AT91SAM9260-CU ATMEL [ATMEL Corporation], AT91SAM9260-CU Datasheet - Page 29

• Manufacturer Part Number: AT91SAM9260-CU
• Description: AT91 ARM Thumb Microcontrollers
• Manufacturer: ATMEL [ATMEL Corporation]

9.5
6221IS–ATARM–12-Aug-08
Power Management Controller
Figure 9-2.
• Provides:
• Five flexible operating modes:
– the Processor Clock PCK
– the Master Clock MCK, in particular to the Matrix and the memory interfaces
– the USB Device Clock UDPCK
– independent peripheral clocks, typically at the frequency of MCK
– 2 programmable clock outputs: PCK0, 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,
– Backup Mode, Main Power Supplies off, VDDBU powered by a battery
processor stopped waiting for an interrupt
Clock Generator Block Diagram
OSC_SEL
XOUT32
PLLRCA
XIN32
XOUT
XIN
Clock Generator
Management
Slow Clock
Controller
On Chip
RC OSC
Oscillator
Oscillator
Status
PLL and
Divider A
PLL and
Divider B
Power
Main
Control
Main Clock
MAINCK
PLLA Clock
PLLACK
PLLB Clock
PLLBCK
Slow Clock
SLCK
AT91SAM9260
29