发明名称 |
Semiconductor memory device |
摘要 |
A semiconductor memory device having: a RAM port for randomly accessing a memory cell array having memory cells disposed in matrix; a SAM port for serially accessing data of one row of the memory cell array; a mode switching unit for switching the operation mode of the SAM port between an ordinary data output mode and a test mode, upon externally receiving a mode switching signal; and an address pointer outputting unit for outputting an address pointer of the SAM port when the operation mode is switched to the test mode by the mode switching unit. |
申请公布号 |
US5239509(A) |
申请公布日期 |
1993.08.24 |
申请号 |
US19920824356 |
申请日期 |
1992.01.23 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
IKAWA, TATSUO;OHSHIMA, SHIGEO |
分类号 |
B23F5/02;B23F23/00;B23F23/12;G11C7/10;G11C11/401;G11C11/41;G11C29/00;G11C29/02;G11C29/04;G11C29/14;G11C29/20;G11C29/56 |
主分类号 |
B23F5/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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