UG-1888
User Guide
Rev. 0 | Page 4 of 16
EVALUATION BOARD SETUP
QUICK START PROCEDURE
The ADP8860SHIELD-EVALZ and the ADP8861SHIELD-
EVALZ directly tie the input of the LEDs and the
the
to the power rails of the host board (
), which eliminates the need for external power
supplies in the evaluation. In addition, this evaluation incorporates
graphical user interfaces (GUIs) for Windows® PC and Android®
smartphones via Bluetooth®.
Based on the schematics (see Figure 25 and Figure 26), the
ADP8860SHIELD-EVALZ and the ADP8861SHIELD-EVALZ
have two LED groups: display backlight and keypad backlight.
The display blacklight LEDs include seven LEDs that can connect
directly to the D1 to D7 pins of the ADP8860 or the ADP8861
via the P5 to P13 headers. The keypad backlight LEDs include
10 LEDs, and each of these LEDs has configurable series resistance.
The keypad backlight LEDs are only tied to the D7 pin of either
chip via the P13 header.
To enable the keypad backlight LEDs for either the
ADP8860SHIELD-EVALZ or the ADP8861SHIELD-EVALZ,
connect a jumper to P14 and between Pin 2 and Pin 3 of P13.
When the keypad backlight LEDs are enabled, these LEDs disable
one of the display backlight LEDs connected to Pin 1 of P13 for
both the ADP8860SHIELD-EVALZ or the ADP8861SHIELD-
EVALZ. The series resistance of each of the keypad backlight
LEDs can be configured via the P15 to P34 headers
For the ADP8860SHIELD-EVALZ, light intensity sensing is
implemented by using two ambient light photosensors, connect
one sensor directly to Pin 18 of the ADP8860 and the other
sensor through the P5 header. Sensing through P5 disables one
of the display backlight LEDs connected to Pin 1 of the header.
To ensure proper operation, use the following sequence to
power up the ADP8860SHIELD-EVALZ or the
ADP8861SHIELD-EVALZ:
1.
Connect the ADP8860SHIELD-EVALZ or the
ADP8861SHIELD-EVALZ to the EV-COG-AD3029LZ
via the
2.
Connect the EV-COG-AD3029LZ to the PC via the micro
USB to USB cable.
