This board has two 8-bit ports of inputs/outputs.
One of them is ready to work with TWI
protocol, also known as I2C.
Connectivity to the input/output boards is done by set01_04_A cable.
Serial communication can be done via USB (set01_05) or RS232 (set01_03) using set03_11 cable. These communication boards can also supply voltage to this board.
Each function has a different connector size to
avoid connectivity mistakes.
There are three jumpers. One is a test led and the
other two allow TWI communication.
a quartz crystal. Internal fuses should be programmed properly before, or after,
there would not be enough accuracy for serial communications.
Programming of this chip is via a USB programmer (set03_09). This programmer has a jumper in
order to make slow programming (to set the internal fuses jumper should
be connected) or fast programming (without jumper for normal
programming, except for the fuses configuration).
Document revision :
- 2nd version
: Price updating
- 1st version
: Original document of
December 7th, 2010