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AT90PWM2 Datasheet(PDF) 29 Page - ATMEL Corporation

Part # AT90PWM2
Description  High Performance, Low Power Atmel
PDF  365 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90PWM2 Datasheet(HTML) 29 Page - ATMEL Corporation

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4317K–AVR–03/2013
AT90PWM2/3/2B/3B
7.
System Clock
7.1
Clock Systems and their Distribution
Figure 7-1 presents the principal clock systems in the AVR and their distribution. All of the clocks
need not be active at a given time. In order to reduce power consumption, the clocks to unused
modules can be halted by using different sleep modes, as described in “Power Management and
Sleep Modes” on page 41. The clock systems are detailed below.
Figure 7-1.
Clock Distribution AT90PWM2/3
General I/O
Modules
ADC
CPU Core
RAM
clk
I/O
AVR Clock
Control Unit
clk
CPU
Flash and
EEPROM
clk
FLASH
clk
ADC
Source Clock
Watchdog Timer
Watchdog
Oscillator
Reset Logic
Clock
Multiplexer
Watchdog Clock
Calibrated RC
Oscillator
(Crystal
Oscillator)
External Clock
PSC0/1/2
PLL
CLK
PLL



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