HD64F3039F18 Datasheet, PDF (422/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 12 Smart Card Interface
12.3.2 Pin Connections
Figure 12.2 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 TxD₀ pin and RxD₀ 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 SCK₀ 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.
V_CC
TxD₀
RxD₀
SCK₀
Px (port)
H8/3039 Group
Chip
Data line
Clock line
Reset line
I/O
CLK
RST
IC card
Connected equipment
Figure 12.2 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.
Rev.3.00 Mar. 26, 2007 Page 398 of 682
REJ09B0353-0300