Datasheet

5.4.7.1 EMV SIM specifications
Each EMV SIM module interface consists of a total of five pins.
The interface is designed to be used with synchronous Smart cards, meaning the EMV
SIM module provides the clock used by the Smart card. The clock frequency is
typically 372 times the Tx/Rx data rate; however, the EMV SIM module can also
work with CLK frequencies of 16 times the Tx/Rx data rate.
There is no timing relationship between the clock and the data. The clock that the
EMV SIM module provides to the Smart card is used by the Smart card to recover the
clock from the data in the same manner as standard UART data exchanges. All five
signals of the EMV SIM module are asynchronous with each other.
There are no required timing relationships between signals in normal mode. The smart
card is initiated by the interface device; the Smart card responds with Answer to
Reset. Although the EMV SIM interface has no defined requirements, the ISO/IEC
7816 defines reset and power-down sequences (for detailed information see ISO/IEC
7816).
EMVSIMn_PD
EMVSIMn_RST
EMVSIMn_CLK
EMVSIMn_IO
EMVSIMn_VCCEN
SI7
SI8
SI9
SI10
Figure 36. EMV SIM Clock Timing Diagram
Electrical characteristics
Kinetis KL82 Microcontroller, Rev. 3, 08/2016
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NXP Semiconductors