SAM4SD16B datasheet(24/67 Pages) ATMEL

24 / 67 page

11100BS–ATARM–31-Jul-12

SAM4S Series [Preliminary]

3. When considering wake-up time, the time required to start the PLL is not taken into account. Once started, the device works

with the 4/8/12 MHz fast RC oscillator. The user has to add the PLL start-up time if it is needed in the system. The wake-up

time is defined as the time taken for wake up until the first instruction is fetched.

4. Total Current consumption, 1 µA typ to 1.8V on VDDIO to 25°C.

5. 20.4 µA on VDDCORE, 32.2 µA for total current consumption

6. In this mode the core is supplied and not clocked but some peripherals can be clocked.

7. Depends on MCK frequency. In this mode, the core is supplied but some peripherals can be clocked.

5.6

Wake-up Sources

The wake-up events allow the device to exit the backup mode. When a wake-up event is

detected, the Supply Controller performs a sequence which automatically reenables the core

power supply and the SRAM power supply, if they are not already enabled.

Figure 5-4.

Wake-up Source

WKUP15

WKUPEN15

WKUPT15

WKUPEN1

WKUPEN0

Debouncer

SLCK

WKUPDBC

WKUPS

RTCEN

rtc_alarm

SMEN

sm_out

Core

Supply

Restart

WKUPIS0

WKUPIS1

WKUPIS15

Falling/Rising

Edge

Detector

WKUPT0

Falling/Rising

Edge

Detector

WKUPT1

Falling/Rising

Edge

Detector

WKUP0

WKUP1

RTTEN

rtt_alarm

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