UPD78F0411GA-GAM-AX Datasheet, PDF (373/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 14 SERIAL INTERFACE UART6
(2) Error of baud rate
The baud rate error can be calculated by the following expression.
Actual baud rate (baud rate with error)
• Error (%) =
− 1 × 100 [%]
Desired baud rate (correct baud rate)
Cautions 1. Keep the baud rate error during transmission to within the permissible error range at the
reception destination.
2. Make sure that the baud rate error during reception satisfies the range shown in (4)
Permissible baud rate range during reception.
Example: Frequency of base clock = 10 MHz = 10,000,000 Hz
Set value of MDL67 to MDL60 bits of BRGC6 register = 00100001B (k = 33)
Target baud rate = 153600 bps
Baud rate = 10 M / (2 × 33)
= 10000000 / (2 × 33) = 151,515 [bps]
Error = (151515/153600 − 1) × 100
= −1.357 [%]
User’s Manual U18698EJ1V0UD
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