公开(公告)号：US06507527B1

公开(公告)日：2003-01-14

申请号：US09698614

申请日：2000-10-27

申请人： Lee Cleveland ,  Jin-Lien Lin ,  Takao Akaogi ,  Ali Al-Shamma ,  Boon Tang Teh ,  Kendra Nguyen ,  Yong Kim

发明人： Lee Cleveland ,  Jin-Lien Lin ,  Takao Akaogi ,  Ali Al-Shamma ,  Boon Tang Teh ,  Kendra Nguyen ,  Yong Kim

IPC分类号： G11C700

CPC分类号： G11C7/06 ,  G11C7/12

摘要： A method of charging a data line to a desired voltage level prior to the data line being sensed in a low power memory device by discharging the data line from a voltage level above the desired voltage level to approximately the desired voltage level. By using N-type transistors to discharge the data line to the desired voltage level, the voltage level can be reached faster with cheaper components.

摘要翻译： 一种通过将数据线从高于期望电压电平的电压电平放电到大约期望的电压电平，在数据线在低功率存储器件中被感测之前将数据线充电到期望的电压电平的方法。 通过使用N型晶体管将数据线放电至期望的电压电平，可以用更便宜的组件更快地达到电压电平。

公开(公告)号：US06347052B1

公开(公告)日：2002-02-12

申请号：US09690554

申请日：2000-10-17

申请人： Takao Akaogi ,  Ali K. Al-Shamma ,  Lee Cleveland ,  Yong Kim ,  Jin-Lien Lin ,  Kendra Nguyen ,  Boon Tang Teh

发明人： Takao Akaogi ,  Ali K. Al-Shamma ,  Lee Cleveland ,  Yong Kim ,  Jin-Lien Lin ,  Kendra Nguyen ,  Boon Tang Teh

IPC分类号： G11C1606

CPC分类号： G11C16/08 ,  G11C8/10

摘要： A flash memory having word line decoding and selection architecture is described. The flash memory include first and second sectors of memory cells, first and second local driver circuits, first, second and third decoding circuits, and a driving circuit. The first sectors of first memory cells include a first plurality of word lines coupled to the first memory cells, each being capable of being a first selected word line. The second sectors of second memory cells include a similar Local driver circuits are independently coupled to each word line of the first and second pluralities of word lines of the first sectors. Each decoding circuits comprise a first and a second side of decoding circuitry. The first side of decoding circuitry activates a first selected plurality of local driver circuits and the second side of decoding circuitry activates a second selected plurality of local driver circuits. The second decoding circuits are coupled to the first local driver circuits and supply a first boosted voltage to the first selected word line coupled to a first local driver circuit. The third decoding circuits are coupled to the second local driver circuits and supply a second boosted voltage to the second selected word line. The driving circuit supplies a series of boosted voltages to the first decoding circuits, the second decoding circuits, the third decoding circuits, the first local driver circuits, and the second local driver circuits.

摘要翻译： 描述了具有字线解码和选择架构的闪速存储器。 闪速存储器包括存储单元的第一和第二扇区，第一和第二本地驱动电路，第一，第二和第三解码电路以及驱动电路。 第一存储器单元的第一扇区包括耦合到第一存储器单元的第一多个字线，每个字线能够是第一选定的字线。 第二存储器单元的第二扇区包括类似的局部驱动器电路独立地耦合到第一扇区的第一和第二多个字线的每个字线。 每个解码电路包括解码电路的第一和第二侧。 解码电路的第一侧激活第一选定的多个本地驱动器电路，并且解码电路的第二侧激活第二选定的多个局部驱动器电路。 第二解码电路耦合到第一本地驱动电路，并将第一升压电压提供给耦合到第一本地驱动电路的第一选定字线。 第三解码电路耦合到第二本地驱动电路，并将第二升压电压提供给第二选定字线。 驱动电路向第一解码电路，第二解码电路，第三解码电路，第一本地驱动电路和第二本地驱动电路提供一系列升压电压。

