12.7
Operation in Smart Card Interface Mode
The SCI supports the IC card (smart card) interface, conforming to ISO/IEC 7816-3 (Identification
Card) standard, as an extended serial communication interface function. Smart card interface
mode can be selected using the appropriate register.
12.7.1
Sample Connection
Figure 12.21 shows a sample connection between the smart card and this LSI. As in the figure,
since this LSI communicates with the IC card using a single transmission line, interconnect the
TxD and RxD pins and pull up the data transmission line to V
and TE bits to 1 with the IC card not connected enables closed transmission/reception allowing
self diagnosis. To supply the IC card with the clock pulses generated by the SCI, input the SCK
pin output to the CLK pin of the IC card. A reset signal can be supplied via the output port of this
LSI.
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TxD
RxD
SCK
Rx (port)
This LSI
Main unit of the device
to be connected
Figure 12.21 Pin Connection for Smart Card Interface
Section 12 Serial Communication Interface (SCI)
using a resistor. Setting the RE
CC
V
CC
I/O
Data line
CLK
Clock line
RST
Reset line
IC card
Rev. 3.00 Mar. 14, 2006 Page 429 of 804
REJ09B0104-0300