st7pmc2s6 STMicroelectronics, st7pmc2s6 Datasheet - Page 184

• 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

On-chip peripherals
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The end of demagnetization event (D), is also detected by the MTC or simulated with a timer
compare feature when no detection is possible.
The MTC manages these three events always in the same order: Z generates C after a
delay computed in realtime, then waits for D in order to enable the peripheral to detect
another Z event.
The BEMF zero-crossing event (Z), can also be detected by the MTC or simulated with a
timer compare feature when no detection is possible.
The speed regulation is managed by the microcontroller, by means of an adjustable
reference current level in case of current control, or by direct PWM duty-cycle adjustment in
case of voltage control.
Figure 74. Chronogram of events (in autoswitched mode)
(output of the analog MUX)
P signal when sampled
Voltage on phase A
Voltage on phase B
Voltage on phase C
(threshold value for
Input comparator)
ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
Z
Cn processing
H
or Z
Wait for C
Wait for D
V
Wait for Z
REF
C
D
D
H
H
S
S
event
event
even t
event
n
n
Z
D
C
V
V
T
n
DD
SS
n
n
t
sampling
BEMF