Flash Memory RM0046
338/936 Doc ID 16912 Rev 5
Power-down mode cannot be entered when Low-power mode is active. The module must
first be set to User mode (or reset) when cycling between Low-power mode and Power-
down mode.
Power-down mode
The Power-down mode allows turning off all Flash DC current sources so that power
dissipation is limited only to leakage in this mode.
In Power-down mode, no reads from or writes to the Flash are possible.
When enabled, the Flash module returns to its previous state in all cases, unless in the
process of executing an erase high voltage operation at the time of entering Power-down
mode. If the Flash module is put into Power-down mode during an erase operation, the
MCR[ESUS] bit is set to 1. The user may resume the erase operation when the Flash
module exits Power-down mode by clearing the MCR[ESUS] bit. MCR[EHV] must be set to
resume the erase operation.
If the Flash module is placed in Power-down mode during a program operation, the
operation will be completed in any case and the Power-down mode is entered only after the
programming is completed.
If the Flash module is put in Power-down mode and the vector table remains mapped in the
Flash address space, the user must observe than the Flash module will require a longer
interrupt response time. This should be accomplished by adding several wait states.
Low-power mode cannot be entered when Power-down mode is active. The module must
first be set to User mode (or reset) when cycling between Low-power mode and Power-
down mode.
To Next Page
Loading...
