DD
IIRR
EE
CC
TT
PP
OO
RR
TT
AA
CC
CC
EE
SS
SS
CC
OO
NN
NN
EE
CC
TT
OO
RR
SS
DIRECT PORT ACCESS CONNECTORS
All microcontroller input/output pins can be accessed via IDC-10 connectors (2x5) placed along the
right side of the board. For each microcontroller port there is one connector providing up to eight
port pins and two additional pins connected to VCC and GND.
These connectors can be used to connect the system to external peripherals such as Serial Ethernet,
Compact Flash, MMC/SD, ADC, DAC, CAN, RTC, RS-485 etc. If on-board and external peripherals use
the same pins then on-board peripherals must be disconnected from the microcontroller using appropri-
ate jumpers. The connectors can also be used for attaching logic probes or other test equipment.
3
32
2
Figure 44
Direct port access connectors
Figure 45
Connecting external
peripheral via flat cable