AT91SAM データシートの表示（PDF） - Atmel Corporation

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AT91SAM

AT91SAM ARM-based Embedded MPU

Atmel Corporation 

5. Power Considerations

5.1 Power Supplies

The SAM9G45 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 typical.

• 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 typical).

• 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 pin: 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 typical.

• VDDUTMII pin: Powers the USB device and host UTMI+ interface; voltage range from 3.0V to 3.6V, 3.3V typical.

• 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 typical.

Some supply pins share common ground (GND) pins whereas others have separate grounds.

The respective power/ground pin assignments are as follows:

VDDCORE

VDDIOM0, VDDIOM1

VDDIOP0, VDDIOP1, VDDIOP2

VDDBU

VDDUTMIC, VDDUTMII

VDDPLLUTMI, VDDPLLA, VDDOSC,

VDDANA

GNDCORE

GNDIOM

GNDIOP

GNDBU

GNDUTMI

GNDOSC

GNDANA

SAM9G45 [DATASHEET] 14

6438K–ATARM–12-Feb-13

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