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AT91SAM датащи(PDF) 29 Page - ATMEL Corporation

номер детали AT91SAM
подробное описание детали  High-performance 32-bit RISC Architecture
PDF  50 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT91SAM датащи(HTML) 29 Page - ATMEL Corporation

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29
SAM7S Series [DATASHEET]
6175KS–ATARM–25-Oct-12
9.2
Clock Generator
The Clock Generator embeds one low-power RC Oscillator, one Main Oscillator and one PLL with the following
characteristics:
RC Oscillator ranges between 22 kHz and 42 kHz
Main Oscillator frequency ranges between 3 and 20 MHz
Main Oscillator can be bypassed
PLL output ranges between 80 and 220 MHz
It provides SLCK, MAINCK and PLLCK.
Figure 9-3. Clock Generator Block Diagram
9.3
Power Management Controller
The Power Management Controller uses the Clock Generator outputs to provide:
the Processor Clock PCK
the Master Clock MCK
the USB Clock UDPCK (not present on SAM7S32/16)
all the peripheral clocks, independently controllable
three 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.
Embedded
RC
Oscillator
Main
Oscillator
PLL and
Divider
Clock Generator
Power
Management
Controller
XIN
XOUT
PLLRC
Slow Clock
SLCK
Main Clock
MAINCK
PLL Clock
PLLCK
Control
Status



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