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公开(公告)号:US08681562B2
公开(公告)日:2014-03-25
申请号:US13051599
申请日:2011-03-18
申请人: Pranav Kalavade , Akira Goda , Tommaso Vali , Violante Moschiano
发明人: Pranav Kalavade , Akira Goda , Tommaso Vali , Violante Moschiano
IPC分类号: G11C11/34
CPC分类号: G11C16/10 , G11C11/5628 , G11C16/3454 , G11C16/3459
摘要: Apparatus and methods for adjusting programming for upper pages of memories are disclosed. In at least one embodiment, a threshold voltage distribution upper limit is determined after a single programming pulse for lower page programming, and upper page programming start voltages are adjusted based on the determined upper limit of the threshold voltage distribution.
摘要翻译: 公开了用于调整存储器上部页面编程的装置和方法。 在至少一个实施例中,在用于较低页编程的单个编程脉冲之后确定阈值电压分布上限,并且基于所确定的阈值电压分布的上限来调整上页编程开始电压。
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公开(公告)号:US20130058164A1
公开(公告)日:2013-03-07
申请号:US13563314
申请日:2012-07-31
申请人: Violante Moschiano , Tommaso Vali , Giovanni Naso , Vishal Sarin , William Henry Radke , Theodore T. Pekny
发明人: Violante Moschiano , Tommaso Vali , Giovanni Naso , Vishal Sarin , William Henry Radke , Theodore T. Pekny
CPC分类号: G11C11/5621 , G11C11/5628 , G11C11/5642 , G11C16/0483 , G11C16/24 , G11C16/26 , G11C16/3418 , G11C16/3427 , G11C2211/5641
摘要: Threshold voltages in a charge storage memory are controlled by threshold voltage placement, such as to provide more reliable operation and to reduce the influence of factors such as neighboring charge storage elements and parasitic coupling. Pre-compensation or post-compensation of threshold voltage for neighboring programmed aggressor memory cells reduces the threshold voltage uncertainty in a flash memory system. Using a buffer having a data structure such as a lookup table provides for programmable threshold voltage distributions that enables the distribution of data states in a multi-level cell flash memory to be tailored, such as to provide more reliable operation. Additional apparatus, systems, and methods are provided.
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公开(公告)号:US10102903B1
公开(公告)日:2018-10-16
申请号:US15476654
申请日:2017-03-31
摘要: An apparatus is described. The apparatus includes a non volatile memory device that includes a controller to implement a coarse write process for the non volatile memory device. The non volatile memory device includes storage cells to store more than two logic states, wherein, the coarse write process is to perform a verify operation early in the coarse write process to identify less responsive storage cells and provide additional charge to the less responsive storage cells as compared to non less responsive storage cells that are to be programmed to a same logical state as the less responsive storage cells without performing a following verify operation after each pulse of charge applied during the coarse write process.
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公开(公告)号:US08737139B2
公开(公告)日:2014-05-27
申请号:US13444443
申请日:2012-04-11
申请人: Violante Moschiano , Tommaso Vali , Mark A. Hawes
发明人: Violante Moschiano , Tommaso Vali , Mark A. Hawes
IPC分类号: G11C11/34
CPC分类号: G11C11/5628 , G11C16/0483 , G11C16/10 , G11C16/26
摘要: The present disclosure includes apparatuses and methods for determining soft data for combinations of memory cells. A number of embodiments include an array of memory cells including a first and a second memory cell each programmable to one of a number of program states, wherein a combination of the program states of the first and second memory cells corresponds to one of a number of data states, and a buffer and/or a controller coupled to the array and configured to determine soft data associated with the program states of the first and second memory cells and soft data associated with the data state that corresponds to the combination of the program states of the first and second memory cells based, at least in part, on the soft data associated with the program states of the first and second memory cells.
