Electronic circuit controlling the operation of peripheral members of the watch
The electronic circuit ( 1 ) controls the operation of the peripheral members of a watch. The circuit ( 1 ) includes a processor ( 2 ) connected to a non-volatile memory ( 3 ), which contains instructions to be carried out, peripheral member controllers ( 4 ) for interacting with peripheral members of the watch and connecting means ( 6 a, 6 b, 7 ). These connecting means ( 6 a, 6 b, 7 ) are arranged to enable the peripheral member controllers ( 4 ), the non-volatile memory and the processor ( 2 ) to communicate data relating to the operation of said watch to each other. This electronic circuit ( 1 ) further includes initializing means ( 8 ) able to act on the peripheral member controllers ( 4 ) to initialize said controllers so that they can execute operations independently of the processor ( 2 ) and/or the non-volatile memory ( 3 ).
1. An electronic circuit for controlling the operation of a watch, wherein the electronic circuit includes:
(a) a processor connected to a non-volatile memory that contains instructions to be carried out;
(b) peripheral member controllers for interacting with peripheral members of the watch;
(c) connecting means arranged for enabling the peripheral member controllers, the non-volatile memory and the processor to communicate data relating to the operation of the watch to each other; and
(d) initialising means able to act on the peripheral member controllers to initialise the peripheral member controllers by sending data without actions of the processor and enable the peripheral member controllers to carry out operations independently of the processor, or independently of the non-volatile memory, or independently of the processor and the non-volatile memory.
2. The electronic circuit according to claim 1 , wherein the initialising means comprises a programmable memory that stores configuration data for the peripheral member controllers so that the peripheral member controllers can be initialised in accordance with the peculiar features of each peripheral member, or the inputs/outputs of each peripheral member controller with the other elements of the electronic circuit, or in accordance with the peculiar features of each peripheral member and the inputs/outputs of each peripheral member controller with the other elements of the electronic circuit.
3. The electronic circuit according to claim 2 , wherein a circuit controller commands the configuration of the peripheral member controllers.
4. The electronic circuit according to claim 2 , wherein the peripheral member controllers can be configured automatically when the electronic circuit is switched on.
5. The electronic circuit according to claim 2 , wherein configuration of the peripheral member controllers is controlled in accordance with a value of a bit written into said programmable memory.
6. The electronic circuit according to claim 1 , wherein the connecting means include at least one communication bus and at least one multiplexer configured by data from the initialising means and arranged for controlling communications between various elements of the electronic circuit.
7. The electronic circuit according to claim 1 , wherein the processor is capable of passing from a passive mode to an active mode, in which the processor can execute instructions following generation of an interruption caused by one of the peripheral members.
8. The electronic circuit according to claim 7 , wherein when an interruption is generated, the non-volatile memory also passes from a passive mode to an active mode in order to communicate with the processor.
9. The electronic circuit according to claim 1 , wherein the non-volatile memory is divided into two zones, including a first zone containing standard application code lines and a second zone containing specific application code lines.
10. A method of starting the electronic circuit according to claim 1 , wherein the method includes the steps of:
i. accessing the initialising means;
ii. reading the data stored in the initialising means; and
iii. executing configuration instructions stored in the initialising means.
11. The method according to claim 10 , wherein when the processor passes from a passive mode to an active mode in which the processor can execute instructions, the method further includes the steps of:
iv. receiving an interruption signal from at least one peripheral member of the watch, wherein the interruption signal is transmitted to the processor via the connecting means;
v. switching on the processor;
vi. executing the instruction associated with the interruption signal, via the processor; and
vii. placing the processor in passive mode once the instruction has been executed.
12. The electronic circuit according to claim 1 , wherein only one oscillator is used for clocking all of the watch elements.
13. A watch comprising an electronic circuit for controlling operation of the watch, wherein the electronic circuit includes:
(a) a processor connected to a non-volatile memory that contains instructions to be carried out;
(b) peripheral member controllers for interacting with peripheral members of the watch;
(c) connecting means arranged for enabling the peripheral member controllers, the non-volatile memory and the processor to communicate data relating to the operation of the watch to each other; and
(d) initialising means able to act on the peripheral member controllers to initialise the peripheral member controllers by sending data without actions of the processor and enable the peripheral member controllers to carry out operations independently of the processor, or independently of the non-volatile memory, or independently of the processor and the non-volatile memory.
14. The electronic circuit according to claim 13 , wherein only one oscillator is used for clocking all elements of the watch.