Unfortunately, no. All reset controllers seem to consume at least 1 uA. Perhaps the F169 is better in this area? TI seem to have worked on a brownout detector and also added a supply voltage supervisor in the f169 , both of these were/are missing in the F149. (And, the strange Reset problem the 149 has seems to catch people now and then!) Fortunately, the F169 is pin compatible to the 149, so testing should present little in the way of drama!
The F149 seems to suffer when Vcc falls into a grey area, and is then re-applied. Many devices (not just microprocessors) get a little strange when the supply is between 0.20 .. 0.90 volts, which is why a rise time is often stated for the application of power. Cheers Harry -----Original Message----- From: mspgcc-users-ad...@lists.sourceforge.net [mailto:mspgcc-users-ad...@lists.sourceforge.net]on Behalf Of Steve Underwood Sent: Saturday, January 10, 2004 4:13 PM To: mspgcc-users@lists.sourceforge.net Subject: Re: [Mspgcc-users] What to do with unused port pins? Dmitry K. wrote: >On 10 Jan 2004 13:20 Steve Underwood wrote: > > >>Do you knwo of an external reset controller that consumes just a few >>nano amps, and won't destroy the low power qualities of the 149? :-\ >> >> >> > >Nano?? >Enough old MAX811*: 5 - 6 micro amps at a distance from reset level >(this is tested). > >Regards. > > > 5-6uA would really screw up my 149 products currently consuming about 1uA. I think the battery life would suffer a little :-) You can get reset devices below 1uA, but that still nearly doubles the current consumption. Regards, Steve ------------------------------------------------------- This SF.net email is sponsored by: Perforce Software. Perforce is the Fast Software Configuration Management System offering advanced branching capabilities and atomic changes on 50+ platforms. Free Eval! http://www.perforce.com/perforce/loadprog.html _______________________________________________ Mspgcc-users mailing list Mspgcc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mspgcc-users
