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AT27C256R-70RU

Description
EPROM 256Kb (32Kx8) OTP 5V 70ns
Categorystorage   
File Size817KB,13 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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AT27C256R-70RU Overview

EPROM 256Kb (32Kx8) OTP 5V 70ns

AT27C256R-70RU Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerMicrochip
Product CategoryEPROM
RoHSDetails
Mounting StyleSMD/SMT
Package / CaseSOIC-28
TypeOTP
Memory Size256 kb
Organization32 k x 8
Interface TypeParallel
Operating Supply Current20 mA
Programming Voltage13 V
Supply Voltage - Min4.5 V
Minimum Operating Temperature0 C
Maximum Operating Temperature+ 85 C
Access Time45 ns
Moisture SensitiveYes
Operating Supply Voltage5 V
Output Enable Access Time30 ns
Factory Pack Quantity26
Unit Weight0.078125 oz
Features
Fast read access time – 45ns
Low-power CMOS operation
– 100µA max standby
– 20mA max active at 5MHz
JEDEC standard packages
– 28-lead PDIP
– 32-lead PLCC
5V±10% supply
High reliability CMOS technology
– 2,000V ESD protection
– 200mA latchup immunity
Rapid programming algorithm – 100µs/byte (typical)
CMOS- and TTL-compatible inputs and outputs
Integrated product identification code
Industrial and automotive temperature ranges
Green (Pb/halide-free) packaging option
256K (32K x 8)
One-time
Programmable,
Read-only Memory
Atmel AT27C256R
1.
Description
The Atmel
®
AT27C256R is a low-power, high-performance, 262,144-bit, one-time pro-
grammable, read-only memory (OTP EPROM) organized as 32K by 8 bits. It requires only
one 5V power supply in normal read mode operation. Any byte can be accessed in less than
45ns, eliminating the need for speed reducing WAIT states on high-performance micropro-
cessor systems.
The Atmel scaled CMOS technology provides low active power consumption and fast pro-
gramming. Power consumption is typically only 8mA in active mode and less than 10µA in
standby mode.
The AT27C256R is available in a choice of industry-standard, JEDEC-approved, one-time
programmable (OTP) PDIP and PLCC packages. All devices feature two-line control (CE,
OE) to give designers the flexibility to prevent bus contention.
With 32K byte storage capability, the AT27C256R allows firmware to be stored reliably and
to be accessed by the system without the delays of mass storage media.
The AT27C256R has additional features to ensure high quality and efficient production use.
The rapid programming algorithm reduces the time required to program the part and guar-
antees reliable programming. Programming time is typically only 100µs/byte. The
integrated product identification code electronically identifies the device and manufacturer.
This feature is used by industry-standard programming equipment to select the proper pro-
gramming algorithms and voltages.
0014O–EPROM–10/11
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