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CHAPTER 3 CPU
• To access the low-power consumption mode control register (LPMCR) with C
language, refer to
Control Register (LPMCR) to Enter the Standby Mode" in the section 3.8.8
"Precautions when Using Low-Power Consumption Mode".
• When writing in words in a low power consumption mode, write data to even
addresses.Writing to an odd address may cause a malfunction.
• To set that pin to high impedance which serves as a peripheral resource or as a port in
stop mode, watch mode, or timebase timer mode, disable the output of the peripheral
resource, then set the STP bit of the low power consumption mode control register
(LPMCR) to "1" or set the TMD bit to "0".
This applies to the following pins: P21/TOT0, P23/TOT1
• There is no sub-clock in MB90F897S.
Table 3.8-2 Instructions at Transition to Low-power Consumption Mode
MOV io,#imm8
MOV io,A
MOV @RLi+disp8,A
MOVW io,#imm16
MOVW io,A
MOVW @RLi+disp8,A
SETB io:bp
CLRB io:bp
132
"I Notes on Accessing the Low-Power Consumption Made
MOV dir,#imm8
MOV dir,A
MOVW dir,#imm16
MOVW dir,A
SETB dir:bp
CLRB dir:bp
MOV eam,#imm8
MOV eam,Ri
MOV adde16,A
MOV eam,A
MOVW eam,#imm16
MOVW eam,RWi
MOVW addr16,A
MOVW eam,A
SETB addr16:bp
CLRB addr16:bp
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