Datasheet

Add-on modules
FRDM-K64F Freedom Module User’s Guide, User's Guide, Rev. 1, 08/2016
NXP Semiconductors 15
13. Push Button Switches
Two push buttons, SW2 and SW3, are available on FRDM-K64F board, where SW2 is connected to
PTC6 and SW3 is connected to PTA4. Besides the general purpose input/output functions, SW2 and
SW3 can be low-power wake up signal. Also, only SW3 can be a non-maskable interrupt.
Table 7. Push button GPIO function
Switch
GPIO Function
SW2
PTC6/SPI0_SOUT/PD0_EXTRG/I2S0_RX_BCLK/FB_AD9/I2S0_MCLK/LLWU_P10
SW3
PTA4/FTM0_CH1/NMI_b/LLWU_P3
14. Debug
The debug interface on MK64FN1M0VLL12 MCU is a Serial Wire Debug (SWD) port with trace output
capability. There are two debug interfaces on the FRDM-K64F: onboard OpenSDAv2 circuit (J26) and K64
direct SWD connection (J9).
NOTE
To use an external debugger, such as J-Link, you may need to disconnect
the OpenSDA SWD from the K64. To do this on the FRDM-K64F board,
cut the shorting trace which connects the pins of jumper holes on
connectors J8 and J12.
15. Add-on modules
15.1. RF module
The Add-on 2.4GHz interface on FRDM-K64F board is using SPI to interface with nRF24L01+ Nordic
2.4G Radio module. Alternatively, any SPI based device or module could be used with this connector.
Figure 16. Add-on 2.4GHz ISM module