Semiconducting memory device on substrate - contains voltage supply converter, bias voltage generator drive by external or internal supply depending on memory state
The device contains a converter (2) of an external supplyvoltage (Vcc) to a lower internal supply voltage (IVcc), a memory device (1) supplied by the internal voltage for storing data, a substrate bias voltage generator (3) for holding the substrate (CH) at a constant voltage and a switching device. The bias voltage generator is driven by the external or internal supply voltage. The switching device changes from one supply to the other according to whether the memory device is active or not. USE/ADVANTAGE - For a semiconducting memory device on a substrate. The current consumption of the substrate bias voltage generator device is reduced.