Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Fiche De Données
Codes de produits
ATSAMD21-XPRO
18
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
7.
Power Supply and Start-Up Considerations
7.1
Power Domain Overview
7.2
Power Supply Considerations
7.2.1
Power Supplies
The Atmel
®
SAM D21 has several different power supply pins:
z
VDDIO: Powers I/O lines, OSC8M and XOSC. Voltage is 1.62V to 3.63V.
z
VDDIN: Powers I/O lines and the internal regulator. Voltage is 1.62V to 3.63V.
z
VDDANA: Powers I/O lines and the ADC, AC, DAC, PTC, OSCULP32K, OSC32K, XOSC32K. Voltage is 1.62V to
3.63V.
3.63V.
z
VDDCORE: Internal regulated voltage output. Powers the core, memories, peripherals, DFLL48M and
FDPLL96M. Voltage is 1.2V.
FDPLL96M. Voltage is 1.2V.
The same voltage must be applied to both VDDIN, VDDIO and VDDANA. This common voltage is referred to as V
DD
in
the datasheet.
VOLTAGE
REGULATOR
VDDIN
VDDCORE
GND
ADC
AC
DAC
PTC
XOSC32K
OSC32K
VDDANA
GNDANA
PA[7:2]
PB[9:0]
PA[1:0]
Digital Logic
(CPU, peripherals)
DFLL48M
VDDIO
OSC8M
XOSC
OSCULP32K
PA[31:16]
PB[31:10]
PA[15:14]
BOD33
POR
PA[13:8]
BOD12
FDPLL96M