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US 8,526,266 B2Granted
Row-decoder circuit and method with dual power systems
AssigneeQUALCOMM Incorporated
InventorsJung Pill Kim, Tae Hyun Kim, Seung H. Kang
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Abstract
A Spin-Transfer-Torque Magnetic Random Access Memory includes a dual-voltage row decoder with charge sharing for read operations. The dual-voltage row decoder with charge sharing for read operations reduces read-disturbance failure rates and provides a robust macro design with improved yields. Voltage from one of the power supplies can be applied during a write operation.
Claims6
A memory, comprising:
- a first voltage driver coupled to a common node and configured for supplying a word line voltage to a word line of the memory;
- at least one second voltage driver coupled to the common node and configured to supply a core voltage to the word line of the memory;
- control circuitry configured to control the first voltage driver and the second voltage driver and to provide a delay period between turning off the first voltage driver and turning on the second voltage driver with respect to memory access operations;
- a first capacitive coupling coupled to the common node;
- a second capacitive coupling coupled to the word line;
- and
- a word line driver transistor coupled between the first capacitive coupling and the second capacitive coupling.
4 more elements
Dependencies are inferred from the claim text.