Datasheet

RSKRX210 5. User Circuitry
R20UT0302EG0200 Rev. 2.00 Page 15 of 41
Jul 09, 2012
5.4 LEDs
There are five LEDs on the RSK board. The function of each LED, its colour, and its connections are shown in
Table 5-3.
LED Colour Function MCU Connection
POWER Green Indicates the power status No connection
LED0 Green User operated LED. P14, Pin 32
LED1 Orange User operated LED. P15, Pin 31
LED2 Red User operated LED. P16, Pin 30
LED3 Red User operated LED. P17, Pin 29
Table 5-3: LED Connections
5.5 Potentiometer
A single-turn potentiometer is connected as a potential divider to analogue input AN000, pin 95. The potentiometer
can be used to create a voltage between AVCC and ground (by default, AVCC is connected to the board power
supply Board_VCC).
The potentiometer is fitted to offer an easy method of supplying a variable analogue input to the microcontroller. It does
not necessarily reflect the accuracy of the controller’s ADC. Refer to the device hardware manual for further details.
5.6 Debug LCD Module
A debug LCD module is supplied with the RSK, and should be connected to the LCD header.
Care should be taken when installing the LCD module to ensure pins are not bent or damaged. The LCD module is
vulnerable to electrostatic discharge (ESD); therefore appropriate ESD protection should be used.
The debug LCD module uses a 4-bit interface to reduce pin allocation. No contrast control is provided, as this is set
by a resistor supplied on the display module. Connection information for the debug LCD module is provided in
Table 5-4 below.
Debug LCD Header
Pin
Circuit Net Name
MCU Pin
Pin
Circuit Net Name
MCU Pin
1 Ground - 2 5V -
3
No Connection
-
4
DLCDRS
PJ1, Pin 6
5 R/W (Pulled to ground) - 6 DLCDE (pulled to ground) PJ3, Pin 4
7
No Connection
-
8
No Connection
-
9 No Connection - 10 No Connection -
11
DLCD4
PH0, Pin 38
12
DLCD5
PH1, Pin 37
13 DLCD6 PH2, Pin 36 14 DLCD7 PH3, Pin 35
Table 5-4: LCD Header Connections