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Product attributes Property Value
Manufacturer Nuvoton Technology Corporation
Product Series NuMicro™ NUC126
Packaging | Tray
Core Processor ARM® Cortex®-M0
Core Size 32-Bit Single-Core
Speed 72MHz
Connectivity I2C, SPI, UART/USART, USB
Peripherals Brown-out Detect/Reset, DMA, I2S, LVR, PWM, RTC, UCID
Number of I/O 49
Program Memory Size 128KB (128K x 8)
Program Memory Type FLASH
EEPROM Size 6K x 8
RAM Size 20K x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 15x12b
Oscillator Type External, Internal
Operating Temperature -40°C ~ 105°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Supplier Device Package 64-LQFP (7x7)
Package / Case 64-LQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The NUC126SE4AE from Nuvoton is an ARM Cortex-M0 MCU with 128KB flash and 20KB RAM in a 64-LQFP package. Operating at 72MHz, it features DMA, I2S, PWM, RTC, and UCID. With 1.8V-5.5V supply and -40°C to 105°C range, it suits complex embedded designs requiring more I/O.

  • 64-pin LQFP: More GPIO for peripheral interfaces.
  • 72MHz Cortex-M0: High throughput for real-time control.
  • DMA + I2S: Efficient audio/data streaming.
  • Extended temperature: Reliable in extreme conditions.

Advanced Motor Control

64-pin package provides more PWM channels for multi-axis systems.

Audio Interfaces

I2S and DMA enable high-fidelity audio streaming.

Industrial Networking

128KB flash supports protocol stacks for fieldbus or Ethernet bridges.

Medical Monitoring

High-speed ADC (via PWM timing) and 105°C rating for patient devices.

Smart Agriculture

RTC and wide voltage range support outdoor sensor nodes.

Test Equipment

72MHz processing with 20KB RAM for waveform generation.

Q: What is the package size?
A: 64-LQFP.
Q: How much flash memory is available?
A: 128KB.
Q: What is the maximum clock speed?
A: 72MHz.
Q: Does it support I2S audio?
A: Yes, plus DMA, PWM, RTC, and UCID.
Base Product Number : NUC126SE4AE
128KB Flash 20KB RAM 32-bit MCU ARM Cortex-M0 Audio DMA I2S Industrial LQFP-64 Nuvoton PWM RTC
Q: What is the package size?
A: 64-LQFP.
Q: How much flash memory is available?
A: 128KB.
Q: What is the maximum clock speed?
A: 72MHz.
Q: Does it support I2S audio?
A: Yes, plus DMA, PWM, RTC, and UCID.