AT91SAM9G46-CU Atmel, AT91SAM9G46-CU Datasheet - Page 35

• Manufacturer Part Number: AT91SAM9G46-CU
• Description: IC ARM9 MCU 324TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9G46-CU

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 160
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

8.7
11028CS–ATARM–8-Apr-11
Power Management Controller
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:
• Switch from 32768 Hz oscillator to internal RC oscillator by setting the bit OSCSEL to 0.
• Wait 5 slow clock cycles for internal resynchronization.
• Disable the 32768Hz oscillator by setting the bit OSC32EN to 0.
• 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).
SAM9G46
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