Data Sheet

LABCENTER ELECTRONICS LTD.

Now place the resistor above and to the left of the memory device in the same way as before.

Then, simply left click again on the Editing Window to start placing the second 10K resistor just

beside the first one.

Next, select CHIPRES100R, rotate appropriately (see above) and place two to the left of the

memory device in line with the SCK and SDA pins.

You can also rotate parts 'live' when in placement mode. Left click the mouse once

to enter placement mode (at this point you will see the component outline following

the mouse) and then use the '+' and '-' keys on the numeric keypad to rotate the

component as you are placing it. Left click again to commit the placement in the

normal way.

We use terminals in schematic design simply to terminate a wire and assign a connection. Often

this connection is to either power or ground but it can just as easily be to another wire

elsewhere on the circuit. Terminals allow us both to vastly reduce actual wiring (avoiding

spaghetti schematics) and to make connections between different sheets on the schematic. To

place terminals, start by selecting the terminal mode; this will switch the Object Selector and

provide us with a listing of the available terminal types.

We need a power terminal, ground terminal and also two default terminals for the connections

on the I2C bus. From this stage, placement and orientation are identical to any other object in

Proteus and should now be quite familiar. Place the appropriate terminals in their approximate

locations now, such that the area around the memory device now looks something like the

following

Selecting the Default Terminal

Unless you are fairly skillful, you are unlikely to have got all the components oriented and

positioned entirely to your satisfaction at the first attempt, so now is a good time to practice

moving things around as discussed earlier. In particular note that you can drag a tagbox around

a group of objects to move the lot in one go.