UPD78F0138 NEC, UPD78F0138 Datasheet - Page 330

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

(5) Data frame length during continuous transmission
330
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.
Where the 1-bit data length is FL, the stop bit length is FLstp, and base clock frequency is f
expression is satisfied.
Therefore, the data frame length during continuous transmission is:
FLstp = FL + 2/f
Data frame length = 11 × FL + 2/f
Start bit
FL
Figure 14-27. Data Frame Length During Continuous Transmission
XCLK6
Bit 0
FL
CHAPTER 14 SERIAL INTERFACE UART6
Bit 1
FL
XCLK6
1 data frame
User’s Manual U16228EJ2V0UD
Bit 7
FL
Parity bit
FL
Stop bit
FLstp
Start bit
FL
Start bit of
second byte
XCLK6
Bit 0
FL
, the following