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AT27C256R-70RI PDF预览

AT27C256R-70RI

更新时间: 2024-01-04 14:26:55
品牌 Logo 应用领域
爱特美尔 - ATMEL 存储内存集成电路光电二极管可编程只读存储器OTP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
256K 32K x 8 OTP CMOS EPROM

AT27C256R-70RI 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:TSOP1
包装说明:TSOP1, TSSOP28,.53,22针数:28
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.32.00.71风险等级:5.57
最长访问时间:70 nsI/O 类型:COMMON
JESD-30 代码:R-PDSO-G28JESD-609代码:e3
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
湿度敏感等级:3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
封装等效代码:TSSOP28,.53,22封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE并行/串行:PARALLEL
峰值回流温度(摄氏度):260电源:5 V
编程电压:13 V认证状态:Not Qualified
座面最大高度:1.2 mm最大待机电流:0.0001 A
子类别:OTP ROMs最大压摆率:0.02 mA
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
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.55 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:8 mm
Base Number Matches:1

AT27C256R-70RI 数据手册

 浏览型号AT27C256R-70RI的Datasheet PDF文件第1页浏览型号AT27C256R-70RI的Datasheet PDF文件第3页浏览型号AT27C256R-70RI的Datasheet PDF文件第4页浏览型号AT27C256R-70RI的Datasheet PDF文件第5页浏览型号AT27C256R-70RI的Datasheet PDF文件第6页浏览型号AT27C256R-70RI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  

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