h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 554
h8s-2646
Manufacturer Part Number
h8s-2646
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2646.pdf
(1165 pages)
- Current page: 554 of 1165
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Section 14 Smart Card Interface
Serial Data Reception (Except Block Transfer Mode): Data reception in Smart Card mode uses
the same processing procedure as for the normal SCI. Figure 14.7 shows an example of the
transmission processing flow.
[1] Perform Smart Card interface mode initialization as described above in Initialization.
[2] Check that the ORER flag and PER flag in SSR are cleared to 0. If either is set, perform the
[3] Repeat steps [2] and [3] until it can be confirmed that the RDRF flag is set to 1.
[4] Read the receive data from RDR.
[5] When receiving data continuously, clear the RDRF flag to 0 and go back to step [2].
[6] To end reception, clear the RE bit to 0.
Rev. 5.00 Sep 22, 2005 page 528 of 1136
REJ09B0257-0500
appropriate receive error processing, then clear both the ORER and the PER flag to 0.
No
No
Figure 14.7 Example of Reception Processing Flow
RDRF flag in SSR to 0
Read RDR and clear
All data received?
Clear RE bit to 0
ORER = 0 and
Start reception
Initialization
RDRF=1?
PER = 0
Start
Yes
Yes
Yes
No
Error processing
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