HD6432351 Datasheet, PDF (622/989 Pages) Renesas Technology Corp – The H8S/2000 CPU has an internal 32-bit architecture, is provided with sixteen 16-bit general registers and a concise

14.3.2 Pin Connections
Figure 14-2 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_CC power supply with a resistor.
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.
TxD
RxD
SCK
Rx (port)
H8S/2350
Connected equipment
V_CC
Data line
Clock line
Reset line
I/O
CLK
RST
IC card
Figure 14-2 Schematic Diagram of Smart Card Interface Pin Connections
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.
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