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6.23
Smartcard
The STM32MP157x-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 STM32MP157xAA1.
The smartcard interface is connected for some I/O to the STM32MP157xAA1 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
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 2
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