Table of Contents
Advertisement
15.7
Smart Card Interface Description
The SCI supports the IC card (smart card) interface based on the ISO/IEC 7816-3 (Identification
Card) standard as an enhanced serial communication interface function. Smart card interface mode
can be selected using the appropriate register.
15.7.1
Sample Connection
Figure 15.21 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 VCC using a resistor. Setting the RE
and TE bits in SCR 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.
Figure 15.21 Pin Connection for Smart Card Interface
TxD
RxD
SCK
Rx (port)
This LSI
Main unit of the device
to be connected
Section 15 Serial Communication Interface (SCI)
VCC
I/O
Data line
CLK
Clock line
RST
Reset line
Rev. 1.00 Apr. 28, 2008 Page 449 of 994
IC card
REJ09B0452-0100
Advertisement
Table of Contents
