LKS32MC034FLK6Q8C

The LKS32MC03x_6N series is a 32-bit compact microcontroller designed for motor control applications, integrating a three-phase full-bridge bootstrap gate driver module capable of directly driving 6 N-type MOSFETs. The device features a 48MHz Cortex-M0 core with a hardware division co-processor. It operates over a supply voltage range of 2.5V ~ 5.5V and a temperature range of -40°C ~ 105°C. On-chip memory includes 32kB Flash (with encryption and a 128-bit UID) and 4kB RAM. The clock system comprises a 4MHz high-precision RC oscillator with ±1% accuracy over the full temperature range, a 64kHz low-speed clock for low-power modes, and an internal PLL capable of providing up to 48MHz. The analog subsystem integrates a 12-bit SAR ADC (1.2Msps, 11 channels), two high-speed op-amps configurable in differential PGA mode, two comparators, an 8-bit DAC, a 1.2V voltage reference with 0.5% accuracy, a low-power LDO with power monitoring circuitry, and a high-precision low-temperature-drift high-frequency RC oscillator. Peripherals include UART, SPI, I²C, general-purpose timers, a dedicated motor control PWM module (with independent dead-time control), a dedicated Hall signal interface, DMA, a watchdog timer, and up to 25 GPIOs. The series offers high reliability, high integration, and excellent ESD and burst immunity, helping to reduce end-product size and BOM cost. The on-chip op-amps and comparators support single-shunt or dual-shunt current sensing topologies; the op-amp inputs incorporate clamp protection circuits, and together with a patented ADC variable-gain technique, the device handles wide dynamic range currents while maintaining sampling accuracy across both high and low current levels.

Applications

• Sensored BLDC motor control
• Sensorless BLDC motor control
• Sensored FOC control
• Sensorless FOC control
• Stepper motor control

Key features

• 48MHz 32-bit Cortex-M0 core with hardware division co-processor
• Low-power sleep mode with 30 uA sleep current
• Operating temperature range: -40°C ~ 105°C
• Single supply voltage: 2.5V ~ 5.5V
• Excellent ESD and burst immunity
• Three memory configurations: 16kB Flash, 16kB Flash + 16kB ROM, or 32kB Flash, with Flash read protection
• 4kB RAM
• Built-in 4MHz high-accuracy RC oscillator with ±1% accuracy over full temperature range
• Built-in 64kHz low-speed clock for low-power modes
• Internal PLL supporting up to 48MHz clock
• Integrated 1x UART, 1x SPI, 1x I²C
• General-purpose 16/32-bit timer with capture and edge-aligned PWM support
• Dedicated motor control PWM module with 6-channel PWM output and independent dead-time control
• Dedicated Hall signal interface with speed measurement and debouncing
• 4-channel DMA
• Hardware watchdog
• Up to 25 GPIOs
• Integrated 12-bit SAR ADC: 1.2Msps sample and conversion rate, 11 channels
• Integrated 2x op-amps, configurable as differential PGA
• Integrated 2x comparators
• Integrated 8-bit DAC usable as internal comparator input
• Built-in 1.2V voltage reference with 0.5% accuracy
• Built-in low-power LDO and power monitoring circuit
• Built-in high-accuracy, low-drift high-frequency RC oscillator
• Integrated 2x high-speed op-amps supporting single-resistor/dual-resistor current sensing topology
• Voltage clamp protection on op-amp input ports for direct MOSFET on-resistance current sensing
• ADC variable-gain technology combined with high-speed op-amps for wider current dynamic range, ensuring accuracy across both low and high current sensing
• High integration for reduced BOM cost
• IEC/UL60730 functional safety certification support