
19
32117DS–AVR-01/12
AT32UC3C
VDDIN_5
1.8V Voltage Regulator Input
Power
Input
Power Supply:
4.5V to 5.5V
or
3.0V to 3.6 V
VDDIN_33
USB I/O power supply
Power
Output/
Input
Capacitor Connection for the 3.3V
voltage regulator
or power supply:
3.0V to 3.6 V
VDDCORE
1.8V Voltage Regulator Output
Power
output
Capacitor Connection for the 1.8V
voltage regulator
GNDIO1
GNDIO2
GNDIO3
I/O Ground
Ground
GNDANA
Analog Ground
Ground
GNDCORE
Ground of the core
Ground
GNDPLL
Ground of the PLLs
Ground
Analog Comparator Interface - ACIFA0/1
AC0AN1/AC0AN0
Negative inputs for comparator AC0A
Analog
AC0AP1/AC0AP0
Positive inputs for comparator AC0A
Analog
AC0BN1/AC0BN0
Negative inputs for comparator AC0B
Analog
AC0BP1/AC0BP0
Positive inputs for comparator AC0B
Analog
AC1AN1/AC1AN0
Negative inputs for comparator AC1A
Analog
AC1AP1/AC1AP0
Positive inputs for comparator AC1A
Analog
AC1BN1/AC1BN0
Negative inputs for comparator AC1B
Analog
AC1BP1/AC1BP0
Positive inputs for comparator AC1B
Analog
ACAOUT/ACBOUT
analog comparator outputs
output
ADC Interface - ADCIFA
ADCIN[15:0]
ADC input pins
Analog
ADCREF0
Analog positive reference 0 voltage input
Analog
ADCREF1
Analog positive reference 1 voltage input
Analog
ADCVREFP
Analog positive reference connected to external
capacitor
Analog
Table 3-7.
Signal Description List
Signal Name
Function
Type
Active
Level
Comments