UM0943
Hardware description
Doc ID 17476 Rev 1
7/22
1.4
DIP switch/external interface connector
The board consists of an 8-position DIP switch (SW2). All the switches should be in the ON
position (towards circle/ON side) for the demo to work. When the device STLED325 is
required to be isolated from the onboard STM8S207K6 host and controlled through an
external I
2
C host, all the switches should be moved to the OFF position. Then, the
STLED325 control pins can be accessed through the external interface connector (J3). A
detailed description of the external interface connector is provided on the bottom silkscreen
of the board and also listed below for reference.
Figure 7.
External interface connector
1.5 IR
sensor
connector
A 38 kHz IR sensor is mounted at J4 for IR control and supports RC5 protocol.
1.6 Interrupt
LED
There is a blue interrupt LED (D21 : INTR) which blinks whenever an interrupt is asserted
from the device which may be due to a front panel key press, remote control key press, RTC
alarm, wake-up from standby, etc.
www.BDTIC.com/ST
