LKS32AT086_数据手册_v1.2

LKS32AT086_数据手册_v1.2 1 Overview 1.1 Function LKS32AT086N8Q9(B) is a 32-bit MCU targeting automobile applications. With the three-phase full-bridge bootstrap gate driver, it can directly drive six N-channel MOSFETs. Features ➢ 96MHz 32-bit Cortex-M0 core ➢ Customized instruction set DSP for motor control ➢ Ultra low power sleep mode, 10uA sleep current with MCU low low power consumption ➢ Three-phase full-bridge bootstrap gate driver ➢ Automotive temperature range ➢ High ESD and group pulse reliability ➢ Pass AEC-Q100 Grade 1 testing certification ⚫ Memory ➢ 64kB Flash with optional encryption to prevent hex theft ➢ 8kB RAM ⚫ Operating Conditions ➢ Dual power supply. The MCU is powered by 2.2V ~ 5.5V voltage(B-version chip is powered by 3.0V~5.5V),with an integrated internal LDO for the digital circuit. Drive module power supply please refer to Chapter 22. ➢ Operating Conditions: -40~125℃ ⚫ Clock ➢ 4MHz built-in high-precision RC oscillator, with an accuracy of ± 1% at -40 ~ 105 ℃ and ± 1.5% at -40 ~ 125 ℃ ➢ 32KHz built-in low-speed clock for low-power mode ➢ Operating on an external 4MHz crystal is available ➢ Internal PLL up to 96 MHz ⚫ Peripheral Modules ➢ Two UARTs ➢ One SPI, support master-slave mode ➢ One IIC, support master-slave mode ➢ One CAN-bus, recommended to use external crystal as reference clock ➢ Two 16-bit standard timers (TIM), support capture and edge-aligned PWM function ➢ Two 32-bit standard timers (TIM), support capture and edge-aligned PWM function; support orthogonal code input, CW/CCW input, and pulse&symbol input ➢ Motor control PWM module, supports 8 channels/4 pairs of PWM waveform output, independent dead-band control ➢ Hall signal interface with speed measurement and debouncing function ➢ Hardware watchdog ➢ 4 Groups of 16bit GPIO at the most. P0.0/P0.1/P1.0/P1.1 could be used as wake-up source。 P0.15 ~ P0.0 could be used as external IRQ source ⚫ Analog Modules ➢ 12bit SAR ADC, simultaneous double sampling, 3Msps sampling and conversion rate, up to 13 analog signal channels ➢ Four operational amplifiers. Differential PGA mode is available. ➢ Two comparators. Hysteresis mode is available. ➢ 12bit digital-to-analog converter (DAC) ➢ ± 3 ℃ built-in temperature sensor ➢ 1.2V 0.8% built-in linear regulator ➢ Low-power LDO and power monitoring circuit ➢ RC oscillator with high precision and low temperature drift ➢ Crystal oscillator circuits 1.2 Performance Advantages ➢ High reliability, high integration level, small package size, saving BOM cost; ➢ Integrated 4 channels high-speed OPAs and 2 channels comparators, meeting the needs of different system topology like single resistance/double resistance/three resistance current sampling; ➢ High-speed OPA is integrated with over-voltage protection circuit, which allows high-voltage common-mode signals to be input, which could support direct current sampling of MOSFET resistance with the simplest circuit topology. ➢ Via a proprietary technique, ADC and high-speed OPA could cooperate well, making them able to handle a wider current dynamic range, while ensuring the sampling precision of high-speed small current and low-speed hight current; ➢ The control circuit is simple and efficient, with strong anti-interference ability, stable and reliable; ➢ Three-phase full-bridge bootstrap gate driver is integrated; ➢ Supports IEC/UL60730 functional safety certification; Applicable to control systems such as inductive BLDC/non-inductive BLDC/inductive FOC/non-inductive FOC and stepper motors, permanent magnet synchronous and asynchronous motors. 3 Pin Assignment 3.1 Pin Assignment and Pin Function Description 3.1.1 Special Notes The red pin in the pin assignment figures below has built-in pull-up resistors: RSTN has a 100kΩbuilt-in pull-up resistor, which is enabled automatically after power-up. SWDIO/SWCLK has a 10kΩ built-in pull-up resistor, which is enabled automatically after power-up. The remaining red pins have 10kΩ built-in pull-up resistors, which could be software-enabled. UARTx_TX(RX): UART TX and RX support interchange. When the second function of GPIO is selected as UART, and GPIO_PIE is input enabled, it can be used as UART_RX; when GPIO_POE is enabled, it can be used as UART_TX. Generally, the same GPIO does not enable input and output at the same time, otherwise the input PDI will receive the data sent by the PDO. SPI_DI(DO): The DI and DO of SPI can also be interchanged. When the second function of GPIO is SPI, and GPIO_PIE is input enable, it can be used as SPI_DI; when GPIO_POE is output enable, it can be used as SPI_DO. Generally, the same GPIO does not enable input and output at the same time, otherwise the input PDI will receive the data sent by the PDO.