AT91SAM9G45(2009) Просмотр технического описания (PDF) - Atmel Corporation

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Компоненты Описание

производитель

AT91SAM9G45
(Rev.:2009)

AT91 ARM Thumb-based Microcontrollers

Atmel Corporation 

5. Power Considerations

5.1 Power Supplies

The AT91SAM9G45 has several types of power supply pins:

• VDDCORE pins: Power the core, including the processor, the embedded memories and the

peripherals; voltage ranges from 0.9V to 1.1V, 1.0V nominal.

• VDDIOM0 pins: Power the DDR2/LPDDR I/O lines; voltage ranges between 1.65V and 1.95V

(1.8V typical).

• VDDIOM1 pins: Power the External Bus Interface 1 I/O lines; voltage ranges between 1.65V

and 1.95V (1.8V typical) or between 3.0V and 3.6V (3.3V nominal).

• VDDIOP0, VDDIOP1, VDDIOP2 pins: Power the Peripherals I/O lines; voltage ranges from

1.65V to 3.6V.

• VDDBU pin: Powers the Slow Clock oscillator, the internal RC oscillator and a part of the

System Controller; voltage ranges from 1.8V to 3.6V.

• VDDPLLUTMI Powers the PLLUTMI cell; voltage range from 0.9V to 1.1V.

• VDDUTMIC pin: Powers the USB device and host UTMI+ core; voltage range from 0.9V to

1.1V, 1.0V nominal.

• VDDUTMII pin: Powers the USB device and host UTMI+ interface; voltage range from 3.0V to

3.6V, 3.3V nominal.

• VDDPLLA pin: Powers the PLLA cell; voltage ranges from 0.9V to 1.1V.

• VDDOSC pin: Powers the Main Oscillator cells; voltage ranges from 1.65V to 3.6V

• VDDANA pin: Powers the Analog to Digital Converter; voltage ranges from 3.0V to 3.6V, 3.3V

nominal.

Ground pins GND are common to VDDIOM0, VDDIOM1, VDDIOP0, VDDIOP1 and VDDIOP2

power supplies. Separated ground pins are provided for VDDUTMIC, VDDUTMII, VDDBU,

VDDOSC, VDDPLLA, VDDPLLUTMI and VDDANA. These ground pins are respectively

GNDUTMIC, GNDUTMII, GNDBU, GNDOSC, GNDPLLA, GNDPLLUTMI and GNDANA.

14 AT91SAM9G45

6438D–ATARM–13-Oct-09

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