Datasheet

317
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
18. Supply Controller (SUPC)
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 a few microamps 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.
18.1 Embedded Characteristics
 Manages the Core Power Supply VDDCORE and the Backup Low-Power Mode by Controlling the Embedded
Voltage Regulator
 A Supply Monitor Detection on VDDIO or a Brownout Detection on VDDCORE Triggers a Core Reset
 Generates the Slow Clock SLCK by Selecting Either the 22-42 kHz Low-Power RC Oscillator or the 32 kHz Low-
Power Crystal Oscillator
 Low-power Tamper Detection on Two Inputs
 Anti-tampering by Immediate Clear of the General-purpose Backup Registers
 Supports Multiple Wake-up Sources for Exit from Backup Low-power Mode
 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