HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 525

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

13.3.2
Figure 13.2 shows a schematic diagram of Smart Card interface related pin connections.
In communication with an IC card, since both transmission and reception are carried out on a
single data transmission line, the TxD pin and RxD pin should be connected with the LSI pin. The
data transmission line should be pulled up to the V
When the clock generated on the Smart Card interface is used by an IC card, the SCK pin output is
input to the CLK pin of the IC card. No connection is needed if the IC card uses an internal clock.
LSI port output is used as the reset signal.
Other pins must normally be connected to the power supply or ground.
Note: If an IC card is not connected, and the TE and RE bits are both set to 1, closed
transmission/reception is possible, enabling self-diagnosis to be carried out.
Figure 13.2 Schematic Diagram of Smart Card Interface Pin Connections
Pin Connections
Connected equipment
H8S/2245
Rx (port)
SCK
RxD
TxD
CC
power supply with a resistor.
Data line
Clock line
Reset line
Rev.3.00 Mar. 26, 2007 Page 483 of 772
V
CC
Section 13 Smart Card Interface
I/O
CLK
RST
REJ09B0355-0300
IC card