Datasheet > AT27C256R-70JU-306

AT27C256R-70JU-306

更新时间： 2024-01-02 03:37:52

品牌	Logo	应用领域
美国微芯 - MICROCHIP		OTP只读存储器内存集成电路
页数	文件大小	规格书
13页	822K
描述
IC OTP 256KBIT 70NS 32PLCC

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技术参数
数据手册

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AT27C256R-70JU-306 技术参数

生命周期：	Active	包装说明：	QCCJ,
Reach Compliance Code：	compliant	风险等级：	2.17
最长访问时间：	70 ns	JESD-30 代码：	R-PQCC-J32
长度：	13.97 mm	内存密度：	262144 bit
内存集成电路类型：	OTP ROM	内存宽度：	8
功能数量：	1	端子数量：	32
字数：	32768 words	字数代码：	32000
工作模式：	ASYNCHRONOUS	最高工作温度：	85 °C
最低工作温度：	-40 °C	组织：	32KX8
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCJ
封装形状：	RECTANGULAR	封装形式：	CHIP CARRIER
并行/串行：	PARALLEL	座面最大高度：	3.556 mm
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	4.5 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子形式：	J BEND	端子节距：	1.27 mm
端子位置：	QUAD	宽度：	11.43 mm
Base Number Matches：	1

AT27C256R-70JU-306 数据手册

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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

256K (32K x 8)

One-time

– 200mA latchup immunity

Programmable,

Read-only Memory

• 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

Atmel AT27C256R

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

12 3 4 5 6 7...13

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与AT27C256R-70JU-306相关器件

型号	品牌	描述	获取价格	数据表
AT27C256R-70KC	ATMEL	UVPROM, 32KX8, 70ns, CMOS, CQCC32, WINDOWED, CERAMIC, JLCC-32	获取价格
AT27C256R-70KI	ATMEL	UVPROM, 32KX8, 70ns, CMOS, CQCC32, WINDOWED, CERAMIC, JLCC-32	获取价格
AT27C256R-70KM	ATMEL	UVPROM, 32KX8, 70ns, CMOS, CQCC32, WINDOWED, CERAMIC, JLCC-32	获取价格
AT27C256R-70KM/883	ATMEL	UVPROM, 32KX8, 70ns, CMOS, CQCC32, WINDOWED, CERAMIC, JLCC-32	获取价格
AT27C256R-70LC	ATMEL	UVPROM, 32KX8, 70ns, CMOS, CQCC32, WINDOWED, CERAMIC, LCC-32	获取价格
AT27C256R-70LI	ETC	x8 EPROM	获取价格

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