37
32099DS–06/2010
AT32UC3L016/32/64
6.1.3.1
3.3V Single Supply Mode
In 3.3V single supply mode the internal regulator is connected to the 3.3V source (VDDIN pin)
and its output feeds VDDCORE.
shows the power schematics to be used for 3.3V sin-
gle supply mode. All I/O lines will be powered by the same power (VDDIN=VDDIO).
Figure 6-2.
3.3V Single Power Supply mode
VDDIO
VDDCORE
CPU,
Peripherals,
Memories,
SCIF, BOD,
RCSYS,
DFLL
Linear
+
-
1.98-3.6V
OSC32K
RC32K
AST
Wake
POR33
SM33
VDDANA
ADC
VDDIN
GND
GNDANA
I/O Pins
I/O Pins