Smart Home Audio(325)



The NuMicro® M433LE8AE is a high performance, low power microcontroller powered by the Arm® Cortex®-M4F core with DSP instruction and single-precision floating-point unit (FPU) extension. The M433LE8AE runs at speeds up to 144 MHz, and the power consumption in the deep power-down mode drops to 350 nA, offering excellent energy efficiency tailored for IoT, industrial, and consumer applications.

The NuMicro® M433LE8AE supports operating voltage from 1.8V to 3.6V, and temperature from - 40℃ to 105℃. It provides up to 128 KB Flash memory for code storage and 64 KB SRAM for run time operation. In order to reduce the data access overhead of CPU core to peripherals, 1 set of 9-channel peripheral direct memory access (PDMA) is provided.

The M433LE8AE supports plenty of peripherals, including 2 sets of CAN, USB FS OTG, up to 18 channels of 16-bit PWM, 4 sets of UART, 2 sets of SPI/I²S, 1 set of Quad-SPI, 2 sets of I²C, 1 set QEI and 1 set capture.

The M433LE8AE also provides rich analog peripherals including 2 sets of analog comparators, up to 16 channels of 12-bit SAR ADC.

For the development, Nuvoton provides the NuMaker-M433SE evaluation board, and Nuvoton Nu-Link debugger. The 3rd Party IDE such as Keil MDK, IAR EWARM, Eclippse IDE with GNU GCC compilers are also supported.

The NuMicro M433LE8AE is suitable for a wide range of applications such as:

  • Gaming market such as Keyboard, mouse
  • Industrial market such as CAN/USB/UART/SPI Conversion Box
  • Consumer Market such as Local dimming


Operating Characteristics
  - Voltage range: 1.8V to 3.6V
  - Temperature range: -40°C to 105°C
  - Up to 144 MHz ARM Cortex-M4F
  - DSP instruction set
  - Single-precision floating point instructions (FPU)
  - Memory Protection Unit (MPU) with eight memory regions
  - Up to 128 KB Flash memory
  - 4 KB user-defined loader (LDROM)
  - Up to 64 KB SRAM including hardware parity check
Peripheral Direct Memory Access (PDMA)
  - 1 set of PDMA, each with 9 channels
  - Channel can be operated by software trigger, UART, SPI, EPWM, TIMER, ADC, ACMP and I²C
  - 4 to 24 MHz crystal oscillator
  - 32.768 kHz crystal oscillator for RTC
  - Internal 48 MHz RC oscillator
  - Internal 12 MHz RC oscillator
  - Internal 10 kHz RC oscillator
  - Internal PLL up to 200 MHz
Power Management
  - Active: 132 μA/MHz at 25°C/3.3V (peripheral off)
  - Normal Power-down (NPD): 230 μA
  - Standby Power-down (SPD) w/o RAM retention: 1.5 μA
  - Deep Power-down (DPD): 0.35 μA
  - Supports wake up from Normal Power-down mode by: WDT, I²C, Timer, UART, GPIO, EINT, ACMP, USB FS and BOD
Timer & PWM
  - Four 32-bit timers
  - Up to 6 Enhanced PWM with six 16-bit counters
  - Up to 12 Basic PWM with two 16-bit counters
  - One 24-bit count-down SysTick timer
  - One watchdog timer
  - One window watchdog timer
  - Up to 1 set of enhanced quadrature encoder interfaces (EQEI)
  - Up to 1 set of 24-bit, 3-ch enhanced input capture timer/counter unit
Analog Peripheral
  - 1 set of 12-bit, up to 16-ch, 5 Msps SAR ADC
  - 2 sets of analog comparators
Communication Interface
  - Up to 4 sets of UART interfaces with IrDA (Support LIN in UART0 and UART1)
  - Up to 2 sets of I²C interfaces with SMBus/PMBus (Up to 3.4 Mbps)
  - Up to 2 sets of SPI/I²S interfaces (SPI up to 72 MHz in Master mode)
  - Up to 1 set of Quad-SPI interface (Up to 72 MHz in Master mode)
  - Up to 2 set of CAN 2.0B interfaces
Advanced Connectivity
  - USB 2.0 Full Speed OTG/Host/Device controller with on-chip PHY
Up to 41 I/O pins with interrupt capability
IEC60730-1 Class B
  - Supports certified IEC60730-1 Class B Software Test Library (STL)
Development Platform Support
  - Arm Keil RVMDK and IAR EWARM IDE
  - Free GNU compiler with Eclipse IDE support
  - ICP (In Circuit Programmer) support for updating internal code via Nu-Link debugger
  - ISP (In System Programmer) support for updating code through UART, SPI, I²C, RS-485 peripheral interfaces
  - Pin Viewer for real time monitoring the status of all I/O pins
  - PinConfigure tool for pin assignment, initial code generation and OrCAD/Protel part generation
96-bit Unique ID (UID)
128-bit Unique Customer ID (UCID)
Pin Count 48
 Type  LQFP
I/O Pin 41
Lead Pitch
7 x 7 x 1.4
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