公开(公告)号：US06229735B1

公开(公告)日：2001-05-08

申请号：US09638055

申请日：2000-08-11

申请人： Takao Akaogi ,  Kendra Nguyen ,  Yong Kim ,  Lee Cleveland

发明人： Takao Akaogi ,  Kendra Nguyen ,  Yong Kim ,  Lee Cleveland

IPC分类号： G11C1606

CPC分类号： G11C8/18 ,  G11C8/08

摘要： A burst read mode operation is provided that boosts the voltage of a word line while the bit lines of the row are selected for reading. When the column group address bits read the last column group of cells in the row, a pulse signal is generated which temporarily reduces the boosted voltage to allow the X-decoder to select the next word line. An alternative delay element is also provided which generates an ATD pulse with a longer duration when the column group address bits are at the end of a row and a shorter duration pulse at other times.

摘要翻译： 提供突发读取模式操作，其提高字线的电压，同时选择行的位线用于读取。 当列组地址位读取行中的最后一列单元格时，产生脉冲信号，临时降低升压电压，以允许X解码器选择下一个字线。 还提供了另一种延迟元件，当列组地址位在行的末尾，而在其他时间具有较短的持续时间脉冲时，其产生具有较长持续时间的ATD脉冲。

公开(公告)号：US06621761B2

公开(公告)日：2003-09-16

申请号：US09829518

申请日：2001-04-09

申请人： Takao Akaogi ,  Lee Cleveland ,  Kendra Nguyen

发明人： Takao Akaogi ,  Lee Cleveland ,  Kendra Nguyen

IPC分类号： G06C800

CPC分类号： G11C7/1018 ,  G11C7/1072

摘要： A burst mode architecture to provide burst mode access to a plurality of data words in a flash memory is described. The burst mode architecture includes a first circuit, a control circuit coupled to the first circuit, and a data buffer selectively coupled to the first circuit by the control circuit. The first circuit accesses a plurality of data words, beginning with an initial access of a first data word and a second data word. The control circuit generates a timing signal having pulses and a second signal. The second signal is generated upon completion of the initial access of the first data word and the second data word. The first circuit follows the initial access with subsequent accesses of the plurality of data words responsively to the second signal and the timing signal. The data buffer has an output and produces the first data word at the output and successively produces, with each successive pulse of the timing signal following an initial period of time, the second data word, and subsequent data words at the output. The subsequent data words correspond to the subsequent accesses of the plurality of data words.

公开(公告)号：US06351420B1

公开(公告)日：2002-02-26

申请号：US09595519

申请日：2000-06-16

申请人： Takao Akaogi ,  Ali K. Al-Shamma ,  Lee Edward Cleveland ,  Yong Kim ,  Jin-Lien Lin ,  Boon Tang Teh ,  Kendra Nguyen

发明人： Takao Akaogi ,  Ali K. Al-Shamma ,  Lee Edward Cleveland ,  Yong Kim ,  Jin-Lien Lin ,  Boon Tang Teh ,  Kendra Nguyen

IPC分类号： G11C700

CPC分类号： G11C8/08 ,  G11C5/145 ,  G11C16/12 ,  G11C16/30

摘要： A voltage boost circuit (111) for a flash memory (100) includes a boosting circuit (110), which is capable of boosting a portion of a power supply voltage (VCC) of the flash memory to a word line voltage level adequate for accessing a core cell in a core cell array (102) of the memory. The voltage boost circuit further includes a balancing or clamping circuit (112) for providing a nonzero adjustment voltage (VCL) to the boosting circuit to reduce the portion of the supply voltage that is available for boosting by the boosting circuit when the power supply voltage exceeds a certain value.

摘要翻译： 用于闪存（100）的升压电路（111）包括升压电路（110），其能够将闪存的电源电压（VCC）的一部分升压到足以访问的字线电压电平 存储器的核心单元阵列（102）中的核心单元。 升压电路还包括用于向升压电路提供非零调节电压（VCL）的平衡或钳位电路（112），以在电源电压超过时减小升压电路可用于升压的电源电压部分 一定的价值。

公开(公告)号：US06243316B1

公开(公告)日：2001-06-05

申请号：US09501159

申请日：2000-02-09

申请人： Takao Akaogi ,  Ali K. Al-Shamma ,  Lee Edward Cleveland ,  Yong Kim ,  Jin-Lien Lin ,  Boon Tang Teh ,  Kendra Nguyen

