UPD78F0411GA-GAM-AX Datasheet, PDF (377/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 14 SERIAL INTERFACE UART6
(5) Data frame length during continuous transmission
When data is continuously transmitted, the data frame length from a stop bit to the next start bit is extended by
two clocks of base clock from the normal value. However, the result of communication is not affected because
the timing is initialized on the reception side when the start bit is detected.
Figure 14-28. Data Frame Length During Continuous Transmission
1 data frame
Start bit of
second byte
Start bit
Bit 0
Bit 1
Bit 7 Parity bit Stop bit Start bit
Bit 0
FL
FL
FL
FL
FL
FLstp
FL
FL
Where the 1-bit data length is FL, the stop bit length is FLstp, and base clock frequency is fXCLK6, the following
expression is satisfied.
FLstp = FL + 2/fXCLK6
Therefore, the data frame length during continuous transmission is:
Data frame length = 11 × FL + 2/fXCLK6
User’s Manual U18698EJ1V0UD
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