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AT28HC256F-90SI PDF预览

AT28HC256F-90SI

更新时间: 2024-11-05 06:38:19
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电可擦编程只读存储器
页数 文件大小 规格书
25页 610K
描述
256 (32K x 8) High-speed Parallel EEPROM

AT28HC256F-90SI 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP, SOP28,.4针数:28
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.32.00.51风险等级:5.6
最长访问时间:90 ns命令用户界面:NO
数据轮询:YES耐久性:10000 Write/Erase Cycles
JESD-30 代码:R-PDSO-G28JESD-609代码:e0
长度:17.9 mm内存密度:262144 bit
内存集成电路类型:EEPROM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
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP28,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE页面大小:64 words
并行/串行:PARALLEL峰值回流温度(摄氏度):240
电源:5 V编程电压:5 V
认证状态:Not Qualified座面最大高度:2.65 mm
最大待机电流:0.0003 A子类别:EEPROMs
最大压摆率:0.08 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:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
切换位:YES宽度:7.5 mm
最长写入周期时间 (tWC):3 msBase Number Matches:1

AT28HC256F-90SI 数据手册

 浏览型号AT28HC256F-90SI的Datasheet PDF文件第2页浏览型号AT28HC256F-90SI的Datasheet PDF文件第3页浏览型号AT28HC256F-90SI的Datasheet PDF文件第4页浏览型号AT28HC256F-90SI的Datasheet PDF文件第5页浏览型号AT28HC256F-90SI的Datasheet PDF文件第6页浏览型号AT28HC256F-90SI的Datasheet PDF文件第7页 
Features  
Fast Read Access Time – 70 ns  
Automatic Page Write Operation  
– Internal Address and Data Latches for 64 Bytes  
– Internal Control Timer  
Fast Write Cycle Times  
– Page Write Cycle Time: 3 ms or 10 ms Maximum  
– 1 to 64-byte Page Write Operation  
Low Power Dissipation  
256 (32K x 8)  
High-speed  
Parallel  
– 80 mA Active Current  
– 3 mA Standby Current  
Hardware and Software Data Protection  
DATA Polling for End of Write Detection  
High Reliability CMOS Technology  
– Endurance: 104 or 105 Cycles  
– Data Retention: 10 Years  
EEPROM  
Single 5V 10% Supply  
CMOS and TTL Compatible Inputs and Outputs  
JEDEC Approved Byte-wide Pinout  
Full Military and Industrial Temperature Ranges  
Green (Pb/Halide-free) Packaging Option  
AT28HC256  
1. Description  
The AT28HC256 is a high-performance electrically erasable and programmable read-  
only memory. Its 256K of memory is organized as 32,768 words by 8 bits. Manufac-  
tured with Atmel’s advanced nonvolatile CMOS technology, the AT28HC256 offers  
access times to 70 ns with power dissipation of just 440 mW. When the AT28HC256  
is deselected, the standby current is less than 5 mA.  
The AT28HC256 is accessed like a Static RAM for the read or write cycle without the  
need for external components. The device contains a 64-byte page register to allow  
writing of up to 64 bytes simultaneously. During a write cycle, the address and 1 to 64  
bytes of data are internally latched, freeing the addresses and data bus for other oper-  
ations. Following the initiation of a write cycle, the device will automatically write the  
latched data using an internal control timer. The end of a write cycle can be detected  
by DATA Polling of I/O7. Once the end of a write cycle has been detected a new  
access for a read or write can begin.  
Atmel’s 28HC256 has additional features to ensure high quality and manufacturability.  
The device utilizes internal error correction for extended endurance and improved  
data retention characteristics. An optional software data protection mechanism is  
available to guard against inadvertent writes. The device also includes an extra  
64 bytes of EEPROM for device identification or tracking.  
0007L–PEEPR–03/08  

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