Datasheet

32099IS–01/2012

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. Figure 6-2 shows the power schematics to be used for 3.3V

single supply mode. All I/O lines will be powered by the same power (VDDIN=VDDIO).

Figure 6-2. 3.3V Single Supply Mode

VDDIO

VDDCORE

CPU,

Peripherals,

Memories,

SCIF, BOD,

RCSYS,

DFLL

Linear

regulator

1.98-3.6V

OSC32K

RC32K

AST

Wake

POR33

SM33

VDDANA

ADC

VDDIN GND

GNDANA

I/O Pins