一种高效的源线补偿电路

发布时间：2018-07-06 12:14

本文选题：嵌入式闪存 + 源线补偿电路　；参考：《固体电子学研究与进展》2014年05期

【摘要】：提出了一种适合于嵌入式闪存的高效的源线补偿电路,本电路根据需要进行编程的存储单元的数目,自动调整电荷泵的输出来补偿源线译码路径上的由于编程电流造成的压降,最后实现源线电压不随输入数据的不同而变化,以达到最优的编程效率和最小的编程串扰。为了补偿由于温度变化引起的源线电压变化,文中提出利用亚阈值电流对源线电压进行温度补偿。同时,为了解决工艺偏差造成的源线电压误差,还提出了一种测试电路及其方法。将这个源线补偿电路在0.13μm的FLASH工艺平台上实现。测试结果表明:对于32位的数据输入,从0X00000000变化到0XFFFFFFFF,源线上的电压浮动范围为±50mV,从-40~125°C,源线上的电压浮动范围为±100mV,再通过每个芯片单独微调,所有温度、输入数据情形下,源线上电压浮动范围小于±200mV。
[Abstract]:An efficient source line compensation circuit suitable for embedded flash memory is proposed. The circuit automatically adjusts the output of charge pump according to the number of memory cells programmed to compensate the voltage drop caused by programming current on the source line decoding path. Finally, the source line voltage does not change with the input data, in order to achieve the optimal programming efficiency and minimum programming crosstalk. In order to compensate for the variation of source line voltage caused by temperature change, a subthreshold current is proposed to compensate the source line voltage. At the same time, in order to solve the source line voltage error caused by process deviation, a test circuit and its method are proposed. The source line compensation circuit is implemented on the flash platform of 0.13 渭 m. The test results show that for 32-bit data input, from 0X00000000 to 0XFFFFFFFFFFFFFFFFFFFFFF0XFFFF0XFFFFFFF0XFF00000, the range of voltage fluctuation on the source line is 卤50mV from -40mV to 125o C, and the voltage fluctuation range on the source line is 卤100mV. The voltage fluctuation range on the source line is less than 卤200 MV.
【作者单位】：武警工程大学;
【分类号】：TP333

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