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Data field
Data type
Example content
Minimum Voltage [mV]
uint16_t
3000
Maximum Voltage [mV]
uint16_t
3600
Maximum Current [mA]
uint16_t
30
3.3.
Power Sources
The SAME70-XPLD kit can be powered by several power sources listed in the table below.
Warning:
The 3.3V power domain is locally generated and must never be supplied from
external sources or this would damage the on-board regulators.
Table 3-2 SAME70-XPLD Power Sources
Power input
Voltage requirements
Connector marking
Embedded debugger USB
4.4V to 5.25V (USB spec.)
DEBUG USB
Target USB
4.4V to 5.25V (USB spec.)
TARGET USB
Arduino connector
5.0V typically
J501 (pin 5)
In case of USB power sources, the board automatically detects and switches to the available one. If the
two are present (which is no problem whatsoever) the following priority applies:
1.
Target USB (J302 connector)
2.
Embedded Debugger USB (J900 connector)
Info:
USB sources supposedly provide a maximum current of 500mA. Calculate the power
budget of your system, there is a possiblity this could be not enough if your SAME70-XPLD also
connects to power demanding extension boards.
The optional 5Vcc power source from the Arduino connector J501 is connected in parallel to the USB
power switching system, hence the following warning:
Warning:
do not power the board form the Arduino shield (J501) when either of the two USB
sources are connected. Doing so could damage the board and potentially also damage the USB
port of your PC.
3.4.
Xplained Pro Standard Extension Header
All Xplained Pro kits have one or more dual row, 20-pin, 100mil extension header. Xplained Pro MCU
boards have male headers, while Xplained Pro extensions have their female counterparts. Note that all
pins are not always connected. All connected pins follow the defined pin-out description in the table
below.
Atmel SAME70-XPLD [USER GUIDE]
Atmel-44050A-SAME70-XPLD_User Guide-12/2015
8
Содержание SAME70-XPLD
Страница 53: ...Figure 6 3 Top Signals Layer Atmel SAME70 XPLD USER GUIDE Atmel 44050A SAME70 XPLD_User Guide 12 2015 53 ...
Страница 54: ...Figure 6 4 Layer 2 Ground Atmel SAME70 XPLD USER GUIDE Atmel 44050A SAME70 XPLD_User Guide 12 2015 54 ...
Страница 55: ...Figure 6 5 Layer 3 Power Planes Atmel SAME70 XPLD USER GUIDE Atmel 44050A SAME70 XPLD_User Guide 12 2015 55 ...
Страница 56: ...Figure 6 6 Bottom Signals Layer Atmel SAME70 XPLD USER GUIDE Atmel 44050A SAME70 XPLD_User Guide 12 2015 56 ...