ST7FMC1K2TC STMICROELECTRONICS [STMicroelectronics], ST7FMC1K2TC Datasheet - Page 160
ST7FMC1K2TC
Manufacturer Part Number
ST7FMC1K2TC
Description
8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST7FMC1K2TC.pdf
(308 pages)
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ST7MC1/ST7MC2
MOTOR CONTROLLER (Cont’d)
In conclusion, there are 4 sampling types that are
available for Z event detection in sensorless
mode.
1. Sampling at the end of the OFF time of the
2. Sampling, at a programmable frequency inde-
3. Sampling during the ON time of the PWM sig-
4. Sampling, at a programmable frequency during
Note 1: The sampling type is applied only for Z
event detection after the D event has occured.
Whatever the sampling type for Z event detection,
the sampling of the signal for D event detection is
Figure 86. Sampling during ON time at f
160/308
1
PWM signal at the PWM frequency
pendent of the PWM state (during ON time or
OFF time of the signal). Sampling is done at
f
nal by adding a delay at PWM frequency
the ON time (addition of a programmable delay)
of the PWM signal. Sampling is done at f
see
SCF
, see
Table
PWM signal
Table
82.
82.
PWM OFF
state
DS[3:0]
SCF
SCF
f
during
ON time
SCF
,
always done at the selected f
Table
ther during ON or OFF time).
different sampling types in sensorless and in sen-
sor mode.
Note 2: When the MOE bit in the MCRA register is
reset (MCOx outputs in reset state), and the SR bit
in the MCRA register is reset (sensorless mode)
and the SPLG bit in the MCRC register is reset
(sampling at PWM frequency) then, depending on
the state of the ZSV bit in the MSCR register, Z
event sampling can run or be stopped (and D
event is sampled).
Note 3: When BEMF sampling is performed at the
end of the PWM signal off-time, the inputs in OFF-
state are grounded or put in HiZ as selected by the
DISS bit in the MSCR register.
Note 4: The ZEF[3:0] event counter in the MZFR
register is active in all configurations.
Current
sample
DS[3:0]
82), independently of the PWM signal (ei-
Table 34
SCF
frequency (see
explains the
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