Atmel Xplained Evaluation Board AT32UC3L0-XPLD AT32UC3L0-XPLD Datenbogen
Produktcode
AT32UC3L0-XPLD
39
32099G–06/2011
AT32UC3L016/32/64
6.1.3.3
3.3V Supply Mode with 1.8V Regulated I/O Lines
In this mode, the internal regulator is connected to the 3.3V source and its output is connected
to both VDDCORE and VDDIO as shown in
to both VDDCORE and VDDIO as shown in
. This configuration is required in order to
use Shutdown mode.
Figure 6-4.
3.3V Supply Mode with 1.8V Regulated I/O Lines
In this mode, some I/O lines are powered by VDDIN while other I/O lines are powered by VDDIO.
Refer to
Refer to
for description of power supply for each I/O line.
Refer to the Power Manager chapter for a description of what parts of the system are powered in
Shutdown mode.
Shutdown mode.
Important note: As the regulator has a maximum output current of 60mA, this mode can only be
used in applications where the maximum I/O current is known and compatible with the core and
peripheral power consumption. Typically, great care must be used to ensure that only a few I/O
lines are toggling at the same time and drive very small loads.
used in applications where the maximum I/O current is known and compatible with the core and
peripheral power consumption. Typically, great care must be used to ensure that only a few I/O
lines are toggling at the same time and drive very small loads.
VDDIO
VDDCORE
Linear
+
-
1.98-3.6V
VDDANA
ADC
VDDIN
GND
GNDANA
CPU,
Peripherals,
Memories,
SCIF, BOD,
RCSYS,
DFLL
OSC32K
RC32K
AST
Wake
POR33
SM33
I/O Pins
I/O Pins