Smart Card Interface Description; Sample Connection; Figure 16.24 Pin Connection For Smart Card Interface - Renesas H8S/2158 User Manual

16.7

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.
16.7.1

Sample Connection

Figure 16.24 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 16.24 Pin Connection for Smart Card Interface

Section 16 Serial Communication Interface (SCI, IrDA, and CRC)
TxD
RxD
SCK
Rx (port)
This LSI
Main unit of the device
to be connected
VCC
I/O
Data line
CLK
Clock line
RST
Reset line
Rev. 3.00 Jan 25, 2006 page 445 of 872
IC card
REJ09B0286-0300