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Ligne 125 :
Ligne 125 : − x Current Source (mA) Current Sink (mA)+ − + − + − + − + + + + + + + + + + + + + + + + + + + + + + + + + + + +
→Propriété des broches en Output
The I/O expander’s pins, when configured as OUTPUT, can source (provide positive current) up to 10 mA (milliamps) and can sink (provide negative current) up to 25 mA of current to other devices/circuits. The individual per pin current sourcing capability of 10 mA is subject to an overall limit of 80 mA combined between all OUTPUT pins. The per pin capability current sinking capability is subject to an overall limit of 200 mA. The following table provides a breakdown of the overall OUTPUT capabilities of the pins.
The I/O expander’s pins, when configured as OUTPUT, can source (provide positive current) up to 10 mA (milliamps) and can sink (provide negative current) up to 25 mA of current to other devices/circuits. The individual per pin current sourcing capability of 10 mA is subject to an overall limit of 80 mA combined between all OUTPUT pins. The per pin capability current sinking capability is subject to an overall limit of 200 mA. The following table provides a breakdown of the overall OUTPUT capabilities of the pins.
{| class="wikitable" border="1"
Per Pin Capability 10 25
|-
Digital Pins 3,5,9,10,12, 13 Combined 40 100
| align="center" | Caractéristique
Digital Pins 0,1,2,4,6,7,8,11 and Analog Pins A0,A1,A2,A3,A4, A5 Combined 40 100
| align="center" | Current Source
Digital Pins 0-13 and Analog Pins A0-A5 Combined 80 200
| align="center" | Current Sink
|- style="font-size: 90%"
| align="left" | Per Pin Capability
| align="left" | 10
| align="left" | 25
|- style="font-size: 90%"
| align="left" | Digital Pins 3,5,9,10,12, 13 Combinées
| align="left" | 40
| align="left" | 100
|- style="font-size: 90%"
| align="left" | Digital Pins 0,1,2,4,6,7,8,11 and Analog Pins A0,A1,A2,A3,A4,A5 combinée
| align="left" | 40
| align="left" | 100
|- style="font-size: 90%"
| align="left" | Digital Pins 0-13 and Analog Pins A0-A5 Combined
| align="left" | 80
| align="left" | 200
|}
== Cavalier de configuration Galileo ==
There are three jumpers on Galileo that are used to vary the configuration of the board. IOREF Jumper To allow Galileo support both 3.3V and 5V shields, the external operating voltage is controlled via a jumper. When the jumper is connected to 5V, Galileo is configured to be compatible with 5V shields and IOREF is set to 5V. When the jumper is connected 3.3V, Galileo is configured to be compatible with 3.3V shields and IOREF is set to 3.3V. The input range of the Analog pins is also controlled by the IOREF jumper and must not exceed the chosen operating voltage. However, the resolution of [http://arduino.cc/en/Reference/AnalogRead AnalogRead()] (''Arduino.cc, anglais'') remains at 5 V/1024 units for the default 10-bit resolution or, 0.0049V (4.9mV) per unit regardless of IOREF jumper setting.
'''Warning''': The IOREF jumper should be used to match the board and shield operating voltages. Incorrectly setting the voltage could damage the board or the shield. '''I2C Address Jumper''' To prevent a clash between the I2C Slave address of the on board I/O expander and EEPROM with any external I2C Slave devices, jumper J2 can be used to vary the I2C address of the on-board devices. With J2 connected to pin 1 (marked with white triangle), the 7-bit I/O Expander address is 0100001 and the 7-bit EEPROM address is 1010001. Changing the jumper position changes the I/O Expander address to 0100000 and the EEPROM address to 1010000. '''VIN Jumper''' On Galileo, the VIN pin can be used to supply 5V from the regulated power supply connected at the power jack to attached shields or devices. If there is a need to supply more than 5V to a shield using VIN then the VIN jumper should be removed from Galileo to break the connection between the on-board 5V supply and the VIN connection on the board header.
{{ambox-stop|text=If the VIN jumper is not removed and more than 5V is connected to VIN, it may damage the board or lead to unreliable operation.}}
[[Fichier:Galileo-Guide-00.jpg]]
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{{Galileo-TRAILER}}