Imagine a roomthermostat containing a clock and a calendar. All that does is opening/closing a circuitbreaker. It therefore stores a point in time on the internal calendar when the measuring resistor should compare with the related temperature for that point in time. Usually these thing can store 3 week and 1 weekend program.
Say now I want to build a circuit that only has the clock/calendar functionality with the possibility of opening/closing a circuitbreaker (no input values like temperature need to be read). Because I would like to schedule my points in time on a custom base, with a granularity of 1 minute and this for 50 years, I would need 100Mbyte of storage when the dates+times are stored in BCD and say if I would alternate each minute (this is the maximum of possibilities).
What Pic - Memory combination would I need for that kind of circuit say if I would like to store the dates by means of my PC using a USB interface ?
Say now I want to build a circuit that only has the clock/calendar functionality with the possibility of opening/closing a circuitbreaker (no input values like temperature need to be read). Because I would like to schedule my points in time on a custom base, with a granularity of 1 minute and this for 50 years, I would need 100Mbyte of storage when the dates+times are stored in BCD and say if I would alternate each minute (this is the maximum of possibilities).
What Pic - Memory combination would I need for that kind of circuit say if I would like to store the dates by means of my PC using a USB interface ?