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基于ARM和nRF905的无线数据收发系统 被引量:6
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作者 段智文 陈惠 《现代电子技术》 2010年第15期82-84,共3页
为无线随动控制系统的数据传输所设计的无线数据收发系统,采用ARM LPC2148和nRF905构成,工作在433MHz的ISM频段,最远传输距离可达1000m,数据速率为50Kb/s,工作电压为3.3V,在发射功率为-10dBm时,电流消耗为11mA,低功耗模式时电流消耗仅... 为无线随动控制系统的数据传输所设计的无线数据收发系统,采用ARM LPC2148和nRF905构成,工作在433MHz的ISM频段,最远传输距离可达1000m,数据速率为50Kb/s,工作电压为3.3V,在发射功率为-10dBm时,电流消耗为11mA,低功耗模式时电流消耗仅为42μA。系统采用DSS+PLL频率合成技术和GMSK调制,信道数最多可达170个,能够满足需要多信道工作的特殊场合使用。 展开更多
关键词 无线数据收发 ARM微控制器 GMSK调制 低功耗模式
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Design of 512-bit logic process-based single poly EEPROM IP
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作者 金丽妍 JANG Ji-Hye +2 位作者 余忆宁 HA Pan-Bong KIM Young-Hee 《Journal of Central South University》 SCIE EI CAS 2011年第6期2036-2044,共9页
A single poly EEPROM cell circuit sharing the deep N-well of a cell array was designed using the logic process. The proposed cell is written by the FN tunneling scheme and the cell size is 41.26 μm2, about 37% smalle... A single poly EEPROM cell circuit sharing the deep N-well of a cell array was designed using the logic process. The proposed cell is written by the FN tunneling scheme and the cell size is 41.26 μm2, about 37% smaller than the conventional cell. Also, a small-area and low-power 512-bit EEPROM IP was designed using the proposed cells which was used for a 900 MHz passive UHF RFID tag chip. To secure the operation of the cell proposed with 3.3 V devices and the reliability of the used devices, an EEPROM core circuit and a DC-DC converter were proposed. Simulation results for the designed EEPROM IP based on the 0.18μm logic process show that the power consumptions in read mode, program mode and erase mode are 11.82, 25.15, and 24.08 ~tW, respectively, and the EEPROM size is 0.12 mm2. 展开更多
关键词 single poly EEPROM cell Fowler-Nordheim tunneling logic process radio frequency identification small area
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