摘要翻译: 本公开包括用于确定存储器单元的组合的软数据的装置和方法。 多个实施例包括存储单元的阵列,其包括第一和第二存储单元,每个第一和第二存储器单元可编程为多个程序状态之一,其中第一和第二存储器单元的编程状态的组合对应于多个 数据状态,以及耦合到阵列并被配置为确定与第一和第二存储器单元的程序状态相关联的软数据的缓冲器和/或控制器以及与对应于程序状态的组合的数据状态相关联的软数据 至少部分地基于与第一和第二存储器单元的程序状态相关联的软数据。
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公开(公告)号:US20130051141A1
公开(公告)日:2013-02-28
申请号:US13219439
申请日:2011-08-26
申请人: Violante Moschiano , Tommaso Vali , Giovanni Naso , Vishal Sarin , William Henry Radke , Theodore T. Pekny
发明人: Violante Moschiano , Tommaso Vali , Giovanni Naso , Vishal Sarin , William Henry Radke , Theodore T. Pekny
IPC分类号: G11C16/04
CPC分类号: G11C11/5621 , G11C11/5628 , G11C11/5642 , G11C16/0483 , G11C16/24 , G11C16/26 , G11C16/3418 , G11C16/3427 , G11C2211/5641
摘要: Threshold voltages in a charge storage memory are controlled by threshold voltage placement, such as to provide more reliable operation and to reduce the influence of factors such as neighboring charge storage elements and parasitic coupling. Pre-compensation or post-compensation of threshold voltage for neighboring programmed “aggressor” memory cells reduces the threshold voltage uncertainty in a flash memory system. Using a buffer having a data structure such as a lookup table provides for programmable threshold voltage distributions that enables the distribution of data states in a multi-level cell flash memory to be tailored, such as to provide more reliable operation.
摘要翻译: 电荷存储存储器中的阈值电压由阈值电压放置来控制,例如提供更可靠的操作并减少诸如相邻电荷存储元件和寄生耦合的因素的影响。 对于相邻编程的侵略存储器单元的阈值电压的预补偿或后补偿降低了闪存系统中的阈值电压不确定性。 使用具有诸如查找表之类的数据结构的缓冲器提供了可编程的阈值电压分布,使得能够定制多级单元闪存中的数据状态的分布,例如提供更可靠的操作。
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公开(公告)号:US20120176843A1
公开(公告)日:2012-07-12
申请号:US13051599
申请日:2011-03-18
申请人: Pranav Kalavade , Akira Goda , Tommaso Vali , Violante Moschiano
发明人: Pranav Kalavade , Akira Goda , Tommaso Vali , Violante Moschiano
CPC分类号: G11C16/10 , G11C11/5628 , G11C16/3454 , G11C16/3459
摘要: Apparatus and methods for adjusting programming for upper pages of memories are disclosed. In at least one embodiment, a threshold voltage distribution upper limit is determined after a single programming pulse for lower page programming, and upper page programming start voltages are adjusted based on the determined upper limit of the threshold voltage distribution.
摘要翻译: 公开了用于调整存储器上部页面编程的装置和方法。 在至少一个实施例中,在用于较低页编程的单个编程脉冲之后确定阈值电压分布上限,并且基于所确定的阈值电压分布的上限来调整上页编程开始电压。
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公开(公告)号:US07394699B2
公开(公告)日:2008-07-01
申请号:US11651687
申请日:2007-01-10
申请人: Tommaso Vali , Giovanni Santin , Michele Incarnati
发明人: Tommaso Vali , Giovanni Santin , Michele Incarnati
IPC分类号: G11C16/06
CPC分类号: G11C16/26
摘要: The memory device has a plurality of memory cells each coupled to a bitline. A feedback transistor is coupled to the bitline and provides voltage feedback on the bitline's precharge status. A biasing transistor is coupled to the feedback transistor. The biasing transistor provides a bias voltage to the feedback transistor in response to a reference voltage on the biasing transistor. A cascode-connected transistor is coupled to the feedback transistor and the biasing transistor. This transistor provides a stable bias voltage to the biasing transistor. An output latch circuit is coupled to the bitline for providing a latched output of the memory cell's data.
