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US 2010/0165777 A1Published application
Circuit for voltage pump and a semiconductor memory apparatus using the same
AssigneeHynix Semiconductor Inc.
InventorYoung Jo KO
Life of this patent
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Abstract
A voltage pump circuit includes a pumping unit configured to include a plurality of pumps and perform voltage pumping and a pumping control unit configured to generate control signals for selectively driving the pumps in response to a mode determination signal.
Claims13
A voltage pump circuit, comprising:
- a pumping unit configured to include a plurality of pumps and perform voltage pumping;
- and
- a pumping control unit configured to generate control signals for selectively driving the pumps in response to mode selection signals.
A semiconductor memory apparatus configured to be operated in a capacity smaller than a designed capacity in response to mode selection signals, the apparatus comprising:
- a sequential generation unit configured to generate driving signals of plural bits in response to a pumping enable signal enabled in accordance with a level of a pumping voltage;
- a pumping control unit configured to generate pump off signals in response to the mode selection signals and a driving signal of at least 1 bit among the driving signals of plural bits;
- and
- a pumping unit configured to output the pumping voltage in response to the driving signals and the pump off signals.
1 more element
Dependencies are inferred from the claim text.