Datasheet

page 27
v7
Controller Area Network (CAN or CAN
bus) is a vehicle bus standard designed
to allow microcontrollers and devices to
communicate with each other within a
vehicle without a host computer. CAN
is a message-based protocol, designed
specically for automotive applications
but now also used in other areas such
as industrial automation and medical
equipment. EasyPIC Fusion
™
v7 is
equipped with SN65HVD230 – a 3.3V
CAN Transceiver and a pair of screw
terminals which provide microcontrollers
with integrated CAN controller with
the necessary physical interface for
CAN communication. Make sure to
correctly connect negative and positive
dierential communication lines before
using this module.
C34
100nF
VCC-3.3V
R57 10
CN28
CANH
CANL
TX-CAN
RX-CAN
1
2
3
54
6
7
8
D
GND
Vdd
R Vref
CANL
CANH
Rs
U7
SN65HVD230
VCC-3.3V
1
2 3 4 5 6 7 8
O
N
SW12
RG1
RG0
DATA BUS
Enabling CAN
Figure 13-1:
CAN connection
schematic
CAN
communication
communication
In order to enable CAN communi-
cation, you must push SW12.7
(RG1) and SW12.8 (RG0) to
ON position. This connects the
TX and RX lines to appropriate
microcontroller pins.
Figure 13-2:
enabling
CAN
communi-
cation