ATSAM3U ATMEL [ATMEL Corporation], ATSAM3U Datasheet - Page 5

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ATSAM3U

Manufacturer Part Number
ATSAM3U
Description
AT91 ARM Thumb-based Microcontrollers
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet

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1.2.8
1.2.8.1
1.2.8.2
1.2.9
1.2.9.1
6483A–ATARM–04-Aug-09
Backup Mode
Wait Mode
Backup mode: VDDUTMI current consumption in Backup mode
Backup mode: the PIO states are not kept
Wait mode: VDDCORE current consumption
Use NCS1 available on PC12 (Peripheral A) or use a another chip select or drive the chip select
by software.
This issue will be fixed in the next revision.
In Backup mode, the current consumption measured on VDDUMTI can be around 500 µA
instead of less than 0.1 µA.
Disable externally the voltage on VDDUTMI in Backup mode.
This issue will be fixed in the next revision.
When entering in Backup mode with WFE command, the PIO states are not kept. All the PIOs
go into input with pull-up state in Backup mode.
.Instead of using the WFE command to go into Backup mode, set the VROFF bit (SUPC_CR).
This issue will be fixed in the next revision.
Some parts may show a higher current consumption than expected (50 µA instead of 5 µA) on
VDDCORE.
None.
This issue will be fixed in the next revision.
Problem Fix
Workaround
Problem Fix
Workaround
Problem Fix
Workaround
Problem Fix
ATSAM3U Errata
5

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