AT91SAM9G46B-CU Просмотр технического описания (PDF) - Atmel Corporation
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AT91SAM9G46B-CU Datasheet PDF : 1277 Pages
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4. Power Considerations
4.1 Power Supplies
The SAM9G46 has several types of power supply pins. Some supply pins share common ground (GND) pins
whereas others have separate grounds. See Table 4-1.
Table 4-1. SAM9G46 Power Supply Pins
Pin(s)
Item(s) powered
VDDCORE
Core, including the processor
Embedded memories
Peripherals
VDDIOM0
DDR2/LPDDR I/O lines
VDDIOM1
External Bus Interface 1 I/O lines
VDDIOP0, VDDIOP1, VDDIOP2
VDDBU
VDDPLLUTMI
VDDPLLA
VDDOSC
VDDUTMIC
VDDUTMII
VDDANA
Peripherals I/O lines
Slow Clock oscillator
Internal RC oscillator
Part of the System Controller
PLLUTMI cell
PLLA cell
Main Oscillator cells
USB device
Host UTMI+ core
USB device
Host UTMI+ interface
Analog-to-Digital Converter
Range
Typical Ground
0.9–1.1 V
1.0V
GNDCORE
1.65–1.95 V
1.65–1.95 V
3.0–3.6 V
1.65–1.95 V
3.0–3.6 V
1.8V
1.8V
3.3V
1.8V
3.3V
GNDIOM
GNDIOP
1.8–3.6 V
–
GNDBU
0.9–1.1 V
0.9–1.1 V
1.65–3.6 V
0.9–1.1 V
1.0V
1.0V
–
1.0V
3.0–3.6 V
3.0–3.6 V
3.3V
3.3V
GNDOSC
GNDUTMI
GNDANA
4.2 Power Sequence Requirements
The SAM9G46 board design must comply with the guidelines described in Section 4.2.1 “Power-up Sequence”
and Section 4.2.2 “Power-down Sequence” to guarantee reliable operation of the device. Any deviation from these
sequences may lead to unpredictable results.
14 SAM9G46 Series [DATASHEET]
Atmel-11028G-ATARM-SAM9G46-Datasheet_08-Dec-15
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