
325
SAM4CP [DATASHEET]
43051E–ATPL–08/14
20.
Supply Controller (SUPC)
20.1
Description
The Supply Controller (SUPC) controls the supply voltages of the system and manages the backup low-power mode. In
this mode, current consumption is reduced to less than 1 microamp (typ) for backup power retention. Exit from this mode
is possible on multiple wake-up sources. The SUPC also generates the slow clock by selecting either the low-power RC
oscillator or the low-power crystal oscillator.
20.2
Embedded Characteristics
Manages VDDCORE and the Backup Low-Power Mode by Controlling the Embedded Voltage Regulator.
Manages the LCD Power Supply VDDLCD and the Backup Low-Power Mode by Controlling the Embedded LCD
Voltage Regulator.
A Supply Monitor Detection on VDDIO or a Brownout Detection on VDDCORE Triggers a System Reset.
A Supply Monitor Detection on VDDBU_SW Triggers a System Reset.
Generates the Slow Clock SLCK, by Selecting Either the 32 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.
Up to 16 Wake-up Inputs (including Tamper Inputs), with Programmable Debouncing.
Real-Time Clock Alarm.
Real-Time Timer Alarm.
Supply Monitor Detection on VDDIO, with Programmable Scan Period and Voltage Threshold.