SAM3N0C Atmel Corporation, SAM3N0C Datasheet - Page 651

• Manufacturer Part Number: SAM3N0C
• Manufacturer: Atmel Corporation

33.5
33.5.1
33.5.2
33.5.3
33.5.4
11011A–ATARM–04-Oct-10
11011A–ATARM–04-Oct-10
Product Dependencies
Power Management
Interrupt Sources
Analog Inputs
I/O Lines
The ADC Controller is not continuously clocked. The programmer must first enable the ADC
Controller MCK in the Power Management Controller (PMC) before using the ADC Controller.
However, if the application does not require ADC operations, the ADC Controller clock can be
stopped when not needed and restarted when necessary. Configuring the ADC Controller does
not require the ADC Controller clock to be enabled.
The ADC interrupt line is connected on one of the internal sources of the Interrupt Controller.
Using the ADC interrupt requires the NVIC to be programmed first.
Table 33-2.
The analog input pins can be multiplexed with PIO lines. In this case, the assignment of the ADC
input is automatically done as soon as the corresponding channel is enabled by writing the reg-
ister ADC_CHER. By default, after reset, the PIO line is configured as input with its pull-up
enabled and the ADC input is connected to the GND.
The pin ADTRG may be shared with other peripheral functions through the PIO Controller. In
this case, the PIO Controller should be set accordingly to assign the pin ADTRG to the ADC
function.
Table 33-3.
Instance
Instance
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
ADC
Peripheral IDs
I/O Lines
29
ID
AD3/WKUP10
AD6/WKUP12
AD2/WKUP9
ADTRG
Signal
AD10
AD11
AD12
AD0
AD1
AD4
AD5
AD7
AD8
AD9
I/O Line
PC13
PC15
PC12
PA17
PA18
PA19
PA20
PA21
PA22
PB0
PB1
PB2
PB3
PA8
SAM3N
SAM3N
Peripheral
X1
X1
X1
X1
X1
X1
X1
X1
X1
X1
X1
X1
X1
B
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