upd78f0103 Renesas Electronics Corporation., upd78f0103 Datasheet - Page 231
upd78f0103
Manufacturer Part Number
upd78f0103
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0103.pdf
(485 pages)
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Remark LIN stands for Local Interconnect Network and is a low-speed (1 to 20 kbps) serial communication
Notes 1.
Remark The interval between each field is controlled by software.
INTST6
Figures 12-1 and 12-2 outline the transmission and reception operations of LIN.
Sleep
TX6
bus
2.
3.
protocol intended to aid the cost reduction of an automotive network.
LIN communication is single-master communication, and up to 15 slaves can be connected to one
master.
The LIN slaves are used to control the switches, actuators, and sensors, and these are connected to the
LIN master via the LIN network.
Normally, the LIN master is connected to a network such as CAN (Controller Area Network).
In addition, the LIN bus uses a single-wire method and is connected to the nodes via a transceiver that
complies with ISO9141.
In the LIN protocol, the master transmits a frame with baud rate information and the slave receives it and
corrects the baud rate error. Therefore, communication is possible when the baud rate error in the slave
is 15% or less.
The wakeup signal frame is substituted by 80H transmission in the 8-bit mode.
The synchronous break field is output by hardware.
generator control register 6 (BRGC6) (see 12.4.2 (2) (h) SBF transmission).
INTST6 is output on completion of each transmission. It is also output when SBF is transmitted.
signal frame
8 bits
Wakeup
Note 1
13-bit
Figure 12-1. LIN Transmission Operation
Synchronous
transmission
CHAPTER 12 SERIAL INTERFACE UART6
break field
Note 2
SBF
User’s Manual U15836EJ5V0UD
Note 3
Synchronous
transmission
field
55H
transmission
Ident
Data
field
The output width is adjusted by baud rate
transmission
Data field
Data
transmission
Data field Checksum
Data
transmission
Data
field
231
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