Nuvoton Technology has released the M433 CAN/USB series microcontroller, featuring a multifunctional and cost-effective M4 core. This series is widely applied in various scenarios, including motor control, gateways, Battery Management Systems (BMS), portable inverter power supplies, and sensor control.

M433 Series Features and Selection:

The NuMicro^® M433 CAN/USB FS series is a 32-bit microcontroller equipped with an Arm^® Cortex^®-M4F core, supporting DSP instructions and a Floating Point Unit (FPU). It comes with 128 KB eFLASH and 64 KB SRAM and supports hardware parity check.

Operating at a frequency of up to 144 MHz, the M433 series supports a wide voltage range from 1.7 V to 3.6 V. It also offers an extended operating temperature range from -40°C to 105°C.

The M433 series provides rich interface resources, including two CAN interfaces, USB FS with OTG, up to 18 channels of 16-bit PWM, four UARTs, two sets of SPI/I²S, one Quad-SPI, two I²C interfaces, two analog comparators, and up to 16 channels of 12-bit SAR ADC, supporting up to 5M SPS.

The M433 series is available in two package options: LQFP48 and LQFP64 (7x7).

Motor Control Board Applications:

Based on the M433/M483 series, Nuvoton provides development boards and software algorithms for stepper motors and servo three-phase motor control, helping customers quickly complete product designs.

• Speed Range: 50-3000 rpm
• Microstepping (Maximum/Configurable): 51200/360°
• Key Control Module: Acceleration, Deceleration
• Pulse Control Module: Acceleration, Deceleration
• Forward/Reverse Control
• Optocoupler Isolated Pulse Control Signals, Direction Signals, Enable Signals, with Differential Input Interface for Motor End Encoders
• RS232/RS485 Communication Interface
• CAN 2.0B Communication Interface
• Protection Features: Overcurrent, Overload, Overvoltage, Undervoltage, Overspeed, Overheat

BMS Control Board Applications:

Based on the M433/M483 series and Nuvoton's battery AFE chip KA49522, Nuvoton provides BMS control development boards and software algorithms to assist customers in quickly completing product designs.

• Battery Monitoring AEF IC (KA49517A/522A): Capable of monitoring 17/22 battery cells connected in series
• High-Precision Wide Temperature and Wide Voltage Battery Sampling (mV): +5.0
• High-Speed/Low-Speed 16-bit Current Sampling with Accuracy up to 1%
• High/Low-Side MOSFET Driver Control
• Internal and External Balancing, Internal Balancing Current up to 50mA
• Multiple Self-Diagnosis Modules to Ensure System Safety
• Shutdown Power Consumption as Low as 1uA