| 摘要 |
Semi- adaptive voltage scaling (SAVS) concept for systems, devices and methods for determining minimal supply voltages for digital electronic semiconductor circuitry, e.g. microprocessors, of electronic devices under production testing and "real" operating conditions. The new SAVS operates in a closed- loop during a production test phase of the circuitry and in an open- loop mode in an application (operation) phase of the semiconductor circuitry. During production testing, a lowermost level of the supply voltage for the semiconductor circuitry is determined at one single defined temperature at which all operating specifications of the circuit are fully met. The lowermost level is stored in a dedicated electronic memory of the circuitry together with temperature dependent parameters. Afterwards, when the digital electronic circuitry is operated in a "real" application, e.g. a mobile phone, the inventive device and method reads the previously measured and proven data out from the electronic memory and regenerates the minimum level of supply voltage for the circuitry, taking into account the actual temperature of the application. As a result, the digital semiconductor circuitry in the "real" application is supplied with a minimum level of supply voltage, whereby all specified parameters of the circuitry are fully met. Thus, a power consumption of the circuitry is advantageously reduced to an absolute necessary minimum. |
