Patent ID: 7313044

Claim:
An integrated semiconductor memory device with temperature-dependent voltage generation and that is operable in a first temperature range and in a second temperature range, the first temperature range lying above the second temperature range, the memory device comprising: at least one memory cell comprising a selection transistor that includes a control terminal to drive the selection transistor; a temperature sensor circuit configured to determine a temperature of the integrated semiconductor memory device and including an output terminal to generate a temperature-dependent control signal; a reference circuit including an output terminal to generate a temperature-independent reference signal; a comparator circuit including an input side and an output terminal to generate an activation signal; and a voltage generator circuit comprising an input terminal to apply the activation signal, a first output terminal to generate a first control signal and a second output terminal to generate a second control signal; wherein: the comparator circuit is connected, via its input side, to the output terminal of the temperature sensor circuit and the output terminal of the reference circuit; the output terminal of the comparator circuit is connected to the input terminal of the voltage generator circuit; the activation signal is generated as a first level activation signal when the temperature determined by the temperature sensor circuit lies in a first temperature range; the activation signal is generated as a second level activation signal when the temperature determined by the temperature sensor circuit lies in a second temperature range; the first control signal is fed to the control terminal of the selection transistor when the voltage generator circuit is driven with the first level activation signal; and the second control signal is fed to the control terminal of the selection transistor when the voltage generator circuit is driven with the second level activation signal.