 262,144-bit, one-time programmable, read-only memory (OTP EPROM) organized as 32K by 8 bits. It requires a single 5V power supply for normal read mode operation, with any byte accessible in less than 45ns. This eliminates the need for speed-reducing WAIT states on high-performance microprocessor systems.

 

This device utilizes Atmel's scaled CMOS technology for low active power consumption and fast programming. Power consumption is typically 8mA in active mode and less than 10µA in standby mode. The AT27C256R is available in industry-standard JEDEC-approved OTP PDIP and PLCC packages. It features two-line control (CE, OE) for flexibility in preventing bus contention.

 

With 32K byte storage capability, the AT27C256R allows firmware to be stored reliably and accessed without the delays of mass storage media. The rapid programming algorithm reduces programming time to typically 100µs/byte, ensuring reliable programming. An integrated product identification code electronically identifies the device and manufacturer, used by programming equipment to select proper algorithms and voltages.

 

The AT27C256R is offered in a 32-lead PLCC package and supports surface mount installation. It operates within a temperature range of -40°C to 85°C.

AT27C256R-70JU Quick Information

Product Type: EPROM
Canonical Name: AT27C256R-70JU 256Kbit Parallel EPROM
Subcategory: OTP EPROM

AT27C256R-70JU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Green (Pb/halide-free) packaging option

AT27C256R-70JU Estimated Pricing

Qty Low High
1+ $1.28 $1.28

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

AT27C256R-70JU Features

  • 256Kbit parallel EPROM memory
  • Fast 70ns access time
  • Low-power CMOS operation
  • Operates from a 4.5V to 5.5V supply
  • 32-lead PLCC surface mount package

AT27C256R-70JU Applications

  • Suitable for firmware storage
  • Used in high-performance systems
  • Reliable data access applications
  • Industrial and automotive temperature ranges

AT27C256R-70JU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage of the AT27C256R-70JU?

5V ±10%.

What package is the AT27C256R-70JU available in?

32-PLCC (13.97x11.43mm) surface mount package.

What is the operating temperature range?

-40°C to 85°C (industrial and automotive).

What is the memory size of the AT27C256R-70JU?

256 Kbit (32K x 8).

What is the access time of the AT27C256R-70JU?

70 ns (45 ns fast read available).

What is the programming time for the AT27C256R-70JU?

100 µs per byte typical.

What is the ESD protection level?

2,000V.

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