公开(公告)号：WO2012106332A1

公开(公告)日：2012-08-09

申请号：PCT/US2012/023316

申请日：2012-01-31

Applicant: EVERSPIN TECHNOLOGIES, INC. ,  ALAM, Syed M. ,  ANDRE, Thomas ,  CROFT, Matthew R. ,  SUBRAMANIAN, Chitra ,  LIN, Halbert

Inventor： ALAM, Syed M. ,  ANDRE, Thomas ,  CROFT, Matthew R. ,  SUBRAMANIAN, Chitra ,  LIN, Halbert

IPC: G11C11/00

CPC classification number: G11C11/1675 ,  G06F11/1048 ,  G06F11/1076 ,  G11C11/00 ,  G11C11/16 ,  G11C11/1673 ,  G11C11/1693 ,  G11C2013/0076 ,  G11C2029/0411

Abstract: A method includes destructively reading bits of a spin torque magnetic random access memory and immediately writing back the original or inverted values. A detection of the majority state of the write back bits and a conditional inversion of write back bits are employed to reduce the number of write back pulses. A subsequent write command received within a specified time or before an original write operation is commenced will cause a portion of the write back pulses or the original write operation pulses to abort. Write pulses during subsequent write operations will follow the conditional inversion determined for the write back bits during destructive read.

Abstract translation: 一种方法包括破坏性地读取自旋扭矩磁随机存取存储器的位并立即写回原始值或反相值。 采用回写位的多数状态的检测和回写位的条件反转来减少回写脉冲的数量。 在指定时间内或在原始写入操作开始之前接收到的后续写入命令将导致回写脉冲的一部分或原始写入操作脉冲中止。 在后续写入操作期间的写入脉冲将遵循在破坏性读取期间为回写位确定的条件反演。

公开(公告)号：WO2012106358A1

公开(公告)日：2012-08-09

申请号：PCT/US2012/023364

申请日：2012-01-31

Applicant: EVERSPIN TECHNOLOGIES, INC. ,  ALAM, Syed M. ,  ANDRE, Thomas ,  CROFT, Matthew R.

Inventor： ALAM, Syed M. ,  ANDRE, Thomas ,  CROFT, Matthew R.

IPC: G06F11/00

CPC classification number: G06F11/1076 ,  G06F11/1012 ,  G06F11/1048 ,  G11C11/1673 ,  G11C11/1675 ,  H03M13/2906

Abstract: A method includes destructively reading bits of a spin torque magnetic random access memory, using error correcting code (ECC) for error correction, and storing inverted or non-inverted data in data-store latches. When a subsequent write operation changes the state of data-store latches, parity calculation and majority detection of the bits are initiated. A majority bit detection and potential inversion of write data minimizes the number of write current pulses. A subsequent write operation received within a specified time or before an original write operation is commenced will cause the majority detection operation to abort.

Abstract translation: 一种方法包括使用用于纠错的纠错码（ECC）和将反相或非反相数据存储在数据存储锁存器中来自动读取自旋扭矩磁随机存取存储器的位。 当随后的写入操作改变数据存储锁存器的状态时，启动奇偶校验计算和多数位的检测。 写入数据的多数位检测和潜在反转使写入电流脉冲的数量最小化。 在指定时间内或原始写入操作开始之前接收到的后续写入操作将导致多数检测操作中止。