Operation In Smart Card Interface Mode; Sample Connection - Renesas H8SX/1650 Hardware Manual

Section 13 Serial Communication Interface (SCI)
13.7

Operation in Smart Card Interface Mode

The SCI supports the IC card (smart card) interface, supporting the 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.
13.7.1

Sample Connection

Figure 13.21 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.
Figure 13.21 Pin Connection for Smart Card Interface
Rev.2.00 Jun. 28, 2007 Page 506 of 666
REJ09B0311-0200
TxD
RxD
SCK
Rx (port)
This LSI
Main unit of the device
to be connected
using a resistor. Setting the RE
CC
V
CC
I/O
Data line
CLK
Clock line
RST
Reset line
IC card