Fujitsu F2MCTM-16LX Hardware Manual page 157

Notes:
• Switching to a low-power consumption mode is performed by writing the low-power consumption mode
control register (LPMCR). Only the instructions listed in Table 8.3-2 should be used for this purpose. If
other instructions are used for switching to a low-power consumption mode, operation cannot be assured.
• The standby mode transition instruction in Table 8.3-2 must always be followed by an array of instructions
highlighted by a line below.
MOV LPMCR, #H' xx
NOP
NOP
JMP $+3
MOV A, #H' 10
The devices does not guarantee its operation after returning from the standby mode if you place an array of
instructions other than the one enclosed in the dotted line.
• To access the low-power consumption mode control register (LPMCR) with C language, refer to "
on Accessing the Low-Power Consumption Mode Control Register (LPMCR) to Enter the Standby Mode"
in "8.8 Usage Notes on Low-Power Consumption Mode".
• When word-length is used for writing the low-power consumption mode control register (LPMCR), even
addresses must be used. Using odd addresses to switch to a low-power consumption mode may result in a
malfunction.
• To set a pin to high impedance when the pin is shared by a peripheral function and a port in stop mode,
watch mode or timebase timer mode, disable the output of peripheral functions, and set the STP bit of the
LPMCR register to 1 or set the TMD bit of the LPMCR register to 0.
Table 8.3-2 Instructions to be Used for Switching to a Low-power Consumption Mode
MOV
MOV
MOV
MOVW
MOVW
MOVW
SETB
CLRB
; The low-power consumption mode transition instruction in Table 8.3-2
; jump to next instruction
; any instruction
io,#imm8 MOV
io,A MOV
@Rli+disp8,A
io,#imm16 MOVW
io,A MOVW
@Rli+disp8,A
io:bp SETB
io:bp CLRB
CHAPTER 8 LOW-POWER CONSUMPTION MODE
dir,#imm8 MOV
dir,A MOV
dir,#imm16 MOVW
dir,A MOVW
dir:bp SETB
dir:bp CLRB
eam,#imm8 MOV
addr16,A MOV
eam,#imm16 MOVW eam,RWi
addr16,A MOVW eam,A
addr16:bp
addr16:bp
Notes
eam,Ri
eam,A
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