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EDS5104ABTA-7A 参数 Datasheet PDF下载

EDS5104ABTA-7A图片预览
型号: EDS5104ABTA-7A
PDF下载: 下载PDF文件 查看货源
内容描述: 512M位的SDRAM [512M bits SDRAM]
分类和应用: 动态存储器
文件页数/大小: 52 页 / 558 K
品牌: ELPIDA [ ELPIDA MEMORY ]
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EDS5104ABTA, EDS5108ABTA, EDS5116ABTA  
NOTES FOR CMOS DEVICES  
1
PRECAUTION AGAINST ESD FOR MOS DEVICES  
Exposing the MOS devices to a strong electric field can cause destruction of the gate  
oxide and ultimately degrade the MOS devices operation. Steps must be taken to stop  
generation of static electricity as much as possible, and quickly dissipate it, when once  
it has occurred. Environmental control must be adequate. When it is dry, humidifier  
should be used. It is recommended to avoid using insulators that easily build static  
electricity. MOS devices must be stored and transported in an anti-static container,  
static shielding bag or conductive material. All test and measurement tools including  
work bench and floor should be grounded. The operator should be grounded using  
wrist strap. MOS devices must not be touched with bare hands. Similar precautions  
need to be taken for PW boards with semiconductor MOS devices on it.  
2
HANDLING OF UNUSED INPUT PINS FOR CMOS DEVICES  
No connection for CMOS devices input pins can be a cause of malfunction. If no  
connection is provided to the input pins, it is possible that an internal input level may be  
generated due to noise, etc., hence causing malfunction. CMOS devices behave  
differently than Bipolar or NMOS devices. Input levels of CMOS devices must be fixed  
high or low by using a pull-up or pull-down circuitry. Each unused pin should be connected  
to VDD or GND with a resistor, if it is considered to have a possibility of being an output  
pin. The unused pins must be handled in accordance with the related specifications.  
3
STATUS BEFORE INITIALIZATION OF MOS DEVICES  
Power-on does not necessarily define initial status of MOS devices. Production process  
of MOS does not define the initial operation status of the device. Immediately after the  
power source is turned ON, the MOS devices with reset function have not yet been  
initialized. Hence, power-on does not guarantee output pin levels, I/O settings or  
contents of registers. MOS devices are not initialized until the reset signal is received.  
Reset operation must be executed immediately after power-on for MOS devices having  
reset function.  
CME0107  
Preliminary Data Sheet E0250E10 (Ver. 1.0)  
51  
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