Patent ID: 9606510
Date: 2017-03-28
CPC Classifications: G04C,H02P

Claim:
1. A motor driver device comprising a horological motor driver with a setup interface and a configuration circuit, the setup interface being arranged for receiving configuration data from the configuration circuit, wherein the horological motor driver is arranged for controlling and powering a motor according to the configuration data, wherein the configuration circuit comprises a non-volatile memory, a memory controller and configuration registers connected the setup interface, this configuration circuit being arranged so that it is able to transfer the configuration data from the non-volatile memory via the configuration registers to the setup interface in response to a refresh signal provided by the horological motor driver to the memory-controller; wherein the configuration circuit comprises an additional circuitry for detecting a change in the configuration registers, wherein this additional circuitry is connected to the horological motor driver and arranged for providing this horological motor driver with a change signal indicating whether a change in the configuration registers has been detected, the horological motor driver being arranged so that it is able to trigger the refresh signal only when said change signal indicates a change in the configuration registers.