TWR-K65F180M User's Guide
,
Rev. 0
,
05/2015
Freescale Semiconductor, Inc.
9
3.11 General Purpose Tower Plug-in (TWRPI) socket
The TWR-K65F180M features two sockets (J11 and J12) that can accept a variety of different Tower
Plug-in modules featuring sensors, RF transceivers, and more. The General Purpose TWRPI socket
provides access to I
2
C, SPI, IRQs, GPIOs, timers, analog conversion signals, TWRPI ID signals, reset,
and voltage supplies. The pinout for the TWRPI Socket is defined in the following table.
Table 3.
TWRPI socket pin description
Left-side 2x10 Connector
Right-side 2x10 Connector
Pin
Description
Pin
Description
1
5V VCC
1
GND
2
3.3 V VCC
2
GND
3
GND
3
I
2
C: SCL
4
3.3 V VDDA
4
I
2
C: SDA
5
VSS (Analog GND)
5
GND
6
VSS (Analog GND)
6
GND
7
VSS (Analog GND)
7
GND
8
ADC: Analog 0
8
GND
9
ADC: Analog 1
9
SPI: MISO
10
VSS (Analog GND)
10
SPI: MOSI
11
VSS (Analog GND)
11
SPI: SS
12
ADC: Analog 2
12
SPI: CLK
13
VSS (Analog GND)
13
GND
14
VSS (Analog GND)
14
GND
15
GND
15
GPIO: GPIO0/IRQ
16
GND
16
GPIO: GPIO1/IRQ
17
ADC: TWRPI ID 0
17
GPIO: GPIO2/UART0_RX
18
ADC: TWRPI ID 1
18
GPIO: GPIO3/ UART0_TX
19
GND
19
GPIO: GPIO4/ UART0_CTS
20
Reset
20
GPIO: GPIO5/ UART0_RTS
3.12 Touch interface
The touch-sensing input (TSI) module of the Kinetis microcontrollers provides capacitive touch-sensing
detection with high sensitivity and enhanced robustness. Each TSI pin implements the capacitive
measurement of an electrode. There are two individual electrodes on-board the TWR-K65F180M that
simulates pushbuttons.
