Hardware layout and configuration UM1855
50/100 DocID027351 Rev 3
2.27.1 Limitations
The following limitations apply for the smartcard operation:
• Smartcard operation is mutually exclusive with LCD glass module, Quad-SPI Flash
memory device and motor control operation.
• SWP operation is mutually exclusive with LCD glass module, touch-sensing button,
motor control and USB OTG FS port operation, if the last operates as USB host. SWP
can operate concurrently with USB OTG FS port acting as USB device.
2.27.2 Operating voltage
Smartcard operating ranging from V
DD
= 2.7 V to V
DD
= 3.6 V. However, the SWP only
operates with the supply voltage of 3.3 V.
2.28 Near-field communication (NFC)
The STM32L476G-EVAL board can host an NFC transceiver board plugged in CN13
extension connector.
Figure 12 illustrates the way of attaching an NFC board.
Figure 12. NFC board plugged into STM32L476G-EVAL board
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