SAM4L_14 Datasheet, PDF (54/176 Pages) ATMEL Corporation – Technology for Ultra-low Power Consumption

Figure 6-6. Supply Monitor Schematic
ATSAM4L8/L4/L2
VDDANA
DUAL OUTPUT
TRIMMABLE
VOLTAGE
REGULATOR
POR33
BOD33
BOD18
VDDCORE
POR18
VDDANA
GNDANA
6.4.1
6.4.2
6.4.3
6.4.4
Power-on-Reset on VDDANA
POR33 monitors VDDANA. It is always activated and monitors voltage at startup but also during
all the Power Save Mode. If VDDANA goes below the threshold voltage, the entire chip is reset.
Brownout Detector on VDDANA
BOD33 monitors VDDANA. Refer to Section 15. ”Backup System Control Interface (BSCIF)” on
page 308to get more details.
Power-on-Reset on VDDCORE
POR18 monitors the internal VDDCORE. Refer to Section 15. ”Backup System Control Interface
(BSCIF)” on page 308 to get more details.
Brownout Detector on VDDCORE
Once the device is startup, the BOD18 monitors the internal VDDCORE. Refer to Section 15.
”Backup System Control Interface (BSCIF)” on page 308 to get more details.
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