Hardware layout and configuration
UM1460
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DocID022136 Rev 5
2.10 Smartcard
STMicroelectronics smartcard interface chip ST8024 is used on the STM3241G-EVAL
board for asynchronous 3 V and 5 V smartcards. It performs all supply protection and
control functions based on the connections with the STM32F417IGH6 listed in
Table 9
:
Smartcard shares some I/Os with I2S bus for audio. Some jumper settings need to be
reconfigured to enable Smartcard as indicated below:
2.11 microSD
card
The 1 Gbyte or more microSD card connected to SDIO of the STM32F417IGH6 is available
on the board. microSD card detection is managed by the standard I/O port PH13. The
microSD card shares I/Os with motor control, RS-232 and audio.
The jumpers JP22 and JP16 must be refit and motor control connector (CN5) must be
disconnected for microSD card function.
Table 9. ST8024 and STM32F417IGH6 connections
ST8024 signals
Description
Connect to STM32F417IGH6
5V/3V
Smartcard power supply selection pin
PH15
I/OUC
MCU data I/O line
PC6
XTAL1
Crystal or external clock input
PG7
OFF
Detect presence of a card, MCU interrupt, share
same pin with motor controller.
PF6
RSTIN
Card reset input from MCU
PF7
CMDVCC
Start activation sequence input (Active Low),
share same pin with I2S DAC and motor control.
PG12
Table 10. Smartcard related jumper
Jumper
Description
JP21
To connect Smartcard_IO to PC6, JP21must be fitted.
JP21 must not be fitted for Audio DAC connection to I2S.
Default setting: Not fitted
Table 11. microSD card related jumpers
Jumper
Description
JP22
Description of JP22 is in
Section 2.8: RS-232 and IrDA
JP16
PC9 is connected to MicroSDCard_D1 when JP16 is set as shown to the
right: (Default setting):
PC9 is connected to I2S_CKIN when JP16 is set as show to the right:
3
2
1
3
2
1
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