|¿ Reality ?||PIC Microcontollers|
Some while ago, back in Grad School, I discovered the PIC microcontroller. This line of chips, made by Microchip allow for projects to have that little bit of needed digital smarts in a fairly small package and cheap. They're effectively a disposable computer, the cheapest ones going for $0.50 each in bulk from online suppliers, while modestly powered ones can be had for a few bucks or less.
Now, unfortunately, other things put the interest on hold for a while, but recently I've return and am starting to make progress. So I figured I'd do some documenting. I did pick up the book Programming and Customizing PICmicro Microcontrollers (I've got the second edition) and it has a bunch of useful material.
The main chip I've been using is the pic16f777. This is a low to mid range chip with enough features to do a bunch of interesting things. It sports a bunch of I/O pins and a USART.
To make it on the above charts, the computed baud rate had to be within 1% of the desired value. If one doesn't wish to bother with interoperating with other off-the-shelf devices, then the available baud rates will vary between 1,220 to 1,250,000 baud for the 20MHz device.