M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 586

• Manufacturer Part Number: M-V850E-IA4
• Description: KIT EVAL V850E IA4 UPD70F3186
• Manufacturer: Renesas Electronics America

Specifications of M-V850E-IA4

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

14.6.3 Continuous transmission procedure
shift operation. The transmit timing of the UARTAn transmit shift register can be judged from the transmission enable
interrupt request signal (INTUAnT). An efficient communication rate is realized by writing the data to be transmitted
next to the UAnTX register during transfer.
584
UARTAn can write the next transmit data to the UAnTX register when the UARTAn transmit shift register starts the
Caution During continuous transmission execution, perform initialization after checking that the
Remark
UAnSTR.UAnTSF bit is 0.
performed while the UAnTSF bit is 1.
n = 0, 1
CHAPTER 14 ASYNCHRONOUS SERIAL INTERFACE A (UARTA)
Figure 14-5. Continuous Transmission Processing Flow
Occurrence of transmission
Required number of
writes performed?
Register settings
The transmit data cannot be guaranteed when initialization is
User’s Manual U16543EJ4V0UD
UAnTX write
interrupt?
Start
End
Yes
Yes
No
No