Техническая Спецификация для Atmel MCU Evaluation Kit AT91SAM7X-EK AT91SAM7X-EK

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SAM7X Series [SUMMARY DATASHEET]

6120IS–ATARM–14-Nov-13

The Power Management Controller uses the Clock Generator outputs to provide:



the Processor Clock PCK



the Master Clock MCK



the USB Clock UDPCK



all the peripheral clocks, independently controllable



four programmable clock outputs

The Master Clock (MCK) is programmable from a few hundred Hz to the maximum operating frequency of the device.

The Processor Clock (PCK) switches off when entering processor idle mode, thus allowing reduced power consumption 
while waiting for an interrupt.



Controls the interrupt lines (nIRQ and nFIQ) of an ARM Processor



Individually maskable and vectored interrupt sources



Source 0 is reserved for the Fast Interrupt Input (FIQ)



Source 1 is reserved for system peripherals (RTT, PIT, EFC, PMC, DBGU, etc.)



Other sources control the peripheral interrupts or external interrupts



Programmable edge-triggered or level-sensitive internal sources



Programmable positive/negative edge-triggered or high/low level-sensitive external sources



8-level Priority Controller



Drives the normal interrupt nIRQ of the processor



Handles priority of the interrupt sources



Higher priority interrupts can be served during service of lower priority interrupt



Vectoring



Optimizes interrupt service routine branch and execution



One 32-bit vector register per interrupt source



Interrupt vector register reads the corresponding current interrupt vector

MCK

periph cl 2..18

int

UDPCK

SLCK

MAINCK

PLLCK

Prescaler

/1 /2 /4 ... /64

PCK

Processor

Cloc

Controller

Idle Mode

Master Cloc Controller

Peripherals

Cloc Controller

ON/OFF

USB Cloc Controller

ON/OFF

SLCK

MAINCK

PLLCK

Prescaler

/1 /2 /4 ... /64

Programmable Cloc Controller

PLLCK

Di ider
/1 /2 /4

pc 0..3