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US 2014/0153342 A1Published application
Semiconductor integrated circuit and method for monitoring reference voltage thereof
AssigneeSK hynix Inc.
InventorSe Jin YOO
Life of this patent
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Abstract
A semiconductor integrated circuit includes a write path coupled to a pad, a read path coupled to the pad, and a reference voltage output control block configured to apply a reference voltage to the pad through the write path in response to a reference voltage monitoring signal. The read path is electrically isolated from the pad in response to the reference voltage monitoring signal.
Claims20
A semiconductor integrated circuit comprising:
- a write path electrically coupled to a pad;
- a read path electrically coupled to the pad;
- and
- a reference voltage output control block configured to apply a reference voltage to the pad through the write path in response to a reference voltage monitoring signal,
- wherein the read path is electrically isolated from the pad in response to the reference voltage monitoring signal.
2 more elements
A semiconductor integrated circuit comprising:
- a pad;
- a core block;
- an input buffer configured to receive external data through the pad;
- a peripheral circuit block configured to write the external data which is transmitted through the input buffer into the core block, or to receive data read from the core block;
- an output driver configured to receive the data read from the core block through the peripheral circuit block, and to output the data to the pad;
- and
- a reference voltage output control block configured to apply an internal reference voltage to the pad in response to a reference voltage monitoring signal,
- wherein the output driver is electrically isolated from the pad in response to the reference voltage monitoring signal.
5 more elements
A method for monitoring a reference voltage of a semiconductor integrated circuit, comprising the steps of:
- entering a reference voltage monitoring mode;
- outputting a reference voltage to a predetermined pad through a write path of the semiconductor integrated circuit when entering the reference voltage monitoring mode;
- and
- electrically isolating a read path of the semiconductor integrated circuit from the pad when entering the reference voltage monitoring mode.
1 more element
A semiconductor integrated circuit comprising:
- a pad;
- an input buffer configured to receive a write data from the pad and electrically coupled to the pad;
- an output driver configured to transmit a read data to the pad and selectively coupled to the pad in response to a reference voltage monitoring signal.
Dependencies are inferred from the claim text.