发明人： Takao Akaogi ,  Ali K. Al-Shamma ,  Lee Edward Cleveland ,  Yong Kim ,  Jin-Lien Lin ,  Boon Tang Teh ,  Kendra Nguyen

IPC分类号： G11C700

CPC分类号： G11C8/08 ,  G11C5/145 ,  G11C16/08

摘要： A voltage boost circuit (111) for a memory (100) includes a boosting circuit (110) which is coupled to a boosted node (120) to boost a word line voltage for accessing a core cell of the memory. The voltage boost circuit further includes a reset circuit (112) coupled to the boosted node and including a switchable zero-threshold transistor (202) for resetting the boosted node to a reset voltage (VCC).

摘要翻译： 用于存储器（100）的升压电路（111）包括升压电路（110），其被耦合到升压节点（120）以升高用于访问存储器的核心单元的字线电压。 升压电路还包括耦合到升压节点的复位电路（112），并且包括用于将升压节点复位到复位电压（VCC）的可切换零阈值晶体管（202）。

公开(公告)号：US06240040B1

公开(公告)日：2001-05-29

申请号：US09526239

申请日：2000-03-15

申请人： Takao Akaogi ,  Lee Edward Cleveland ,  Kendra Nguyen

发明人： Takao Akaogi ,  Lee Edward Cleveland ,  Kendra Nguyen

IPC分类号： G11C800

CPC分类号： G11C16/26 ,  G11C16/08 ,  G11C16/10 ,  G11C2216/22

摘要： An address buffering and decoding architecture for a multiple bank (or N bank) simultaneous operation flash memory is described. For the duration of a read operation at one bank of the N banks, a write operation can only be performed on any one of the other N-1 banks. For the duration of a write operation at one bank of the N banks, a read operation can only be performed on any one of the other N-1 banks. The address buffering and decoding architecture includes a control logic circuit, an address selection circuit located at each of the N banks, and address buffer circuitry. The control logic circuit is used to generate N read select signals to select one bank of the N banks for a read operation and N write select signals to select another bank of the N banks for a write operation. Each address selection circuit is configured to receive from the control logic circuit a respective one of the N read select signals and a respective one of the N write select signals. The address buffer circuitry is used to simultaneously provide a write address and a read address in order to access core memory cells. Respective first portions of the write and read addresses are provided to the control logic circuit to generate the respective N read select signals and N write select signals. Respective second portions of the write and read addresses are provided to the respective address selection circuit.

摘要翻译： 描述了用于多组（或N组）同时操作闪速存储器的地址缓冲和解码架构。 对于在N个存储体的一个存储体中的读取操作的持续时间，只能对其他N-1个存储体中的任一个进行写入操作。 对于在N个存储体的一个存储体中的写入操作的持续时间，只能对其他N-1个存储体中的任一个进行读取操作。 地址缓冲和解码架构包括控制逻辑电路，位于N个存储体中的每一个的地址选择电路和地址缓冲器电路。 控制逻辑电路用于产生N个读取选择信号以选择用于读取操作的N个存储体中的一个存储单元和N个写入选择信号，以便为写入操作选择N个存储体的另一个存储体。 每个地址选择电路被配置为从控制逻辑电路接收N个读选择信号中的相应一个和N个写入选择信号中的相应一个。 地址缓冲器电路用于同时提供写入地址和读取地址以便访问核心存储器单元。 将写入和读取地址的各个第一部分提供给控制逻辑电路以产生相应的N个读取选择信号和N个写入选择信号。 将写入和读取地址的相应第二部分提供给相应的地址选择电路。

公开(公告)号：US06377488B1

公开(公告)日：2002-04-23

申请号：US09645623

申请日：2000-08-24

申请人： Yong Kim ,  Kendra Nguyen

发明人： Yong Kim ,  Kendra Nguyen

IPC分类号： G11C1606

CPC分类号： G11C16/3472 ,  G11C16/16 ,  G11C16/344 ,  G11C16/3468

摘要： A non-volatile semiconductor memory device comprising a memory array, the memory array divided into a plurality of sectors, each sector comprising a plurality of memory cells, which can be electrically erased, and an erase-verify circuit, capable of simultaneously erasing multiple memory sectors. The erase-verify circuit simultaneously erases a plurality memory sectors, and verifies that the memory cells in a selected memory sector of the plurality of memory sectors is erased. When it determines that the selected memory sector is not erased, it again erases the plurality of memory sectors and again verifies whether the selected memory sector is erased. The erasing of the plurality of memory sectors is repeated until it is verified that the memory cells in the selected memory sector is erased.

