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ST7MC1K2TC bảng dữ liệu(PDF) 176 Page - STMicroelectronics

tên linh kiện ST7MC1K2TC
Giải thích chi tiết về linh kiện  8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI
PDF  308 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7MC1K2TC bảng dữ liệu(HTML) 176 Page - STMicroelectronics

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MOTOR CONTROLLER (Cont’d)
Figure 96. Simulated commutation event generation with only 1 Hall effect sensor (SC bit =1)
Note: If the SC bit is set during Z event interrupt,
then the 8*8 bit hardware multiplication result must
be overwritten in the MCOMP register. Otherwise,
when the SC bit is set, the result of the multiplica-
tion is not taken into account after a Z event.
Figure 97. Simulated commutation and Z event
CH
CH
Z
CS
Z
Z
CS
D
C interrupt
SC set in MCRC
After C interrupt
MCOMP is written for Cs event
if MCOMP<=MTIM
Immediate CS generation
CS
CS
D
C interrupt
SC reset in MCRB
Next C event = CH with 8*8 bit multiplication
Z zero-crossing event
D Demagnetisation event
CH Hardware commutation
CS Simulated commutation
t
Cs
CH
Z
Z
Z
D
SC bit is reset
D
Z zero-crossing event
D Demagnetisation event
CH Hardware commutation
CS Simulated commutation
MCOMP
register
the result of the
hardware multiplication is put
in MCOMP-->CH and compared
SC bit is set during Z IT
the hardware multiplication is taken
into account but the value in MCOMP
can be overwritten
Cs
Z
D
SC bit is already set when Z IT
occurs. The hardware multipli-
-cation is not taken into account
A value has to be written
in the MCOMP register
t
with MTIM once written
1



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