ST72561J9-Auto STMicroelectronics, ST72561J9-Auto Datasheet - Page 200
ST72561J9-Auto
Manufacturer Part Number
ST72561J9-Auto
Description
8-bit MCU for automotive
Manufacturer
STMicroelectronics
Datasheet
1.ST72561R9-AUTO.pdf
(324 pages)
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
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LINSCI serial communication interface (LIN master only)
Note:
16.4.3
200/324
Idle characters
Setting the TE bit drives the SCI to send an idle frame before the first data frame.
Clearing and then setting the TE bit during a transmission sends an idle frame after the
current word.
Resetting and setting the TE bit causes the data in the TDR register to be lost. Therefore the
best time to toggle the TE bit is when the TDRE bit is set, that is, before writing the next byte
in the SCIDR.
LIN transmission
The same procedure has to be applied for LIN master transmission with the following
differences:
●
●
Receiver
The SCI can receive data words of either 8 or 9 bits. When the M bit is set, word length is 9
bits and the MSB is stored in the R8 bit in the SCICR1 register.
Character reception
During a SCI reception, data shifts in least significant bit first through the RDI pin. In this
mode, the SCIDR register consists or a buffer (RDR) between the internal bus and the
received shift register (see
Procedure
●
●
●
When a character is received:
●
●
●
Clearing the RDRF bit is performed by the following software sequence done by:
1.
2.
The RDRF bit must be cleared before the end of the reception of the next character to avoid
an overrun error.
Break character
When a break character is received, the SCI handles it as a framing error.
Clear the M bit to configure 8-bit word length.
Set the LINE bit to enter LIN master mode. In this case, setting the SBK bit sends 13
low bits.
Select the M bit to define the word length.
Select the desired baud rate using the SCIBRR and the SCIERPR registers.
Set the RE bit, this enables the receiver which begins searching for a start bit.
The RDRF bit is set. It indicates that the content of the shift register is transferred to the
RDR.
An interrupt is generated if the RIE bit is set and the I bit is cleared in the CCR register.
The error flags can be set if a frame error, noise or an overrun error has been detected
during reception.
An access to the SCISR register
A read to the SCIDR register.
Figure
Doc ID 12370 Rev 8
88).
ST72561-Auto
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