Atmel SAM4S Series, Предварительный информационный лист

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11100B–ATARM–31-Jul-12
SAM4S Series [Preliminary]
40.5.3 Analog Inputs
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.
40.5.4 Temperature Sensor
The temperature sensor is internally connected to channel 15 of the ADC.
The temperature sensor provides an output voltage V
T
that is proportional to the absolute tem-
perature (PTAT). To activate the temperature sensor, TSON bit (ADC_ACR) needs to be set.
After being set, the startup time of the temperature sensor must be achieved prior to initiating
any measure.
40.5.5 I/O Lines
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.
40.5.6 Timer Triggers
Timer Counters may or may not be used as hardware triggers depending on user requirements.
Thus, some or all of the timer counters may be unconnected.
40.5.7 PWM Event Line
PWM Event Lines may or may not be used as hardware triggers depending on user
requirements.
Table 40-3. I/O Lines
Instance Signal I/O Line Peripheral
ADC ADTRG PA8 B
ADC AD0 PA17 X1
ADC AD1 PA18 X1
ADC AD2/WKUP9 PA19 X1
ADC AD3/WKUP10 PA20 X1
ADC AD4/RTCOUT0 PB0 X1
ADC AD5/RTCOUT1 PB1 X1
ADC AD6/WKUP12 PB2 X1
ADC AD7 PB3 X1
ADC AD8 PA21 X1
ADC AD9 PA22 X1
ADC AD10 PC13 X1
ADC AD11 PC15 X1
ADC AD12 PC12 X1
ADC AD13 PC29 X1
ADC AD14 PC30 X1