SAM3X8C

Manufacturer Part NumberSAM3X8C
ManufacturerAtmel Corporation
SAM3X8C datasheets

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3. Signal Description
Table 3-1
Table 3-1.
Signal Description List
Signal Name
Function
VDDIO
Peripherals I/O Lines Power Supply
VDDUTMI
USB UTMI+ Interface Power Supply
VDDOUT
Voltage Regulator Output
Voltage Regulator, ADC and DAC Power
VDDIN
Supply
GNDUTMI
USB UTMI+ Interface Ground
VDDBU
Backup I/O Lines Power Supply
GNDBU
Backup Ground
VDDPLL
PLL A, UPLL and Oscillator Power Supply
GNDPLL
PLL A, UPLL and Oscillator Ground
VDDANA
ADC and DAC Analog Power Supply
GNDANA
ADC and DAC Analog Ground
VDDCORE
Core Chip Power Supply
GND
Ground
XIN
Main Oscillator Input
XOUT
Main Oscillator Output
XIN32
Slow Clock Oscillator Input
XOUT32
Slow Clock Oscillator Output
VBG
Bias Voltage Reference
PCK0 - PCK2
Programmable Clock Output
SHDN
Shut-Down Control
FWUP
Force Wake-up Input
11057AS–ATARM–10-Feb-12
11057AS–ATARM–10-Feb-12
gives details on the signal names classified by peripheral.
Type
Power Supplies
Power
Power
Power
Power
Ground
Power
Ground
Power
Ground
Power
Ground
Power
Ground
Clocks, Oscillators and PLLs
Input
Output
Input
Output
Analog
Output
Shutdown, Wakeup Logic
Output
Input
SAM3X/A
SAM3X/A
Active
Voltage
Level
Reference
Comments
1.62V to 3.6V
3.0V to 3.6V
1.62V to 3.6V
1.62 V to 1.95V
2.0V to 3.6V
1.62V to 1.95V
VDDPLL
VDDBU
0: The device is in
backup mode
VDDBU
1: The device is
running (not in
backup mode)
Needs external Pull-
VDDBU
up
9
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