Bob,

For low battery application 18LF452 is better.

Andre




-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of
Bob Blick
Sent: Thursday, May 26, 2005 1:38 PM
To: Microcontroller discussion list - Public.
Subject: Re: [PIC] Best Pic for the job

> 1. Lowest power consumption pic
> 2. Run 6 to 12 Leds
> 3. Work on battery's - Like 4 double AA's
> 4. Can run some sort of clock program that is user programmable to turn
> off and on at certain times. - Still trying to master the code on this
> one, also I will take interface Ideas on this one. Could it be possible
> to use jumper settings for this?
> Thanks for the input - a humble new guy.

If you are running a clock, then you need to run all the time, or have a
pic that can take a second crystal for realtime clock at 32.768 KHz. Your
real power consumption, especially if you run the LEDs even occasionally,
is not going to be affected much by your choice of PIC.

How about 2 or 3 AA batteries? Then you will not need a regulator(save
current that way too).

Since you are a beginner, do it as simply as possible, which means no
multiplexing of pins. Get a 40 pin PIC like the 16F877(A) or 18F452.

Cheers,

Bob



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