Chapter 6. User Circuitry; Switches; Leds; Potentiometer - Renesas R8C/Tiny Series User Manual

6.1. Switches

There are four switches located on the board. The function of each switch and its connection are shown in Table 6-1.
Switch
RES
SW1/BOOT*
SW2*
SW3*
*Refer to schematic for detailed connectivity information.

6.2. LEDs

There are six LEDs on the CPU board. The green 'POWER' LED lights when the board is powered. The orange BOOT LED indicates the
device is in BOOT mode when lit. The four user LEDs are connected to an IO port and will light when their corresponding port pin is set low.
Table 6-2, below, shows the LED pin references and their corresponding microcontroller port pin connections.
LED Reference
(As shown on silkscreen)
LED0
LED1
LED2
LED3

6.3. Potentiometer

A single turn potentiometer is connected to AN8 (P1.0) of the microcontroller. This may be used to vary the input analog voltage value to
this pin between VREF and Ground.

Chapter 6. User Circuitry

When pressed, the board microcontroller is reset.
Connects to an IRQ input for user controls.
The switch is also used in conjunction with the RES switch to place
the device in BOOT mode when not using the E8A debugger.
Connects to an IRQ Interrupt input line for user controls.
Connects to a Key In Interrupt input line for user controls
Table 6-1: Switch Functions
Colour
Green
Orange
Red
Red
Function
Microcontroller Port Pin function
Port 6.0
Port 6.1
Port 6.2
Port 3.3
Table 6-2: LED Port
7
Microcontroller
RESETn Pin9
INT0n Pin44
(Port 4, pin 5)
INT1n Pin52
(Port 3, pin 6)
INT2n Pin53
(Port 3, pin 2)
Microcontroller Pin
Number
43
72
71
1