ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 23

• Manufacturer Part Number: ATSAM3S-EK
• Description: KIT EVAL FOR ATSAM3S4C
• Manufacturer: Atmel
• Series: SAM3Sr
• Type: MCUr

Specifications of ATSAM3S-EK

• Contents: Board, Cables, Power Supply
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex-M3
• Kit Contents: Board
• Features: TFT Colour LCD Display, SD/MMC Interface
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• For Use With/related Products: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.7
6500C–ATARM–8-Feb-11
Fast Startup
The SAM3S allows the processor to restart in a few microseconds while the processor is in wait
mode or in sleep mode. A fast start up can occur upon detection of a low level on one of the 19
wake-up inputs (WKUP0 to 15 + SM + RTC + RTT).
The fast restart circuitry, as shown in
up signal to the Power Management Controller. As soon as the fast start-up signal is asserted,
the PMC automatically restarts the embedded 4 MHz Fast RC oscillator, switches the master
clock on this 4MHz clock and reenables the processor clock.
Figure 5-5.
WKUP15
WKUP0
WKUP1
Fast Start-Up Sources
usb_wakeup
Falling/Rising
Falling/Rising
Falling/Rising
rtc_alarm
rtt_alarm
Detector
Detector
Detector
Edge
Edge
Edge
USBEN
RTTEN
RTCEN
Figure
FSTT15
FSTT0
FSTT1
5-5, is fully asynchronous and provides a fast start-
SAM3S Preliminary
fast_restart
23