6.23 Smartcard
The STM32MP157F-EV1 board supports one smartcard interface. The MB1262/CN23 smartcard connector is
used as card reader
.
6.23.1 Smartcard interface
A 3V3 smartcard interface MB1262/U5 is used between the card reader connector MB1262/CN23 and the
smartcard controller port of STM32MP157F
AA1.
The smartcard interface is connected for some I/O to the STM32MP157FAA1 and for other IO to the MFX I/O
expander.
Table 37. HW configuration for the smartcard interface
I/O Configuration
PZ7 PZ7 is connected to smartcard interface as SMARTCARD_IO
PZ6 PZ6 is connected to smartcard interface as SMARTCARD_CLK
MFX_IO6 MFX_IO6 used as SMARTCARD_3/5V
MFX_IO7 MFX_IO7 used as SMARTCARD_OFF
MFX_IO8 MFX_IO8 used as SMARTCARD_RST
MFX_IO9 MFX_IO9 used as SMARTCARD_CMDVCC
Figure 21. Smartcard connector pinout MB1262
/CN23
Table 38 describes the smartcard interface MB1262/U5 and connector pinout MB1262/CN23.
Table 38. Smartcard interface MB1262/U5 and connector pinout MB1262/CN23
Pin Board function U5 smartcard interface pin
C1 VCC: Card supply U5-17
C2 RST: Card Reset U5-16
C3 CLK: Card CLK U5-15
C4 NC U5-13
C5 GND: CARD GND U5-14
C6 SWIO -
UM2648
Smartcard
UM2648 - Rev 1
page 34/61
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