TWRKL43ZUG Tower Module, User’s Guide, Rev. 1, 08/2014
8
Freescale Semiconductor, Inc.
Hardware description
low-power mode during periods of inactivity. For more information on the FXOS8700CQ, visit the
FXOS8700CQ Product Summary Page at Freescale.com/FXOS8700CQ.
6.10
General Purpose Tower Plug-in (TWRPI) socket
The TWR-KL43Z features a socket (J22 and J14) 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
Table 3
.
Table 3. General Purpose TWRPI socket pinout
J22
J14
Pin
Description
Pin
Description
1
5V VCC
1
GND
2
3.3 V VCC
2
GND
3
GND
3
I
2
C: SCL
4
3.3V 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
18
ADC: TWRPI ID 1
18
GPIO: GPIO3
19
GND
19
GPIO: GPIO4/Timer
20
Reset
20
GPIO: GPIO5/Timer