Implementing a Software UART

When building circuits, many peripherals accept data via a serial, RS232-style connection. Cheap micro controllers(e.g. PIC16F84A) don’t have an internal UART though…”bit banging” a port is due.

Dallas Maxim has published an application note on how to implement a software UART on one of its MAX controllers; but the information is also useful for most other controller types.

I needed sth like this a few weeks ago…enjoy:
http://www.maxim-ic.com/appnotes.cfm/appnote_number/4041

Related posts:

1. Accessing SD cards with a microcontroller
2. Boosting linear regulator output current
3. Emulating Li-Ion batteries with a NiMH cell
4. USB for your own hardware-with the MAX3420E
5. Accessing an SD card via SPI