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ST7MC1K2 数据表(PDF) 187 Page - STMicroelectronics

部件名 ST7MC1K2
功能描述  Clock, reset and supply management
PDF  371 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST7MC1K2 数据表(HTML) 187 Page - STMicroelectronics

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Obsolete
Product(s)
- Obsolete
Product(s)
ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
On-chip peripherals
187/371
The shape of the output voltage (voltage, frequency, sinewave, trapezoid, ...) is completely
managed by the application software, in charge of computing the compare values to be
loaded for a given PWM duty-cycle (refer to Figure 77).
Finally, the PWM modulated voltage generated by the power stage is smoothed by the
motor inductance to get sinusoidal currents in the stator windings.
The induction motor being asynchronous, there is no need to synchronize the rotor position
to the sinewave generation phase in most of the applications.
Part of the MTC dedicated to delay computation and event sampling can thus be
reconfigured to perform speed acquisition of the most common speed sensor, without the
need of an additional standard timer.
This speed measurement timer with clear-on-capture and clock prescaler auto-setting
allows to keep the CPU load to a minimum level while taking benefit of the embedded input
comparator and edge detector.
Figure 76.
Complementary PWM generation for three-phase induction motor
(1 phase represented)
U event
Compare preload register processing
MCP0
MCPU
PWM generator counter
PWM ref signal
MCO1
MCO0
Deadtime insertion
Obsolete
Product(s)
- Obsolete
Product(s)



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