Semiconductor devices and semiconductor systems
AssigneeSK hynix Inc.
InventorDong Keum Kang
Life of this patent
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Abstract
A semiconductor system includes a first semiconductor device and a second semiconductor device. The first semiconductor device outputs a test mode enable signal and a switch control signal and receives test data. The second semiconductor device generates first internal data and second internal data in response to the test mode enable signal, drives a first pad in response to the first internal data, drives a second pad in response to the second internal data, and drives a third pad in response to the first and second internal data according to the switch control signal.
Claims20
A semiconductor system comprising:
- a first semiconductor device configured for outputting a test mode enable signal and a switch control signal and configured for receiving test data;
- and
- a second semiconductor device configured for generating first internal data and second internal data in response to the test mode enable signal, configured for driving a first pad in response to the first internal data, configured for driving a second pad in response to the second internal data, and configured for driving a third pad in response to the first internal data and the second internal data according to the switch control signal,
- wherein the first internal data and the second internal data are outputted simultaneously.
A semiconductor device comprising:
- a first data output unit configured for receiving first internal data in response to an internal clock to drive a first pad;
- a second data output unit configured for receiving second internal data in response to the internal clock to drive a second pad;
- and
- a switch unit configured for electrically coupling the first pad, the second pad and a third pad to one another in response to a switch control signal,
- wherein, if the switch control signal is enabled in a test mode, the first data output unit and the second data output unit drive the third pad and
- wherein the first internal data and the second internal data are outputted simultaneously.
A semiconductor system comprising:
- a first semiconductor device configured for driving a first pad in response to first internal data;
- and
- a second semiconductor device configured for including a second pad coupled to the first pad, a third pad, and a fourth pad, wherein the second semiconductor device is configured for driving the second pad and the third pad in response to second internal data, and configured for driving the fourth pad in response to the first internal data and the second internal data if a switch control signal is enabled in a test mode,
- wherein the first internal data and the second internal data are outputted simultaneously.
Dependencies are inferred from the claim text.