Electronic circuit for controlling the operation of a watch

An electronic watch circuit for controlling the operation of a watch movement, comprising

• a first integrated circuit including control functions realized in control logic connected to a non-volatile memory comprising OTP memory, which contains data values to be transmitted to registers,
• peripheral members and peripheral member drivers connected to said peripheral members, wherein the peripheral member drivers are configured to interact with the peripheral members of the watch,
• a quartz crystal providing a clock base frequency to the first integrated circuit, and
• connecting means arranged for enabling the peripheral member drivers, the quartz crystal, the non-volatile memory, and the control logic to communicate data relating to the operation of said watch to each other,
• wherein the electronic watch circuit further comprises a microcontroller as a second integrated circuit being provided separate from the first integrated circuit including a microprocessor connected to a programmable memory, wherein the first integrated circuit as well as the microcontroller comprise readable and writable registers, wherein said first integrated circuit comprises a first interface, said microcontroller comprises a second interface and the microcontroller is connected with the first integrated circuit by said first and second interfaces allowing bidirectional exchange of data to be read and written from and into said registers between the microcontroller and the first integrated circuit.