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AT27C256R-55KI PDF预览

AT27C256R-55KI

更新时间： 2024-01-17 13:57:23
品牌 Logo 应用领域
爱特美尔 - ATMEL 可编程只读存储器电动程控只读存储器
页数 文件大小 规格书
9页 254K
描述
UVPROM, 32KX8, 55ns, CMOS, CQCC32, WINDOWED, CERAMIC, JLCC-32

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AT27C256R-55KI 技术参数

生命周期：Obsolete零件包装代码：TSOP
包装说明：TSOP1,针数：28
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.32.00.71风险等级：5.6
最长访问时间：55 nsJESD-30 代码：R-PDSO-G28
长度：11.8 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：28
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
输出特性：3-STATE封装主体材料：PLASTIC/EPOXY
封装代码：TSOP1封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE并行/串行：PARALLEL
认证状态：Not Qualified座面最大高度：1.2 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：GULL WING端子节距：0.55 mm
端子位置：DUAL宽度：8 mm
Base Number Matches：1

AT27C256R-55KI 数据手册

 浏览型号AT27C256R-55KI的Datasheet PDF文件第1页浏览型号AT27C256R-55KI的Datasheet PDF文件第3页浏览型号AT27C256R-55KI的Datasheet PDF文件第4页浏览型号AT27C256R-55KI的Datasheet PDF文件第5页浏览型号AT27C256R-55KI的Datasheet PDF文件第6页浏览型号AT27C256R-55KI的Datasheet PDF文件第7页 
System Considerations  
Description (Continued)  
The AT27C256R is available in a choice of industry stand-  
ard JEDEC-approved one time programmable (OTP)  
plastic DIP, PLCC, SOIC, and TSOP packages. All de-  
vices feature two-line control (CE, OE) to give designers  
the flexibility to prevent bus contention.  
Switching between active and standby conditions via the  
Chip Enable pin may produce transient voltage excur-  
sions. Unless accommodated by the system design, these  
transients may exceed data sheet limits, resulting in de-  
vice non-conformance. At a minimum, a 0.1 µF high fre-  
quency, low inherent inductance, ceramic capacitor  
should be utilized for each device. This capacitor should  
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.  
be connected between the V and Ground terminals of  
CC  
the device, as close to the device as possible. Additionally,  
to stabilize the supply voltage level on printed circuit  
boards with large EPROM arrays, a 4.7 µF bulk electrolytic  
capacitor should be utilized, again connected between the  
Atmel’s 27C256R has additional features to ensure high  
quality and efficient production use. The Rapid Program-  
ming Algorithm reduces the time required to program the  
part and guarantees reliable programming. Programming  
time is typically only 100 µs/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 program-  
ming algorithms and voltages.  
V
and Ground terminals. This capacitor should be posi-  
CC  
tioned as close as possible to the point where the power  
supply is connected to the array.  
3-126  
AT27C256R  
1234567...9

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