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H8S2245 Datasheet(PDF) 525 Page - Renesas Technology Corp

Part # H8S2245
Description  Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
PDF  818 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8S2245 Datasheet(HTML) 525 Page - Renesas Technology Corp

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Section 13 Smart Card Interface
Rev.3.00 Mar. 26, 2007 Page 483 of 772
REJ09B0355-0300
13.3.2
Pin Connections
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
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/2245
I/O
CLK
RST
VCC
Connected equipment
IC card
Data line
Clock line
Reset line
Figure 13.2 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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