Electric tools are expected with sound prospects as they are applied in a wide range of fields including production and life. With the continuous improvement of production technology in recent years, electric tools are gradually evolved into smaller or portable versions to meet the requirements for more energy-saving, more efficient and safer electric tool control solutions in the industry.

The UM3213A series of Unicmicro is a low-power 32-bit MCU developed based on ARM Cortex-M0+. Clocked at 32 MHz, with 64 KB Flash and a wide voltage range of 1.8–5.5 V, UM3213A features high integration, high interference immunity, high reliability, and rich peripherals including 3×PWM complementary outputs, 1×operational amplifier, 3×comparators, 8-channel 12-bit 1Msps ADC, multiplex UART, SPI and I2C, etc. This series is applicable to a variety of scenarios such as main control, exception protection and control algorithm implementation of electric tools, meeting customer’s needs for solution implementation.

Solution features:

Low-speed and heavy-load startup

Built-in 3-channel comparator for fast and direct access to counter potential signal

Stepless speed regulation and detection circuit for runaway

Hardware overcurrent protection

Protection against under/over-voltage, under/over-temperature, under/over-current, over-speed, etc.

Emergency stop mechanism for protection under abnormal conditions

Integrated motor control unit

Solution benefits:

Highly capable of running with load

Efficient and reliable system operation

Short development cycle and long service life

Easy to implement, low hardware cost

Applicable to all kinds of motor; mature control algorithm

Anti-copy board to prevent programs in eFlash from being pirated