YRDKRX62N Datasheet, PDF (14/43 Pages) Renesas Technology Corp – Renesas Demonstration Kit (RDK) for RX62N User’s Manual: Hardware

6.2.Debug LCD Module
A debug LCD module is supplied on the RDK. The debug LCD module uses an SPI interface to reduce the pin allocation. Software contrast
control is also provided. The module supplied with the RDK uses 3.3v. The display is a 96 x 64 graphics display and uses a white LED
backlight. As of hardware revision 6, a backlight control has been added to the design. The backlight is on by default and can be toggled
OFF by setting P21 low. The backlight brightness can be also controlled by using MTU pin TIOCIB. Note there is a footprint, LCD1, for a 2
x 8 character display. This display is not populated – but can be used in a standard 4 bit nibble configuration if desired.
Table 6-2 shows the pin allocation and signal names used for the graphics LCD connector.
Pin
Circuit Net Name
1 +5V Backlight Positive Anode
3 GND
5 GND
7 RSTOUT# (Inverted RESET_IO Pin 49)
9 +3.3V
11 SCK
13 MOSI
15 +3.3V
17 +3.3V
19 GND
J11
Device Pin
Pin
-
2 GND
-
4 GND
-
6 LCD-CS
49 inv 8 LCD-RS
-
10 +3.3V
47
12 MOSI
46
14 MOSI
-
16 +3.3V
-
18 +3.3V
-
20 +3.3V
Circuit Net Name
Device
Pin
-
-
50
43
-
46
46
-
-
-
Table 6-2: Debug LCD Module Connections
6.3. LEDs
There are 17 LEDs on the RDK board. The green ‘POWER’ LED (LED3) lights when the board is powered. The Segger J-Link Lite Debugger
Interface has an LED (LED16) that illuminates when the Debugger USB Interface is connected to a host PC. There are12 user LEDs (see table
6-3) that are connected to IO ports and will light when their corresponding port pin is set low. The 12 user LEDs are arranged to show the
winding phases of a motor control circuit. The remaining 2 LED’s (LED2 and LED1) are Ethernet specific, and are not accessed directly from
the MCU.
10