Fujitsu F2MC-16LX Hardware Manual page 172

CHAPTER 6 LOW-POWER CONSUMPTION MODE
(3) Define the standby mode transition instruction between #pragma asm and #pragma endasm
and insert two NOP and JMP instructions after that instruction.
Example: Transition to stop mode
156
#pragma asm
MOV I: _IO_LPMCR,#H'98
NOP
NOP
JMP $+3
#pragma endasm
/* Set LPMCR STP bit to 1 */
/* Jump to next instruction */