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The NUC126SE4AE microcontroller based on the ARM® Cortex®-M0 core operates at up to 72 MHz. With its crystal-less USB 2.0 FS interface, it is able to generate precise frequency required by USB protocol without the need of external crystal. It features adjustable VDDIO pins for specific I/O pins with a wide range of voltage from 1.8V to 5.5V for various operating voltages of external components, a unique high-speed PWM with clock frequency up to 144 MHz for precision control, and an integrated hardware divider to speed up the calculation for the control algorithms. Apart from that, the NUC126SE4AE also integrates SPROM (Security Protection ROM) which provides a secure code execution area to protect the intelligent property of developers. The NUC126SE4AE is ideal for industrial control, motor control and metering applications.

The NUC126SE4AE supports the wide voltage range from 2.5V to 5.5V and temperature ranging from -40℃ to 105℃, up to 128 Kbytes of Flash memory, 20 Kbytes of SRAM as well as 4 Kbytes of ISP (In-System Programming) ROM in 64-pin package. It supports high immunity of 8KV ESD (HBM)/4KV EFT. It is also equipped with plenty of peripherals such as USB interface, timers, watchdog timers, RTC, PDMA, EBI, UART, smart card interface, SPI, I²S, I²C, GPIO, up to 12 channels of 16-bit PWM, up to 15 channels of 12-bit ADC, analog comparator, temperature sensor, LVR (Low Voltage Reset), BOD (Brown-out Detector), 96-bit UID (Unique Identification), and 128-bit UCID (Unique Customer Identification).

Target Application:
Industrial Control, Motor Control, Metering Application, etc.

Key Features:

  • Core

    - ARM Cortex®-M0

    - Max frequency up to 72 MHz

    - Operating voltage: 2.5V to 5.5V

    - Operating temperature: -40℃ to 105℃

  • Memory

    - 128 KB Flash

    - 20 KB SRAM

    - Independent 4KB ISP ROM

    - 2 KBSPROM(Security Protection ROM)

    - Supports program update by:

    ISP (In-System Programming)

    ICP (In-Circuit Programming)

    IAP (In-Application Programming)

  • ADC

    - Supports 12-bit SAR ADC of up to 15 channels

    - Conversion rate up to 800K SPS at 5V

  • PWM (Pulse Width Modulation)

    - Supports maximum clock frequency up to 144 MHz

    - Supports 16-bit resolution PWM counter

    - Up to 12 channel PWM outputs or 6 complementary paired PWM outputs

    - Period/duty trigger ADC function

  • Connectivity

    - USB interface

    - Up to 3 sets of USCI

    (Configured as UART or SPI or I²C)

    - Up to 3 sets of UART

    - Up to 2 sets of SPI[I2S],
    (Configured as SPI or I2S)

    - Up to 2 sets of SC[UART],
    (Configured as SC or UART)

    - Up to 2 sets of I²C

    -16/8-bits EBI interface

  • Clock Control

    - 48 MHz internal RC (HIRC48)

    - 10 KHz internal RC (LIRC)

    - 22.1184 MHz internal RC oscillator

    (HIRC, 1% accuracy at 25℃, 5V)

    - 32.768 KHz external crystal (LXT)

    - 4 to 24 MHz external crystal oscillator (HXT)

  • Supports independent VBAT pin for RTC

Data Sheet

  • Data Sheet

  • File name Version Update Download
  • DS_NUC126_Series_EN_Rev1.04 1.04  2018/08/21
  • Software

  • File name Version Update Download
  • NuTool-PinView_V3.00.6909 3.00.6909  2019/06/14
  • Nu-Link_IAR_Driver_V3.00.6909 3.00.6909  2019/06/14
  • Nu-Link_Keil_Driver_V3.00.6909 3.00.6909  2019/06/14
  • Nu-Link_Command_Tool_V3.00.6909 3.00.6909  2019/05/07
  • NUC126_Series_BSP_CMSIS_v3.00.003 3.00.003  2018/02/01
  • NuMicro_ISP_Programming_Tool_V2.06 2.06  2019/03/14
  • Nuvoton_NuGang_Programmer_V7.02 7.02  2016/11/22
  • Technical Reference Manual

  • File name Version Update Download
  • TRM_NUC126_Series_EN_Rev1.03 1.03  2018/08/21
  • Development Tool

  • File name Version Update Download
  • HW_NUC121_Gaming_LED_Lighting_V1.0 1.0  2018/07/27
  • HW_NuMaker_PFM_NCU126_MotherBoard_V1.0 1.0  2018/07/31
  • HW_NuTFT-SPI_320x240 Daughter Board_V1.3 1.3  2018/07/31
  • Online Training

  •   Name Published date Online certificate
  • 2017新唐科技NuMicro微控制器新產品與應用研討會_新唐科技全球市場發展策略及願景 2017/12/01
  • 2017新唐科技NuMicro微控制器新產品與應用研討會_NuMicro高性能新產品介紹 2017/12/01
  • 2017新唐科技NuMicro微控制器新產品與應用研討會_基於Arm Mbed之物聯網全面解決方案&NuMicro創新方案 2017/12/01
  • User Manual

  • File name Version Update Download
  • UM_NuTiny-SDK-NUC126_EN_V1.00 1.00  2017/05/23
  • UM_NuMaker-PFM-NUC126_Kit_EN_Rev1.01 1.01  2018/08/20


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Part No. Check Disty Flash SRAM I/O Timer UART SPI I2C USB PWM RTC PDMA Comparator Touch Key Audio Mic. Audio Speaker CRC ISP /ICP /IAP Package Status Data Flash ISP ROM ISO-7816-3 CAN LIN EBI I2S/ AC97 DAC ADC Operating Temp. Range (°C ) PS2 LCD IRC VBAT Supply OPA
NUC126SE4AE Check Disty None 128K 20K 49 4*32-bit 3 2 2 1 12 Y 5 2 - - - Y Y LQFP64(7x7mm)   Configurable 4K 2 - - 2 - 15*12-bit -40 to +105 - - 10kHz, 22MHz 48MHz Y -

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