AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 300

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

25. Power Management Controller (PMC)
25.1
25.2
300
Description
Embedded Characteristics
AT91SAM9G45
The Power Management Controller (PMC) optimizes power consumption by controlling all sys-
tem and user peripheral clocks. The PMC enables/disables the clock inputs to many of the
peripherals and the ARM Processor.
The Power Management Controller provides all the clock signals to the system.
PMC input clocks:
PMC output clocks
Note:
This allows the software control of five flexible operating modes:
• UPLLCK: From UTMI PLL
• PLLACK From PLLA
• SLCK: slow clock from OSC32K or internal RC OSC
• MAINCK: from 12 MHz external oscillator
• Processor Clock PCK
• Master Clock MCK, in particular to the Matrix and the memory interfaces. The divider can be
• DDR system clock equal to 2xMCK
• USB Host EHCI High speed clock (UPLLCK)
• USB OHCI clocks (UHP48M and UHP12M)
• Independent peripheral clocks, typically at the frequency of MCK
• Two programmable clock outputs: PCK0 and PCK1
• Normal Mode, processor and peripherals running at a programmable frequency
• Idle Mode, processor stopped waiting for an interrupt
• Slow Clock Mode, processor and peripherals running at low frequency
• Standby Mode, mix of Idle and Backup Mode, peripheral running at low frequency, processor
• Backup Mode, Main Power Supplies off, VDDBU powered by a battery
1,2,3 or 4
stopped waiting for an interrupt
DDR system clock is not available when Master Clock (MCK) equals Processor Clock (PCK).
6438F–ATARM–21-Jun-10