SAM3X8C Atmel Corporation, SAM3X8C Datasheet - Page 44
SAM3X8C
Manufacturer Part Number
SAM3X8C
Description
Manufacturer
Atmel Corporation
- Current page: 44 of 1465
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9.1
9.2
9.2.1
9.2.2
9.2.3
44
System Controller and Peripherals Mapping
Power-on-Reset, Brownout and Supply Monitor
SAM3X/A
Power-on-Reset on VDDBU
Brownout Detector on VDDCORE
Supply Monitor on VDDUTMI
Please refer to
All the peripherals are in the bit band region and are mapped in the bit band alias region.
The SAM3X/A embeds three features to monitor, warn and/or reset the chip:
The Power-on-Reset monitors VDDBU. It is always activated and monitors voltage at start up
but also during power down. If VDDBU goes below the threshold voltage, the entire chip is reset.
For more information, refer to the “Electrical Characteristics” section of the product datasheet.
The Brownout Detector monitors VDDCORE. It is active by default. It can be deactivated by soft-
ware through the Supply Controller (SUPC_MR). It is especially recommended to disable it
during low-power modes such as wait or sleep modes.
If VDDCORE goes below the threshold voltage, the reset of the core is asserted. For more infor-
mation, refer to the “Supply Controller” and “Electrical Characteristics” sections of the product
datasheet.
The Supply Monitor monitors VDDUTMI. It is not active by default. It can be activated by soft-
ware and is fully programmable with 16 steps for the threshold (between 1.9V to 3.4V). It is
controlled by the Supply Controller (SUPC). A sample mode is possible. It allows to divide the
supply monitor power consumption by a factor of up to 2048. For more information, refer to the
“SUPC” and “Electrical Characteristics” sections of the product datasheet.
• Power-on-Reset on VDDBU
• Brownout Detector on VDDCORE
• Supply Monitor on VDDUTMI
Figure 7-1 on page
35.
11057A–ATARM–17-Feb-12
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