摘要翻译： 一种非易失性半导体存储器件，包括存储器阵列，被划分成多个扇区的存储器阵列，每个扇区包括可被电擦除的多个存储单元，以及擦除验证电路，能够同时擦除多个存储器 部门。 擦除验证电路同时擦除多个存储器扇区，并且验证多个存储器扇区中所选择的存储器扇区中的存储单元被擦除。 当确定所选择的存储器扇区未被擦除时，它再次擦除多个存储器扇区，并且再次验证所选择的存储器扇区是否被擦除。 重复擦除多个存储器扇区，直到验证所选存储器扇区中的存储单元被擦除为止。

公开(公告)号：US06957297B1

公开(公告)日：2005-10-18

申请号：US10603136

申请日：2003-06-23

申请人： Lee E. Cleveland ,  Kendra Nguyen

发明人： Lee E. Cleveland ,  Kendra Nguyen

IPC分类号： G11C16/10 ,  G11C16/26 ,  G06F12/02

CPC分类号： G11C16/26 ,  G11C16/10 ,  G11C2216/22

摘要： A method for operating a flash memory includes, in response to a received operation command, initiating an embedded operation of the flash memory and subsequently, during execution of the embedded operation, in response to a received read command, initiating a burst read operation of the flash memory.

摘要翻译： 一种用于操作闪速存储器的方法包括：响应于所接收的操作命令，启动闪速存储器的嵌入式操作，随后在执行嵌入式操作期间，响应于接收到的读取命令，启动闪存读取操作 闪存

公开(公告)号：US07284167B2

公开(公告)日：2007-10-16

申请号：US11041608

申请日：2005-01-24

申请人： Mimi Lee ,  Darlene Hamilton ,  Ken Cheong Cheah ,  Kendra Nguyen ,  Xin Guo

发明人： Mimi Lee ,  Darlene Hamilton ,  Ken Cheong Cheah ,  Kendra Nguyen ,  Xin Guo

IPC分类号： G11C29/00 ,  G11C7/00

CPC分类号： G11C29/021 ,  G11C16/04 ,  G11C29/02 ,  G11C29/028 ,  G11C29/1201 ,  G11C29/16

摘要： A method is discussed for providing programmable test conditions for a built-in self test circuit of a flash memory device. The method comprises providing a BIST interface adapted to adjust a test condition used in a BIST circuit, providing the memory cells of the Flash memory device, and providing the BIST circuit adapted to test the flash memory. The method further comprises communicating with the BIST interface one or more global variables associated with the test condition, adjusting the test condition used by the BIST circuit based on the values represented by the global variables, performing one or more test operations on the flash memory in accordance with the adjusted test condition, and reporting the results of the memory test operations. The method of the present invention may further include a serial communications medium and the use of a serial test protocol for communicating the global variables to the BIST interface and test results from the interface. The global variables may also be provided by a memory device user.

摘要翻译： 讨论了一种用于为闪存设备的内置自测电路提供可编程测试条件的方法。 该方法包括提供BIST接口，其适于调整在BIST电路中使用的测试条件，提供闪存设备的存储单元，以及提供适于测试闪速存储器的BIST电路。 该方法还包括与BIST接口通信与测试条件相关联的一个或多个全局变量，基于由全局变量表示的值来调整由BIST电路使用的测试条件，对闪速存储器执行一个或多个测试操作 根据调整的测试条件，并记录测试操作的结果。 本发明的方法还可以包括串行通信介质和使用串行测试协议来将全局变量传送到BIST接口并从接口测试结果。 全局变量也可由存储器设备用户提供。