Instructions

121 C-Control Pro IDE

2.2.11 UNIT-BUS Ext-Board

The C-Control PRO AVR32Bit UNIT BUS Ext board (Conrad Order No. 192673) is designed to ex-

pand the functionality of the C-Control PRO AVR32Bit products. The product is designed as an open

breadboard experimental circuit board with a pitch of 2.54mm. It is equipped with two 6-pin header

connectors and is intended only for the C-Control UNIT-BUS. The board serves to build your own cir-

cuits. For circuit design and the comfortable replica the circuit board is printed with a coordinate

system. The board can directly be mounted under or next to the Mainboard. PCB spacers are

needed for "sandwich" mounting with a minimum of 20mm length and a thread diameter of 3mm.

Connection and Commissioning

Make sure that before you connect the modules to your C-Control Pro AVR32Bit Mainboard all con-

nections to connected devices are separated and voltage free. On the C-Control PRO AVR32Bit Ap-

plicationboard and Mainboard, a 6-pin header connector is labeled UNIT-BUS. This header connector

is suitable for connecting the UNIT-BUS Extension boards. On these pins, I2C, UART and 5V are

passed out. The C-Control PRO AVR32Bit Unit works with 3.3V level, and extensions, as well as the

older C-Control I2C-bus modules, use 5V. Therefore, between the C-Control PRO AVR32Bit UNIT

and the UNIT-BUS are level converters that converts the 3.3V signals of the UNIT to 5V signals of the

UNIT-BUS.

UNIT-BUS Pin Configuration

The UNIT-BUS Extension board gets connected via a 6-pin ribbon cable with pin header connector

(female). Because depending on the application, the cable lengths are varying, we offer these com-

ponents for self-assembly using the following order numbers:

Ribbon cable RM1.27 0.05mm²: Order No. 607237

Pin header connectors 2x3 RM:2.54mm: Order No. 742063

Matching connection cable pre-assembled (length 35cm) Order No. 198876

To get a clean signal for long cable lengths and high transmission capacity use the I2C line driver

(Order No. 198280)