V850E2/Fx4 Application Board User's Manual
6. Precautions
6.1 Limitation of URTE2 for LIN communication
URTE2 cannot be used for LIN communication. The URTE2RX pin is multiplexed with the FLMD1
function, and requires pull-down resistor R60. The RXD pin of the LIN transceiver is an open-
drain output, and requires pull-up resistor R107. When URTE2 is connected to LIN0 via jumpers
J17 and J19, the resulting receive signal is invalid. As a result, URTE2 cannot be used for LIN
communication and pins 2 and 3 of jumper J19 should be left, unconnected.
6.2 LEDs will not illuminate
Board Version and Serial Number Applicability
AB-050-Fx4-X-Q-NONE-V2
CA00C0071D - CA00C0100D
other
applicable not
applicable
Components Q2 and Q3 are populated with an incorrect component that prevents LEDs D4, D5,
D10 and D11 from illuminating. No damage can occur as a result of an attempt to operate the
LEDs. Note that indicator LEDs for power rails VDDA and VDDB (D4 and D5) will not illuminate.
There is no workaround for this precaution.
R20UT0009EU0103 Rev.1.03
Page 23
May 21, 2012