Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 17 ASYNCHRONOUS SERIAL INTERFACE C (UARTC)
R01UH0042EJ0500 Rev.5.00 Page 760 of 1513
Aug 12, 2011
(6) Transfer rate during continuous transmission
During continuous transmission, the transfer rate from the stop bit to the next start bit is usually 2 base clocks
longer. However, timing initialization is performed via start bit detection by the receiving side, so this has no
influence on the transfer result.
Figure 17-21. Transfer Rate During Continuous Transfer
Start bit
Bit 0 Bit 1 Bit 7
Parity bit Stop bit
FL
1 data frame
FL FL FL FL FLFLFLstp
Start bit of 2nd byte
Start bit
Bit 0
The following equation can be obtained assuming 1 bit data length: FL; stop bit length: FLstp; and base clock
frequency: f
UCLK.
FLstp = FL + 2/f
UCLK
Therefore, the transfer rate during continuous transmission is as follows.
Transfer rate = 11 × FL + (2/f
UCLK)