Re: Help needed for microcontroller based project.


"adam" <adam.mashraqui@xxxxxxxxx> wrote in message
news:1136647750.522989.5500@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hi Group,
><snipped>
> LOGIC: 8 channels connected to the MUX, depending on which input is
> enables, MUX selects it and sends it to the COMPARATOR. The second
> input to comparator is a reference voltage. Comparator's output to port
> 1.0. Ports 1.1,1.2,1.3 as selects lines to MUX. Ports 1.4,1.5 for
> intefacing with memory. Ports 3.0,3.1 as RXD and TXD. Ports 3.2,3.3,3.4
> for interfacing with RTC.
> Using select lines of MUX , we wish to determine which channel is
> enabled.
> using RTC we wish to sore the real time and pin number in EEPROM. Using
> RS232C we wish to display this data on a PC.
><snipped>
How often are you going to be writing this 'real time' , and pin number to
the EEPROM?. If it is more than a few times an hour, look at FRAM instead.
It is amazing how quickly the life of a typical EEPROM, can get used up,
if data is changing quickly.

Best Wishes


.