UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 375

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

Reception interrupt
Reception processing is as follows.
Remark n = 0, 1
Edge detection
<1> The wakeup signal is detected at the edge of the pin, and enables UART6n and sets the SBF reception
<2> Reception continues until the STOP bit is detected. When an SBF with low-level data of 11 bits or more has
<3> If SBF reception has been completed correctly, an interrupt signal is output. Start 16-bit timer/event counter
<4> Calculate the baud rate error from the bit length of the sync field, disable UART6n after SF reception, and
<5> Distinguish the checksum field by software. Also perform processing by software to initialize UART6n after
Capture timer
(INTSR6n)
(INTPR6n)
mode.
been detected, it is assumed that SBF reception has been completed correctly, and an interrupt signal is
output. If an SBF with low-level data of less than 11 bits has been detected, it is assumed that an SBF
reception error has occurred. The interrupt signal is not output and the SBF reception mode is restored.
00 by the SBF reception end interrupt servicing and measure the bit interval (pulse width) of the sync field
(see 6.5.7 Pulse width measurement mode (TPnMD2 to TPnMD0 bits = 110)). Detection of errors
OVE6n, PE6n, and FE6n is suppressed, and error detection processing of UART communication and data
transfer of the shift register and RXB6n is not performed. The shift register holds the reset value FFH.
then re-set baud rate generator control register 6n (BRGC6n).
reception of the checksum field and to set the SBF reception mode again.
LIN bus
RXD6n
(input)
Disable
signal frame
<1>
Wakeup
CHAPTER 12 SERIAL INTERFACES UART60 AND UART61
Enable
Figure 12-2. LIN Reception Operation
Preliminary User’s Manual U19748EJ1V0UD
Disable
SBF reception
break field
Sync
13-bit
<2>
<3>
reception
Sync
field
SF
Enable
<4>
reception
Identifer
field
ID
Data field
reception
Data
Data field Checksum
reception
Data
reception
Data
field
<5>
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