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LPC3250 Sleep Mode

Sachin Mandsaurwale

Hi,

I have to implement sleep mode in LPC3250, i have done a study in the datasheet and found that the mode supporting sleep is STOP mode in LPC3250.

The challenge i am facing is, since my code is running on external ram and to go in STOP mode i have to go via Direct Run Mode and in Direct Run Mode i cannot access the external RAM, that's why my system is restarting.

one possible solution i thought is to put the specific code related to sleep on internal RAM (IRAM) of LPC3250.

Please suggest the possible solutions.

can i make transitions like
EXTERNAL RAM -> INTERNAL RAM (IRAM) -> EXTERNAL RAM (AFTER WAKE UP).

Thanks in advance...