upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 430

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

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12.7 Caution for Use in On-chip Debug Mode
When a break command is detected while UARTA received data in on-chip debug mode, an overrun
error is generated.
430
Transfer rate for continuous transmission
The transfer rate from the stop bit to the start bit of the next data is extended two clocks when con-
tinuous transmission is executed. However, the timing on the reception side is initialized when the
start bit is detected, and therefore, the transfer result is not affected.
Where 1 bit data length is FL, stop bit length is FLstp, and base clock frequency is f
bit length can be calculated by the following expression.
Therefore, the transfer rate for continuous transmission is as follows.
Start bit
FL
Figure 12-18: Transfer Rate for Continuous Transmission
Chapter 12 Asynchronous Serial Interface A (UARTA)
Bit 0
FL
Bit 1
FL
User’s Manual U16702EE3V2UD00
Transfer rate = 11 × FL + 2/f
1 data frame
FLstp = FL + 2/f
Bit 7
FL
Parity bit
XCLK
FL
XCLK
Stop bit
FLstp
Start bit
FL
Start bit in
second byte
XCLK
Bit 0
FL
, the stop