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US 2015/0310936 A1Published application
Monitoring device of integrated circuit
AssigneeSK hynix Inc.
InventorKie-Bong KU
Life of this patent
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Abstract
A semiconductor memory device includes a plurality of data input/output pads configured to transmit and receive data to and from memory cells, an alert pad configured to output data error information while the data is transmitted and received, and a monitoring device configured to output the data error information to the alert pad in a first mode and to output monitoring information to the alert pad in a second mode.
Claims12
1-11. (canceled)
A monitoring device of an integrated circuit, comprising:
- an error detection signal selection unit configured to select one of a first error detection signal, including data error information, and a second error detection signal, including monitoring information, in response to an enable signal, and to output an error signal;
- an output driver configured to drive a pad in response to the error signal;
- an input driver configured to receive an alert signal inputted through the pad and drive the alert signal as an internal alert signal in a third mode;
- and
- a test mode control unit configured to detect the monitoring information and output the second error detection signal when the integrated circuit is not in the third mode, and to output the internal alert signal as the second error detection signal to an internal circuit in the third mode.
2 more elements
A method for monitoring an integrated circuit, comprising:
- selecting one of a first error detection signal, including data error information, and a second error detection signal, including monitoring information, in response to an enable signal, and outputting an error signal;
- driving a pad in response to the error signal;
- receiving an alert signal inputted through the pad and driving the alert signal as an internal alert signal in a third mode;
- and
- detecting the monitoring information and outputting the second error detection signal when the integrated circuit is not in the third mode, and outputting the internal alert signal as the second error detection signal to an internal circuit in the third mode.
2 more elements
Dependencies are inferred from the claim text.