AT90PWM2B-16SU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT90PWM2B-16SU

8-bit Atmel Microcontroller with 8K Bytes In-System Programmable Flash

Atmel Corporation 

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

PSC0/1/2

General I/O

Modules

ADC

CPU Core

RAM

Flash and

EEPROM

CLKPLL

PLL

clkI/O

clkADC

AVR Clock

Control Unit

clkCPU

clkFLASH

Reset Logic

Watchdog Timer

Source Clock

Clock

Multiplexer

Watchdog Clock

Watchdog

Oscillator

External Clock

(Crystal

Oscillator)

Calibrated RC

Oscillator

29

4317K–AVR–03/2013

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