摘要翻译: 存储器件具有多个存储单元,每个存储器单元都耦合到位线。 反馈晶体管耦合到位线,并对位线的预充电状态提供电压反馈。 偏置晶体管耦合到反馈晶体管。 偏置晶体管响应于偏置晶体管上的参考电压向反馈晶体管提供偏置电压。 共源共栅连接的晶体管耦合到反馈晶体管和偏置晶体管。 该晶体管向偏置晶体管提供稳定的偏置电压。 输出锁存电路耦合到位线以提供存储器单元数据的锁存输出。
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公开(公告)号:US20070115742A1
公开(公告)日:2007-05-24
申请号:US11651687
申请日:2007-01-10
申请人: Tommaso Vali , Giovanni Santin , Michele Incarnati
发明人: Tommaso Vali , Giovanni Santin , Michele Incarnati
IPC分类号: G11C7/00
CPC分类号: G11C16/26
摘要: The memory device has a plurality of memory cells each coupled to a bitline. A feedback transistor is coupled to the bitline and provides voltage feedback on the bitline's precharge status. A biasing transistor is coupled to the feedback transistor. The biasing transistor provides a bias voltage to the feedback transistor in response to a reference voltage on the biasing transistor. A cascode-connected transistor is coupled to the feedback transistor and the biasing transistor. This transistor provides a stable bias voltage to the biasing transistor. An output latch circuit is coupled to the bitline for providing a latched output of the memory cell's data.
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公开(公告)号:US07173856B2
公开(公告)日:2007-02-06
申请号:US10912520
申请日:2004-08-05
申请人: Tommaso Vali , Giovanni Santin , Michele Incarnati
发明人: Tommaso Vali , Giovanni Santin , Michele Incarnati
摘要: The memory device has a plurality of memory cells each coupled to a bitline. A feedback transistor is coupled to the bitline and provides voltage feedback on the bitline's precharge status. A biasing transistor is coupled to the feedback transistor. The biasing transistor provides a bias voltage to the feedback transistor in response to a reference voltage on the biasing transistor. A cascode-connected transistor is coupled to the feedback transistor and the biasing transistor. This transistor provides a stable bias voltage to the biasing transistor. An output latch circuit is coupled to the bitline for providing a latched output of the memory cell's data.
摘要翻译: 存储器件具有多个存储单元,每个存储器单元都耦合到位线。 反馈晶体管耦合到位线,并对位线的预充电状态提供电压反馈。 偏置晶体管耦合到反馈晶体管。 偏置晶体管响应于偏置晶体管上的参考电压向反馈晶体管提供偏置电压。 共源共栅连接的晶体管耦合到反馈晶体管和偏置晶体管。 该晶体管向偏置晶体管提供稳定的偏置电压。 输出锁存电路耦合到位线以提供存储器单元数据的锁存输出。
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公开(公告)号:US20060285392A1
公开(公告)日:2006-12-21
申请号:US11414982
申请日:2006-05-01
申请人: Michele Incarnati , Giovanni Santin , Tommaso Vali
发明人: Michele Incarnati , Giovanni Santin , Tommaso Vali
IPC分类号: G11C11/34
CPC分类号: G11C16/3404
摘要: A plurality of memory cells are programmed with incrementally increased programming pulses applied to word lines to which the memory cells are coupled. After each pulse, a verify operation determines the threshold voltage for each cell. When the threshold voltage reaches a pre-verify threshold, only the bit line connected to that particular cell is biased with an intermediate voltage that slows down the change in the Vt of the cell. The other cells continue to be programmed at their normal pace. As the Vt for each cell reaches the pre-verify level, it is biased with the intermediate voltage. All of the bit lines are biased with an inhibit voltage as their threshold voltages reach the verify voltage threshold.
摘要翻译: 多个存储器单元被编程,其中增加的编程脉冲被施加到存储器单元耦合到的字线。 在每个脉冲之后,验证操作确定每个单元的阈值电压。 当阈值电压达到预验证阈值时,只有连接到该特定单元的位线被中间电压偏置,该中间电压降低了单元的Vcc变化。 其他细胞继续按其正常速度进行编程。 由于每个单元的V OUT达到预验证电平,所以它被中间电压偏置。 当它们的阈值电压达到验证电压阈值时,所有位线都被抑制电压偏置。
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