Floating data line circuits and methods
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsManish ARORA, Hung-Jen LIAO, Yen-Huei CHEN, Nikhil PURI, Yu-Hao HSU
Life of this patent
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Abstract
A write line circuit includes a power supply node configured to carry a power supply voltage level, a reference node configured to carry a reference voltage level, a first input node configured to receive a first data signal, a second input node configured to receive a second data signal, a third input node configured to receive a control signal, and an output node. The write line circuit is configured to, responsive to the first data signal, the second data signal, and the control signal, either output one of the power supply voltage level or the reference voltage level on the output node, or float the output node.
Claims20
A write line circuit comprising:
- a power supply node configured to carry a power supply voltage level;
- a reference node configured to carry a reference voltage level;
- a first input node configured to receive a first data signal;
- a second input node configured to receive a second data signal;
- a third input node configured to receive a control signal;
- and
- an output node,
- wherein the write line circuit is configured to, responsive to the first data signal, the second data signal, and the control signal, either:
- output one of the power supply voltage level or the reference voltage level on the output node, or
- float the output node.
A circuit comprising:
- a write driver coupled with a segment of an array of memory cells, the write driver configured to receive a first data signal at a first input node and generate a write line signal on a data line responsive to the first data signal;
- and
- an interrupt circuit coupled between the write driver and a power supply node configured to carry a power supply voltage level,
- wherein the interrupt circuit is configured to receive a second data signal at a second input node and decouple the write driver from the power supply node responsive to the second data signal.
A method of floating a data line, the method comprising:
- receiving a first data signal at a first input node of a driving circuit coupled with the data line, a power supply node, and a reference node;
- receiving a second data signal at a second input node of the driving circuit;
- and
- in response to the first data signal and the second data signal, using the driving circuit to decouple the data line from the power supply node and the reference node.
Dependencies are inferred from the claim text.