sam3s16 ATMEL Corporation, sam3s16 Datasheet - Page 16

• Manufacturer Part Number: sam3s16
• Description: At91sam Arm-based Flash Mcu
• Manufacturer: ATMEL Corporation

5.7
16
Fast Startup
SAM3S16 Preliminary
The device allows the processor to restart in a few microseconds while the processor is in wait
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 4/8/12 MHz fast RC oscillator, switches the mas-
ter clock on this 4MHz clock and reenables the processor clock.
Figure 5-5.
WKUP15
WKUP0
WKUP1
Fast Start-Up Circuitry
RTT Alarm
RTC Alarm
USB Alarm
FSTP0
FSTP1
FSTP15
FSTT0
FSTT1
FSTT15
RTTAL
RTCAL
USBAL
Figure
5-5, is fully asynchronous and provides a fast start-
11117AS–ATARM–12-Jul-11
fast_restart