AT90PWM2B-16SE ATMEL [ATMEL Corporation], AT90PWM2B-16SE Datasheet - Page 28

• Manufacturer Part Number: AT90PWM2B-16SE
• Description: 8-bit Microcontroller with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

7. System Clock
7.1
28
Clock Systems and their Distribution
AT90PWM2/3/2B/3B
Figure 7-1
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
Sleep Modes” on page
Figure 7-1.
presents the principal clock systems in the AVR and their distribution. All of the clocks
PSC0/1/2
Clock Distribution AT90PWM2/3
PLL
CLK
PLL
40. The clock systems are detailed below.
General I/O
Modules
clk
I/O
External Clock
Multiplexer
ADC
Control Unit
AVR Clock
clk
Clock
ADC
Source Clock
Oscillator)
CPU Core
(Crystal
clk
clk
CPU
FLASH
Reset Logic
Watchdog Clock
RAM
Oscillator
Watchdog
Watchdog Timer
“Power Management and
Flash and
EEPROM
Calibrated RC
Oscillator
4317J–AVR–08/10