发明名称 |
DUAL POWER SUPPLY MEMORY ARRAY HAVING A CONTROL CIRCUIT THAT DYANMICALLY SELECTS A LOWER OF TWO SUPPLY VOLTAGES FOR BITLINE PRE-CHARGE OPERATIONS AND AN ASSOCIATED METHOD |
摘要 |
Disclosed is a memory array in which the lower of two supply voltages from two power supplies is dynamically selected for bitline pre-charge operations. In the memory array, a voltage comparator compares the first supply voltage on a first power supply rail to a second supply voltage on a second power supply rail and outputs a voltage difference signal. If the voltage difference signal has a first value indicating that the first supply voltage is equal to or less than the second supply voltage, than a control circuit ensures that the complementary bitlines connected to a memory cell are pre-charged to the first supply voltage. If the voltage difference signal has a second value indicating that the first supply voltage is greater than the second supply voltage, then the control circuit ensures that the complementary bitlines are pre-charged to the second supply voltage. Also disclosed is an associated method.
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申请公布号 |
US2013135944(A1) |
申请公布日期 |
2013.05.30 |
申请号 |
US201113307245 |
申请日期 |
2011.11.30 |
申请人 |
BRACERAS GEORGE M.;PETERSON KIRK D.;PILO HAROLD;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BRACERAS GEORGE M.;PETERSON KIRK D.;PILO HAROLD |
分类号 |
G11C5/14 |
主分类号 |
G11C5/14 |
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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