发明申请
US20050265105A1 Semiconductor device with self refresh test mode 审中-公开
具有自刷新测试模式的半导体器件

  • 专利标题: Semiconductor device with self refresh test mode
  • 专利标题(中): 具有自刷新测试模式的半导体器件
  • 申请号: US11196971
    申请日: 2005-08-04
  • 公开(公告)号: US20050265105A1
    公开(公告)日: 2005-12-01
  • 发明人: Terry Lee
  • 申请人: Terry Lee
  • 主分类号: G11C7/00
  • IPC分类号: G11C7/00 G11C11/406 G11C29/02 G11C29/48 G11C29/50
Semiconductor device with self refresh test mode
摘要:
A semiconductor device (such as a DRAM) includes a memory array that has dynamic memory cells. In a self refresh test mode, a self refresh test mode controller monitors and/or controls various blocks and internal signals in the semiconductor device. The self refresh test mode controller may communicate with a remote testing device through various conductors including one or more DQ lines and/or one or more address lines. The self refresh test mode controller provides at least one or more of the following four functions: (1) the ability to control internal signals while in self refresh test mode; (2) the ability to monitor internal signals while in self refresh test mode; (3) the ability to put in a programmable delay, change the delay, or change internal timing while in self refresh test mode (add delay or make delay programmable, adjustable); (4) the ability to have the device do a device read in a self refresh test mode (the DQ pins may be used to read particular data on the row, while the column address is frozen).
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