st7fmc2s7t6 STMicroelectronics, st7fmc2s7t6 Datasheet - Page 149

• Manufacturer Part Number: st7fmc2s7t6
• Description: 8-bit Mcu With Nested Interrupts, Flash, 10-bit Adc, Brushless Motor Control, Five Timers, Spi, Linsci
• Manufacturer: STMicroelectronics

MOTOR CONTROLLER (Cont’d)
10.6.6.3 D Event detection
In sensorless mode, the D Window Filter becomes
active after each C event. It blanks out the D event
during the time window defined by the DWF[3:0]
bits in the MDFR register (see
value is 200µs.
This Window Filter becomes active after both
hardware and software C events.
The D Event Filter becomes active after the D Win-
dow Filter. It counts the number of consecutive D
events up to a limit defined by the DEF[3:0] bits in
the MDFR register. The reset value is 1. The D bit
is set when the counter limit is reached.
Sampling is done at a selectable frequency
(f
The D event filter is active only for a hardware D
event (D
to 1.
Figure 79.
SCF
), see
Reset counter
H
). For a simulated (D
D Window and Event Filter Flowchart
Table
No
No
No
Increment counter
Blanking Window
Counter=Limit?
82.
Set the D bit
Sampling
Yes
End of
Event
C
D
?
?
Yes
No
Table
S
) event, it is forced
WINDOW
26). The reset
FILTER
FILTER
EVENT
Yes
Limit=1?
Yes
Note: Times are indicated for 4 MHz f
Table 27. D Event filter Setting
DWF3 DWF2 DWF1 DWF0
DEF3 DEF2 DEF1 DEF0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
C to D window fil-
ter in Sensorless
D event Limit
Mode (SR=0)
ST7MC1/ST7MC2
100 µs
120 µs
140 µs
160 µs
180 µs
200 µs
10 µs
15 µs
20 µs
25 µs
30 µs
35 µs
40 µs
60 µs
80 µs
5 µs
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
PERIPH
149/308
SR=1
SR=1
1