发明公开
EP3038109A1 PSEUDO DUAL PORT MEMORY USING A DUAL PORT CELL AND A SINGLE PORT CELL WITH ASSOCIATED VALID DATA BITS AND RELATED METHODS
有权
具有双重PORT-CELL伪双端口存储器,并与相关有效数据位和相关程序的单一端口-CELL
- 专利标题: PSEUDO DUAL PORT MEMORY USING A DUAL PORT CELL AND A SINGLE PORT CELL WITH ASSOCIATED VALID DATA BITS AND RELATED METHODS
- 专利标题(中): 具有双重PORT-CELL伪双端口存储器,并与相关有效数据位和相关程序的单一端口-CELL
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申请号: EP15187696.8申请日: 2015-09-30
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公开(公告)号: EP3038109A1公开(公告)日: 2016-06-29
- 发明人: Rawat, Harsh , JAIN, PIYUSH
- 申请人: STMicroelectronics International N.V.
- 申请人地址: WTC Schiphol Airport Schiphol Boulevard 265 1118 BH Amsterdam NL
- 专利权人: STMicroelectronics International N.V.
- 当前专利权人: STMicroelectronics International N.V.
- 当前专利权人地址: WTC Schiphol Airport Schiphol Boulevard 265 1118 BH Amsterdam NL
- 代理机构: Smith, Gary John
- 优先权: US201414573106 20141217
- 主分类号: G11C8/16
- IPC分类号: G11C8/16 ; G11C7/10 ; G11C11/419 ; G11C11/418
摘要:
A pseudo dual port memory includes a set of dual port memory cells having a read port and a write port, and configured to store data words in each of a plurality of addressed locations, and a set of single port memory cells having a read/write port, and configured to store data words in each of a plurality of addressed locations. A valid data storage unit is configured to store valid bits corresponding to the addressed locations of the set of dual port memory cells and the set of single port memory cells. Control circuitry is configured to access the addressed locations of the set of dual port memory cells and the set of single port memory cells. The control circuitry performs a simultaneous write operation using the write port of the set of dual port memory cells and the read/write port of the set of single port memory cells, and updates corresponding valid bits in the valid data storage unit, and performs a parallel read operation, at a same addressed location of the set of dual port memory cells and the set of single port memory cells, using the read port of the set of dual port memory cells and the read/write port of the set of single port memory cells, and determining which stored data word is valid based upon the corresponding valid bits in the valid data storage unit.
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