Section 13 Serial Communication Interface (SCI)
Rev. 1.00 Mar. 12, 2008 Page 475 of 1178
REJ09B0403-0100
13.7
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.
13.7.1 Sample
Connection
Figure 13.21 shows a sample connection between the smart card and this LSI. This LSI
communicates with the IC card using a single transmission line. When the SMIF bit in SCMR is
set to 1, the TxD and RxD pins are interconnected inside the LSI, which makes the RxD pin
function as an I/O pin. 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.
TxD
RxD
This LSI
VCC
I/O
Main unit of the device
to be connected
IC card
Data line
CLK
RST
SCK
Rx (port)
Clock line
Reset line
Figure 13.21 Pin Connection for Smart Card Interface
13.7.2
Data Format (Except in Block Transfer Mode)
Figure 13.22 shows the data transfer formats in smart card interface mode.
•
One frame contains 8-bit data and a parity bit in asynchronous mode.
•
During transmission, at least 2 etu (elementary time unit: time required for transferring one bit)
is secured as a guard time after the end of the parity bit before the start of the next frame.
•
If a parity error is detected during reception, a low error signal is output for 1 etu after 10.5 etu
has passed from the start bit.
•
If an error signal is sampled during transmission, the same data is automatically re-transmitted
after two or more etu.
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
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