the full SD card specification, see
. The connections to the microSD card connector are shown
in the table below.
Table 4-9 microSD Connector Connections
Pin on EXT
connector
Pin name
microSD
card
connector
pin
Comment
-
D2
1
Data line 2 on microSD card
15
D3
2
Data line 3 on microSD card. Active low chip select pin for
microSD card, pulled high through 100kΩ pullup resistor.
16
CMD
3
Command line for microSD card. Connected to SPI_MOSI.
VCC
VDD
4
18
CLK
5
Clock line on microSD card. Connected to SPI_SCK.
GND
GND
6
17
D0
7
Data line 0 on microSD card. Connected to SPI_MISO.
-
D1
8
Data line 1 on microSD card
10
SW_A
9
When a microSD card is put into the connector, SW_A and
SW_B are short-circuited. SW_A is connected to the
microSD_DETECT signal. To use this as a card indicator
remember to enable internal pullup in the target device.
GND
SW_B
10
4.3.5.
Light Sensor
I/O1 Xplained Pro features a
light sensor from Vishay. The sensor data can be read by an
ADC pin on n Xplained Pro MCU board.
Table 4-10 Light Sensor Connections
Pin on EXT connector
Function
3
Light sensor signal
Atmel I/O1 Xplained Pro [USER GUIDE]
Atmel-42078B-IO1-Xplained-Pro_User Guide-10/2015
11
