ST72561J9-Auto STMicroelectronics, ST72561J9-Auto Datasheet - Page 176

• Manufacturer Part Number: ST72561J9-Auto
• Description: 8-bit MCU for automotive
• Manufacturer: STMicroelectronics

Specifications of ST72561J9-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years at 55 °C
• 5 Power Saving Modes: halt, auto wake up from halt, active halt, wait and slow

LINSCI serial communication interface (LIN master/slave)
Note:
15.9.2
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In LIN Slave mode the LIN baud rate generator is selected instead of the conventional or
extended prescaler. The LIN baud rate generator is common to the transmitter and the
receiver.
Then the baud rate can be programmed using LPR and LPRF registers.
It is mandatory to set the LIN configuration first before programming LPR and LPRF,
because the LIN configuration uses a different baud rate generator from the standard one.
LIN transmission
In LIN mode the same procedure as in SCI mode has to be applied for a LIN transmission.
To transmit the LIN header the proceed as follows:
●
●
●
●
●
Figure 80. LIN characters
First set the SBK bit in the SCICR2 register to start transmitting a 13-bit LIN synch
break
Reset the SBK bit
Load the LIN synch field (0x55) in the SCIDR register to request synch field
transmission
Wait until the SCIDR is empty (TDRE bit set in the SCISR register)
Load the LIN message identifier in the SCIDR register to request Identifier
transmission.
Start
8-bit Word length (M bit is reset)
Start
Bit
Bit
Measurement for baud rate autosynchronization
Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7
Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7
Data Character
Idle Line
LIN Synch Field
Doc ID 12370 Rev 8
LIN Synch Break = 13 low bits
Stop
Stop
Bit
Bit
Next
Start
Next
Start
Start
Bit
Bit
Bit
Next Data Character
Extra
LIN Synch Field
‘1’
Start
ST72561-Auto
Bit