tmp89fm82 TOSHIBA Semiconductor CORPORATION, tmp89fm82 Datasheet - Page 313
tmp89fm82
Manufacturer Part Number
tmp89fm82
Description
8 Bit Microcontroller Tlcs-870/c1 Series
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP89FM82.pdf
(452 pages)
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RA000
19.5
19.5.1
width and the commutation function capable of brushless DC motor control. In addition, it has the protective functions
such as overload protection and emergency stop functions necessary to protect the power drive unit, and the dead time
adding function to prevent the same phase upper/lower transistors getting shorted by simultaneous turn-on when
switching change.
after setting the port registers and initial setting of MDCRA other bits..
19.5.1.1
The Three-phase PWM Output Unit has the function to generate three-phase PWM waves with any desired pulse
In case of three phase PWM wave form output to pins (U,V,W,X,Y,Z), MDCRA<PWMEN>bit must be enabled
Three-phase PWM Output Unit
protective circuit (emergency stop and overload), and a dead time control circuit.
The three-phase PWM output unit consists of a pulse width modulation circuit, commutation control circuit,
Configuration of the three-phase PWM output unit
waveform mode, triangular wave modulation or sawtooth wave modulation can be selected by using the PMD
Control Register (MDCRA<PWMMD>). The PWM frequency is set by using the PMD Period Register
(MDPRD). The following shows the relationship between the value of this register and the PWM counter
clock set by (MDCRB<PWMCK>).
This circuit produces three-phase independent PWM waveforms with an equal PWM frequency. For PWM
Pulse width modulation circuit (PWM waveform generating unit)
Page 297
TMP89FM82
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