MB91F528 datasheet(57/241 Pages) SPANSION

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D a t a S h e e t

MB91F528_DS705-00016-1v0-E, March 28, 2014

CONFIDENTIAL

 Low-power consumption mode

To transit to the sleep mode, watch mode, stop mode, watch mode(power-off) or stop mode(power-off),

follow the procedure explained in "Activating the sleep mode, watch mode, or stop mode" or "Activating

the watch mode (power-off) or stop mode(power-off)" of " POWER CONSUMPTION CONTROL" in the

hardware manual.

Take the following notes when using a monitor debugger.

· Do not set a break point for the low-power consumption transition program.

· Do not execute an operation step for the low-power consumption transition program.

 Notes When Writing Data in a Register Having the Status Flag

When writing data in the register that has a status flag (especially, an interrupt request flag) to control

function, taking care not to clear its status flag erroneously must be followed.

The program must be written not to clear the flag to the status bit, and then to set the control bits to have the

desired value.

Especially, if multiple control bits are used, the bit instruction cannot be used. (The bit instruction can

access to a single bit only.) By the Byte, Half-word, or Word access, data is written to the control bits and

status flag simultaneously. During this time, take care not to clear other bits (in this case, the bits of status

flag) erroneously.

Note: These points can be ignored because the bit instructions are already taken the points into consideration.

MB91F528 데이터시트(PDF) 57 Page - SPANSION