SAM4S 查看數據表（PDF） - Atmel Corporation

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SAM4S

AT91SAM ARM-based Flash MCU

Atmel Corporation 

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

sm_out

SMEN

rtc_alarm

RTCEN

WKUP0

WKUP1

WKUP15

rtt_alarm

RTTEN

WKUPT0

Falling/Rising

Edge

Detector

WKUPT1

WKUPEN0 WKUPIS0

WKUPEN1 WKUPIS1

Falling/Rising

Edge

Detector

WKUPT15

Falling/Rising

Edge

Detector

WKUPEN15 WKUPIS15

SLCK

WKUPDBC

Debouncer

WKUPS

Core

Supply

Restart

24 SAM4S Series [Preliminary]

11100BS–ATARM–31-Jul-12

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