Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Data Sheet
Product codes
ATSAMD20-XPRO
499
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
z
Bits 7:5 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to
zero when this register is written. These bits will always return zero when read.
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to
zero when this register is written. These bits will always return zero when read.
z
Bits 4:0 – MUXPOS[4:0]: Positive Mux Input Selection
These bits define the Mux selection for the positive ADC input.
These bits define the Mux selection for the positive ADC input.
shows the possible input selections. If
the internal bandgap voltage or temperature sensor input channel is selected, then the Sampling Time Length bit
group in the Sampling Control register must be written with a corresponding value.
group in the Sampling Control register must be written with a corresponding value.
0x02
PIN2
ADC AIN2 pin
0x03
PIN3
ADC AIN3 pin
0x04
PIN4
ADC AIN4 pin
0x05
PIN5
ADC AIN5 pin
0x06
PIN6
ADC AIN6 pin
0x07
PIN7
ADC AIN7 pin
0x08-0x17
–
Reserved
0x18
GND
Internal ground
0x19
IOGND
I/O ground
0x1A-0x1F
–
Reserved
Table 28-12. Positive Mux Input Selection
MUXPOS[4:0]
Group configuration
Description
0x00
PIN0
ADC AIN0 pin
0x01
PIN1
ADC AIN1 pin
0x02
PIN2
ADC AIN2 pin
0x03
PIN3
ADC AIN3 pin
0x04
PIN4
ADC AIN4 pin
0x05
PIN5
ADC AIN5 pin
0x06
PIN6
ADC AIN6 pin
0x07
PIN7
ADC AIN7 pin
0x08
PIN8
ADC AIN8 pin
0x09
PIN9
ADC AIN9 pin
0x0A
PIN10
ADC AIN10 pin
0x0B
PIN11
ADC AIN11 pin
0x0C
PIN12
ADC AIN12 pin
0x0D
PIN13
ADC AIN13 pin
Table 28-11. Negative Mux Input Selection (Continued)
Value
Name
Description