I've not ever seen a micro with RS-anything built into the micro itself. I wouldn't want one, either. If the RS-485 (or RS-422/232/etc.) part of the circuit got fried, you'd have to replace the entire micro, not just the much less expensive transceiver chip. ----- Original Message ----- From: "Jesse Lackey" To: "pic microcontroller discussion list" Sent: Saturday, February 25, 2006 10:56 AM Subject: [EE] microcontroller with built-in RS-485? > Hello all, I often have designs that need rs-485 with some relatively > simple microcontroller code, and it is always been a two-chip solution: > 75176 (or equivalent with improvements) and a PIC of some sort. > > Does anyone know of a microcontroller with a built-in RS-485 > transceiver? Ideally it would have a UART (pretty much a necessity, but > not absolutely required), 16 pins or less, and a decent C compiler > available from the vendor or 3rd party that doesn't cost a kilobuck. > Freeware versions limited to say 4K codespace are acceptable. > > I haven't done an exhaustive search but I've never seen rs-485 built-in > to a micro, which is a bit surprising in a way. > > Anyway, love to hear anyone's experiences. > Thanks- > Jesse > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist