st7pmc2s6 STMicroelectronics, st7pmc2s6 Datasheet - Page 235

• Manufacturer Part Number: st7pmc2s6
• Description: 8-bit Mcu For Automotive With Nested Interrupts, Flash, 10-bit Adc, Brushless Motor Control, 5 Timers, Spi, Linsci?
• Manufacturer: STMicroelectronics

ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
Current mode
In current mode, the PWM output signal is generated by a combination of the output of the
measurement window generator (see
and is directed to the output channel manager as well
The current reference is provided to the comparator by phase U, V or W of the PWM
Generator (up to 12-bit accuracy) the signal from the three compare registers U, V or W can
be output by setting the PWMU, PWMV or PWMW bits in the MPWME register. The PWM
signal is filtered through an external RC filter on pin MCCREF.
The detected current input must be present on the MCCFI pin.
Current feedback comparator
Two programmable filters are implemented:
Figure 106. Current window and feedback filters
A blanking window (current window filter) after PWM has been switched ON to avoid
spurious PWM OFF states caused by parasitic noise
An event counter (current feedback filter) to prevent PWM being turned OFF when the
first comparator edge is detected.
Reset counter
No
No
No
blanking window?
Increment counter
Current > limit?
Counter = limit?
Figure
Set the CL bit
Yes
PWM on
End of
Yes
108) and the output of the current comparator,
No
Current window filter
Current feedback filter
(Figure
Yes
Limit = 1?
Yes
109).
On-chip peripherals
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