共查询到19条相似文献,搜索用时 93 毫秒
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SCP1000是芬兰VTI公司生产的一款高精度,高分辨率、低功耗气压传感器.该器件内带AD转换器、ASIC结构以及EEPROM存储单元,并可通过SPI接口与外部进行通讯.因而可以广泛用于便携式高度计、气压计等方面.文中介绍了SCP1000的性能特点、引脚功能,内部结构、工作原理和典型应用. 相似文献
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单总线数字温度传感器的自动识别技术 总被引:10,自引:0,他引:10
本文讨论了单总线数字温度传感器的自动识别问题。通过编程自动建立位置编号和传感器序列号的关系表,并将其存入可电改写的EEPROM芯片,实现了在多点温度测量系统中对多个传感器的出错指示、自动识别。 相似文献
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设计了一种实时检测司机酒精含量的报警系统,通过压力传感器检测是否有人驾驶,以MQ-3酒精传感器检测酒精含量,采用GPS作为定位模块,卫星接收车辆实时位置并存入EEPROM中,单片机读取信息并通过LCD1602显示经纬度,时间日期和酒精含量,通过ISD1420实现语音报警。系统在酒精量超标的情况下制动机车,同时通过GPS定位把车辆的精确位置通过GSM网络以短信的形式实现远程报警。经测试表明,系统稳定可靠,功能齐全,具有较好的推广价值。 相似文献
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文章以单片机STC12C5A16AD为核心,运用高灵敏度传感器MQ-3气体传感器,采用EEPROM芯片存储预设的报警阈值,并通过LCD显示检测结果及二极管实现起标报警。经过软硬件联合调试,实验结果基本满足设计要求,达到设计指标。 相似文献
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This contribution describes a fully integrated field segment photo sensor for use in single lens reflex cameras. It supplies measurement data from five segments and the integral value via a standard interface to the camera processor. Individual calibration data of each sensor is stored in an on-chip EEPROM. The IC has been manufactured in a standard CMOS technology. The sensor operates over more than six decades of illumination to below 1 mlux. It represents an example of complex smart sensor integration 相似文献
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Aslam-Siddiqi A. Brockherde W. Schanz M. Hosticka B.J. 《Solid-State Circuits, IEEE Journal of》1998,33(10):1497-1501
A 128-pixel complementary metal-oxide-semiconductor (CMOS) image sensor array with analog nonvolatile storage for each pixel has been realized in a 1.5-μm single-poly standard CMOS/EEPROM technology and successfully tested. The integrated nonvolatile memory allows an offset correction for each sensor element, cancellation of the fixed pattern noise, and compensation of the background illumination. The sensor array can also learn a presented pattern and store it in its analog nonvolatile memory just by “seeing”. The stored pattern can be read out directly or, in combination with the optical input, it can be used for pattern recognition or motion detection. The required programming circuitry for the analog memory has been integrated on the same chip 相似文献
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Device simulation is used to investigate three-dimensional effects in small electrically erasable programmable read-only memory (EEPROM) cells. Threshold voltage, tunnel currents, write speed, and the effects of misregistration are characterized for a structurally parameterized generic FLOTOX EEPROM cell. The results indicate considerable sensitivity to three-dimensional effects. Design insights for small EEPROM cells are discussed 相似文献
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设计了一种基于嵌入式EEPROM工艺的双电源数字电位计。通过两线的I2C总线来控制电路内部EEPROM单元,调节数字电位计的输出电阻或电压。电路采用正负电源供电,同时集成了两路256个抽头可变电位计输出。由于内部集成了EEPROM单元,当电路突然掉电后依然保存抽头设置信息,重新上电后,自动恢复到掉电前电阻抽头的设定位置。该电路采用SMIC 0.18μm EEPROM工艺设计,版图面积为6.76 mm2,采用Hsim对整个电路进行仿真。仿真和测试结果表明,该电位计电路的整体非线性小于±1 LSB,级间非线性小于±0.5 LSB,输出电阻温度系数小于±100×10-6/℃,EEPROM上电恢复时间小于5 ms,可广泛应用于控制系统、参数调整和信号处理领域。 相似文献
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A novel flash EEPROM cell based on trench technology forintegration within power integrated circuits
Garner D.M. Chen Y. Sabesan L. Amaratunga G.A.J. Blackburn A. Clark J. Sekiariapuram S.S. Evans A.G.R. 《Electron Device Letters, IEEE》2000,21(5):236-238
A flash EEPROM suitable for integration within power integrated circuits (PIC's) is presented. The EEPROM cell uses a trench floating gate to give a large gate charge while using no more silicon area than a conventional flash EEPROM cell. The cell shows good immunity against the induced disturbance voltages which are present in a PIC, and the storage lifetime is greater than ten years at a reading voltage of VD=2.2 V 相似文献