HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 299

• Manufacturer Part Number: HD64F3437TFI16V
• Description: MCU FLASH 60K 100-TQFP
• Manufacturer: Renesas Electronics America

Specifications of HD64F3437TFI16V

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Receiving Serial Data: Follow the procedure in figure 12.7 for receiving serial data.
1
2
3
Read receive data from RDR,
and clear RDRF bit to 0
Read ORER, PER, and
Read RDRF bit in SSR
Clear RE to 0 in SCR
Start error handling
process error, and
Discriminate and
Start receiving
PER
FER in SSR
RDRF = 1?
clear flags
ORER = 1?
receiving?
FER = 1?
Finished
Initialize
in SSR
Return
End
RER
Yes
Yes
No
No
Figure 12.7 Sample Flowchart for Receiving Serial Data
Yes
No
Yes
No
Error handling
Break?
No
4
Clear RE to 0
in SCR
1.
2.
3.
4.
End
Yes
SCI initialization: the receive data function of the RxD
pin is selected automatically.
To continue receiving serial data: read RDR and
clear RDRF to 0 before the stop bit of the current
frame is received.
SCI status check and receive data read: read the
serial status register (SSR), check that RDRF is set
to 1, then read receive data from the receive data
register (RDR) and clear RDRF to 0. Transition of
the RDRF bit from 0 to 1 can be reported by an RXI
interrupt.
Receive error handling and break detection: if a
receive error occurs, read the ORER, PER, and
FER bits in SSR to identify the error. After executing
the necessary error handling, clear ORER, PER, and
FER all to 0. Transmitting and receiving cannot
resume if ORER, PER, or FER remains set to 1.
When a framing error occurs, the RxD pin can be
read to detect the break state.
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