ST72561R9-Auto STMicroelectronics, ST72561R9-Auto Datasheet - Page 321
ST72561R9-Auto
Manufacturer Part Number
ST72561R9-Auto
Description
8-bit MCU for automotive
Manufacturer
STMicroelectronics
Datasheet
1.ST72561R9-AUTO.pdf
(324 pages)
Specifications of ST72561R9-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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ST72561-Auto
24.2.2
24.3
24.3.1
Analysis
The LIN protocol specifies a minimum of 13 bits for the break duration, but there is no
maximum value. Nevertheless, the maximum length of the header is specified as
(14 + 10 + 10 + 1) x 1.4 = 49 bits. This is composed of:
●
●
●
Every LIN frame starts with a break character. Adding an idle character increases the length
of each header by 10 bits. When the problem occurs, the header length is increased by 11
bits and becomes ((14 + 11) + 10 + 10 + 1) = 45 bits.
To conclude, the problem is not always critical for LIN communication if the software keeps
the time between the sync field and the ID smaller than 4 bits, that is, 208µs at 19200 baud.
The workaround is the same as for SCI mode but considering the low probability of
occurrence (1%), it may be better to keep the break generation sequence as it is.
16-bit and 8-bit timer PWM mode
In PWM mode, the first PWM pulse is missed after writing the value FFFCh in the OC1R or
OC2R register.
ROM devices only
16-bit timer PWM mode buffering feature change
In all devices, the frequency and period of the PWM signal are controlled by comparing the
counter with a 16-bit buffer updated by the OCiHR and OCiLR registers. In ROM devices,
contrary to the description in
not inhibited after a write instruction to the OCiHR register. Instead the buffer update at the
end of the PWM period is inhibited until OCiLR is written. This improved buffer handling is
fully compatible with applications written for Flash devices.
the synch break field (14 bits)
the synch field (10 bits)
the identifier field (10 bits)
Pulse width modulation
Doc ID 12370 Rev 8
mode, the output compare function is
Important notes
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