Spansion FM4 - nmschulte/rusefi GitHub Wiki

FM4 32-bit Arm Cortex-M4 Microcontroller (MCU) Families

SK-FM4-U120-9B560-MEM FM4 MCU Evaluation Board

CN3: JTAG CMSIS-DAP Debug Access Port

UART programming:

broken link

OpenOCD FM4 - Japanese