SAM3SD8B Atmel Corporation, SAM3SD8B Datasheet - Page 36
SAM3SD8B
Manufacturer Part Number
SAM3SD8B
Description
Manufacturer
Atmel Corporation
- Current page: 36 of 56
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10.7
10.8
36
Watchdog Timer
SysTick Timer
SAM3S8/SD8 Summary
Figure 10-3. Power Management Controller Block Diagram
The SysTick calibration value is fixed at 8000, which allows the generation of a time base of 1
ms with SysTick clock at 8 MHz (max HCLK/8 = 64 MHz/8)
• 16-bit key-protected only-once Programmable Counter
• Windowed, prevents the processor to be in a deadlock on the watchdog access
• 24-bit down counter
• Self-reload capability
• Flexible System timer
PLLACK
PLLBCK
MAINCK
SLCK
Master Clock Controller
MAINCK
PLLACK
PLLBCK
PLLBCK
SLCK
/1,/2,/4,...,/64
Prescaler
Programmable Clock Controller
USB Clock Controller
/1,/2,/4,...,/64
Prescaler
Sleep Mode
ON/OFF
Clock Controller
Processor
Controller
ON/OFF
Divider
Clock
Peripherals
ON/OFF
/8
MCK
HCK
int
periph_clk[..]
pck[..]
UDPCK
SystTick
FCLK
11090AS–ATARM–10-Feb-12
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