TWR-K20D72M User’s Manual
Page 13 of 17
J23
Enable IRQ2 to ACCELEROMETER
ON
Enable IRQ2 to ACCELEROMETER
*OFF* Disable IRQ2 to ACCELEROMETER
J24
Enable IRQ1 to ACCELEROMETER
ON
Enable IRQ1 to ACCELEROMETER
*OFF* Disable IRQ1 to ACCELEROMETER
J25
Enable SCL to ACCELEROMETER
*ON* Enable SCL to ACCELEROMETER
OFF Disable SCL to ACCELEROMETER
J26
Enable SDA to ACCELEROMETER
*ON* Enable SDA to ACCELEROMETER
OFF Disable SDA to ACCELEROMETER
J27
Enable POTENTIOMETER
*ON* Enable POTENTIOMETER to ADC1_DM0
OFF Disable POTENTIOMETER to ADC1_DM0
4
Input/Output Connectors and Pin Usage Table
Table 5 provides details on which K20D72M pins are using to communicate with the TWR-K20D72M
sensors, LEDs, switches, and other I/O interfaces.
Note: Some port pins are used in multiple interfaces on-board and many are potentially connected to
off-board resources via the Primary and Secondary Connectors. Take care to avoid attempted
simultaneous usage of mutually exclusive features.
Table 5.
I/O Connectors and Pin Usage Table
Feature
Connection
Port Pin
Pin Function
Infrared Port
IR Transmit
PTD7
CMT_IRO
IR Receive
PTC7
CMP0_IN1
Pushbuttons
SW1 (IRQ0)
PTC1
PTC1
SW2 (IRQ1)
PTC2
PTC2
SW3 (RESET)
RESET_b RESET_b
Touch Pads
Touch
PTB0
TSI0_CH0
Touch
PTB1
TSI0_CH6
LEDs
D2 / Orange LED
PTC4
RESET_b
D3 / Yellow LED
3.3V
Power on
D4 / YEL/GRN LED
PTD1
OSBDM status
D5 / Yellow LED
PTD0
OSBDM target power
D7/Green LED
PTC7
Green LED
D8/Blue LED
PTC8
Blue LED
D9
PTC9
D9 Electrode LED
D10
PTC10
D10 Electrode LED
Potentiometer
Potentiometer (R42)
-
ADC1_DM0
Microphone
Microphone
-
ADC1_DP0
BUZZER
BUZZER
PTC4
FTM0_CH3
