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US 2004/0170067 A1Published application
Semiconductor memory device permitting control of internal power supply voltage in packaged state
AssigneeRenesas Technology Corp.
InventorYasuhiro Kashiwazaki
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Abstract
A selector selects one standard voltage from among divided voltages from a voltage dividing circuit and a reference voltage from a reference voltage generating circuit, in accordance with a test mode enable signal and a reference voltage select signal. An internal voltage generating circuit receives the standard voltage from the selector and generates an internal power supply voltage.
Claims4
A semiconductor memory device accommodated in a package, comprising:
- a reference voltage generating circuit generating a reference voltage based on an external power supply voltage;
- a voltage dividing circuit dividing an external voltage supplied from the outside of said package into a plurality of divided voltages having voltage values different from each other;
- a select circuit selecting one standard voltage from among said reference voltage and said plurality of divided voltages in accordance with a control signal supplied from the outside of said package;
- and
- an internal voltage generating circuit generating an internal power supply voltage based on said standard voltage.
2 more elements
Dependencies are inferred from the claim text.