st7pmc2s6 STMicroelectronics, st7pmc2s6 Datasheet - Page 202

• 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
Figure 84. Protection of Z
1. Preload bit, new value taken into account at the next C event (in normal mode) or when a value is written in the MPHST
Position sensor mode
In position sensor mode (SR = 1 in MCRA register), the rotor position information is given to the
peripheral by means of logical data on the three inputs MCIA, MCIB and MCIC (hall sensors).
For each step one of these three inputs is selected (IS[1:0] bits in register MPHST) in order to detect the
Z event. Be careful that the phase comparator is OFF until CKE and /or DAC bits are set in MCRA
register.
In sensor mode, demagnetization and the related features (such as the special PWM configuration, D
D
Table 90.
In sensor mode configuration the rotor detection does not need a particular phase configuration to
perform the measurement and a Z event can be read from any detection window. The sampling is done
at a selectable frequency (f
precise than it is in sensorless mode.
202/371
H
Phase comparator
register when in direct access mode. For more details refer to the description of the DAC bit in
on page
management, programmable filter) are not available (see
+
-
V
I
265. The use of a preload register allows all the registers to be updated at the same time
Fz
C
SR bit MCRA register
Sampling clock
Demagnetization access
1
0
SCF
Current sample
H
Instantaneous
edge
ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
D
CP
event detection
) (see
C Rz
S
R
Q
Q
Table
166). This means that Z event position sensoring is more
D
CP
Previous sample
S
R
D
CP
Q
Q
S
R
Q
Q
Demagnetization feature availability
Rz
Table
Fz
90).
Yes
No
Rz
Fz
C
V
I
MCRB register
CPB
Control register A (MCRA)
Commutation event
Voltage mode
Current mode
Rising edge zero-crossing
Falling edge zero-crossing
(1)
Falling/rising edge
Direct/filter PZ
MCRA register
bit
bit 1
F
D
MPOL register
ZVD bit
Z
S
or