发明授权
- 专利标题: Method and apparatus for writing to memory cells
- 专利标题(中): 用于写入存储单元的方法和装置
-
申请号: US09750254申请日: 2000-12-28
-
公开(公告)号: US06353558B1公开(公告)日: 2002-03-05
- 发明人: George M. Lattimore , Jose Angel Paredes
- 申请人: George M. Lattimore , Jose Angel Paredes
- 主分类号: G11C700
- IPC分类号: G11C700
摘要:
An apparatus embodiment of the present invention includes a memory array with lines of memory cells. The lines are coupled to respective wordlines. The lines may be selected by a wordline signal that is asserted responsive to a first clock signal being asserted. The apparatus also includes “write wordline” generators coupled to respective ones of the wordlines. A write wordline generator will assert a write wordline signal responsive to a second clock signal being asserted and before the next time the first clock signal is asserted, but after the first clock signal is deasserted. The apparatus further includes a comparator, which has a first set of inputs coupled to bit lines of the memory cells for reading the contents of the cells, and a second set of inputs for reading a data value. The comparator has a compare match output upon which it asserts a compare match signal if the contents matches the data value. In response to the compare match and write wordline signals, a write operation occurs for the line. Due to the timing of the write wordline signal, the write operation advantageously occurs in the same clock cycle during which the line was selected without any additional decoding.
信息查询