CHAPTER 1 OUTLINE
The 78K0R/IB3 is a 16-bit single-chip microcontroller that uses a 78K0R CPU core and incorporates peripheral
functions, such as ROM/RAM, a multi-function timer, a multi-function serial interface, an A/D converter, a
programmable gain amplifier (PGA), a comparator, and a watchdog timer.
This product has been developed for inverter control applications that are controlled by using two chips. The multifunction
timer (timer array unit TAUS) that can perform various PWM operations operates at a maximum resolution of
40 MHz and is provided with several functions, such as a PWM (complementary PWM × 2 channels) output function
with dead time, a 6-phase PWM output function with dead time, and a DC inverter real-time output function, and can
perform inverter control. Furthermore, the multi-function timer is equipped with two channels of comparators for failsafe
applications and can set PWM to high impedance when an overcurrent occurs.
In consideration of motor applications, the internal high-speed oscillator (CPU clock 20 MHz, timer 40 MHz) is
mounted. This can solve problems such as the resonator coming off.
The 78K0R/IB3 provides high cost performance in various situations.