Thanks David, the thing is that I'm going to count up/down and all I need is just about it.
~d On Thursday 21 November 2002 12:55, David Brown wrote: > > has anybody experience in > > 1. cascading 74f579 (8 bit bidirectional counter or are there more bits > > up/down counters which work up to 10 MHz?) > > 2. interfacing it (5v vcc) with msp430 via latch > > Are you trying to use the outputs of the counter to drive something else, > with the msp430 providing the clock and direction, or are you getting the > clock and direction externally, with the msp430 reading reading the counter > output? > > Cascading two counters should be just a matter of connecting the highest > output bit of one counter into the clock of the second one, at least as > long as you are only counting in one direction. Changing directions might > cause complications. > > Converting from 5V to 3.3V is easy enough, if you don't mind wasting a bit > of power. Connect a resistor in series, with a diode to the 3.3V line. In > fact, with a high enough resistor (say, 47k) you can just rely on the 3.3V > part's internal ESD protection diodes. Connecting a 3.3V output to a 5V > logic chip is normally pretty easy too - just connect it straight in. In > most cases, it should work fine. > > > > > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf > _______________________________________________ > Mspgcc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/mspgcc-users -- /******************************************************************** ("`-''-/").___..--''"`-._ (\ Dimmy the Wild UA1ACZ `6_ 6 ) `-. ( ).`-.__.`) Enterprise Information Sys (_Y_.)' ._ ) `._ `. ``-..-' Nevsky prospekt, 20 / 44 _..`--'_..-_/ /--'_.' ,' Saint Petersburg, Russia (il),-'' (li),' ((!.-' +7 (812) 3468202, 5585314 ********************************************************************/
