Datasheet

Reset
FRDM-K64F Freedom Module User’s Guide, User's Guide, Rev. 1, 08/2016
14 NXP Semiconductors
Table 6. LED signal connections
LED
K64
RED
PTB22/SPI2_SOUT/FB_AD29/CMP2_OUT
BLUE
PTB21/SPI2_SCK/FB_AD30/CMP1_OUT
GREEN
PTE26/ENET_1588_CLKIN/UART4_CTS_b/RTC_CLKOUT/USB0_CLKIN
Figure 14. Tricolor LED
11. Serial Port
The primary serial port interface signals are PTB16 UART1_RX and PTB17 UART1_TX. These signals are
connected to the OpenSDAv2 circuit.
12. Reset
The RESET signal on the K20 is connected externally to a pushbutton, named SW1, and also to the
OpenSDAv2 circuit. The reset button can be used to force an external reset event on the target MCU. The
reset button can also be used to force the OpenSDAv2 circuit into boot loader mode. For more details, see
Serial and debug adapter (OpenSDAv2).
Figure 15. Reset circuit