Patent ID: 8322922

Claim:
A method of outputting temperature data of sensed temperature of a semiconductor device, comprising: during a power-up operation, generating a pulse signal, in response to a booting enable signal activated in response to a power-up signal, the generating being inactivated in response to a mode setting signal; comparing, in response to the pulse signal, a reference voltage independent of temperature with a sense voltage that varies according to a temperature change of the semiconductor device, to provide a comparison signal; and changing, in response to the comparison signal, the temperature data of the sensed temperature of the semiconductor device, wherein changing the temperature data further comprises: generating the reference voltage having a level corresponding to the temperature data; producing the sense voltage that varies according to temperature change; comparing the reference voltage with the sense voltage and generating the comparison signal; and when the booting enable signal is activated, changing the temperature data while sequentially varying a change bit of the temperature data from a predetermined bit to a lower bit in response to the comparison signal.