HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 435

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

13.3
13.3.1
The main features of the smart card interface are as follows.
• One frame consists of 8-bit data plus a parity bit.
• In transmission, a guard time of at least 2 etu (elementary time units: the time for transfer of
• If a parity error is detected during reception, a low error signal level is output for 1 etu period
• If an error signal is detected during transmission, the same data is transmitted automatically
• Only asynchronous communication is supported; there is no synchronous communication
13.3.2
Figure 13.2 shows a pin connection diagram for the smart card interface.
In communication with a smart card, since both transmission and reception are carried out on a
single data transmission line, the TxD pin and RxD pin should both be connected to this line. The
data transmission line should be pulled up to V
When the smart card uses the clock generated on the smart card interface, the SCK pin output is
input to the CLK pin of the smart card. If the smart card uses an internal clock, this connection is
unnecessary.
The reset signal should be output from one of the H8/3008's generic ports.
In addition to these pin connections, power and ground connections will normally also be
necessary.
one bit) is provided between the end of the parity bit and the start of the next frame.
10.5 etu after the start bit.
after the elapse of 2 etu or longer.
function.
Operation
Overview
Pin Connections
CC
with a resistor.
Rev.4.00 Aug. 20, 2007 Page 391 of 638
13. Smart Card Interface
REJ09B0395-0400