Patent ID: 6934645

Claim:
A random access memory device including a temperature sensing circuit, the temperature sensing circuit comprising: a sensing device configured to hold a sensed voltage that varies with changes in temperature at the sensing device; a first comparator configured to receive the sensed voltage from the sensing device, the first comparator generating a first output signal; a second comparator configured to receive the sensed voltage from the sensing device, the second comparator generating a second output signal; a logic circuit configured to receive the first and second output signals; a first temperature reference circuit having a plurality of first reference voltages; a second temperature reference circuit having a plurality of second reference voltages; a first switch circuit coupled between the first temperature reference circuit and the first comparator, the first switch circuit controlled by the logic circuit such that a first reference voltage is applied to the first comparator; a second switch circuit coupled between the second temperature reference circuit and the second comparator, the second switch circuit controlled by the logic circuit such that a second reference voltage is applied to the second comparator; a first trimmer coupled to the first temperature reference circuit, the first trimmer being adjustable to adjust the first reference voltage; and a second trimmer coupled to the second temperature reference circuit, the second trimmer being adjustable to adjust the second reference voltage.