NXP Semiconductors freescale MPC5668E, User Manual, Page: 36 / 54

MPC5668EVB Users Manual Rev 0.1 May 2009
MPC5668EVBUM/D Page 32 of 29
The prototyping area is
located on the right hand
side of the EVB, above the
user connectors.
6.2 Prototyping Area and
User LED’s / Switches
There is a rectangular prototype area on the EVB, consisting of a 0.1inch pitch array of through-hole plated
pads. Power from all three voltage regulators is readily accessible along with GND. This area is ideal for the
addition of any custom circuitry. Adapters are available to convert SMD devices to 0.1inch pitch through-hole.
Some of the pads in the prototyping area are connected to the CAN C – F pins of the MCU as well as power
and the DB9 connectors. This allows an additional 4 CAN physical interfaces to be added to the EVB for
evaluation with the MCU. The layout of this is shown in Figure X below.
Note: The power supply lines to the prototype area are connected directly to the regulator outputs and not
connected to the jumpered MCU supply.
There are 4 active low user LED’s DS4, DS5, DS6 and DS7, These are driven by connecting a logic 0 signal
to the corresponding pin on 0.1” header P15 (user LED’s).
There are 4 active high pushbutton switches SW2, SW3, SW4 and SW5 which will drive 5V onto the
respective pins on 0.1” connector P16 when pressed. The switch outputs are pulled to GND with a 10K
resistor network.