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公开(公告)号:US20100208506A1
公开(公告)日:2010-08-19
申请号:US12687847
申请日:2010-01-14
申请人: Manmohan RANA , Bikas Maiti , Ashish Sharma
发明人: Manmohan RANA , Bikas Maiti , Ashish Sharma
摘要: A Read Only Memory (ROM) device includes a ROM array, a row address decoder, a column address decoder, a column multiplexer, and a control circuit. Data is stored in bit cells in the ROM array. The control circuit generates control signals for reading the ROM. The row address decoder selects a word line. The column address decoder enables a bit line. The data is sensed from a bit cell corresponding to the selected word line and the enabled bit line by a corresponding sense amplifier and delivered on a data output pin of the ROM. The control signals for enabling the bit line and the sense amplifier operate at a higher voltage than supply voltage of the ROM. This reduces the ROM read time.
摘要翻译: 只读存储器(ROM)装置包括ROM阵列,行地址解码器,列地址解码器,列复用器和控制电路。 数据存储在ROM阵列中的位单元格中。 控制电路产生用于读取ROM的控制信号。 行地址解码器选择字线。 列地址解码器启用位线。 通过对应的读出放大器从对应于所选字线和使能位线的位单元中感测数据,并传送到ROM的数据输出引脚。 用于使位线和读出放大器的控制信号的工作电压高于ROM的电源电压。 这减少了ROM读取时间。