Datasheet

255
11011B–ATARM–21-Feb-12
SAM3N
255
11011B–ATARM–21-Feb-12
SAM3N
16. Supply Controller (SUPC)
16.1 Description
The Supply Controller (SUPC) controls the supply voltage of the Core of the system and man-
ages the Backup Low Power Mode. In this mode, the current consumption is reduced to a few
microamps for Backup power retention. Exit from this mode is possible on multiple wake-up
sources including events on WKUP pins, or a Clock alarm. The SUPC also generates the Slow
Clock by selecting either the Low Power RC oscillator or the Low Power Crystal oscillator.
16.2 Embedded Characteristics
• Manages the Core Power Supply VDDCORE and the Backup Low Power Mode by
Controlling the Embedded Voltage Regulator
• Generates the Slow Clock SLCK, by Selecting Either the 22-42 kHz Low Power RC Oscillator
or the 32 kHz Low Power Crystal Oscillator
• Supports Multiple Wake Up Sources, for Exit from Backup Low Power Mode
– Force Wake Up Pin, with Programmable Debouncing
– 16 Wake Up Inputs, with Programmable Debouncing
– Real Time Clock Alarm
– Real Time Timer Alarm
– Supply Monitor Detection on VDDIO, with Programmable Scan Period and Voltage
Threshold
• A Supply Monitor Detection on VDDIO or a Brownout Detection on VDDCORE can Trigger a
Core Reset
• Embeds:
– One 22 to 42 kHz Low Power RC Oscillator
– One 32 kHz Low Power Crystal Oscillator
– One Zero-Power Power-On Reset Cell
– One Software Programmable Supply Monitor, on VDDIO Located in Backup Section
– One Brownout Detector on VDDCORE Located in the Core