Ambient Light Sensor; Dip Switch; Reset Switch - NEC EV-K0-HCD Hardware User Manual

EV-K0-HCD Evaluation Kit User's Manual

2.11 Ambient Light Sensor

The EV-K0-HCD board also populates a miniature surface-mount light sensor, part number APDS-
9005 from Avago Technologies, to sense the intensity of ambient light. By default, this sensor is
disconnected from the µPD78F8024 MCU's A/D converter input. To connect to it, place DIP switch
(SW1) position 6 in the "ON" position.

2.12 DIP Switch

The EV-K0-HCD board uses a 6-position DIP switch (SW1) for configuration purposes. The following
table shows the various configuration options.
Switch No.
SW1-1
SW1-2
SW1-3
SW1-4
SW1-5
SW1-6

2.13 Reset Switch

The on-board reset switch (refer to SW2 in the schematics) can be used to reset the
µPD78F8024 MCU.
Boa rd Configuration Options
Table 5 .
OFF
USB programming mode
Don't Care
User-defined
RS-485 enabled / RS-232 disabled
Temperature sensor disabled
Ambient light sensor disabled
8
Setting
ON
Normal operation
Self-flash programming mode
User-defined
RS-232 enabled / RS-485 disabled
Temperature sensor enabled
Ambient light sensor enabled