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Nuvoton Launches NuMicro® Industrial Grade MS51 Series Microcontroller

Hsinchu, Taiwan2019/02/27-Nuvoton Technology Corp., a leading microcontroller provider, announces the NuMicro® enhanced 1T 8051 based MS51 series microcontroller. NuMicro® MS51 series provides flexible internal clock system adjustable from 10 kHz to 24 MHZ operating speed, 24 mA high driving capability for each IO pin, high immunity such as 8 kV ESD and 4.4 kV EFT to ensure reliability even in harsh conditions. Operates at voltage range 2.5 V ~ 5.5 V and - 40 ℃ ~ + 105 ℃ industrial temperature grade. This series offers a range of memory with 8 / 16 / 32 KB Flash memory and 1 / 2 KB SRAM, provides packages types from 10 to 32 pins.


NuMicro® MS51 series offers several enhanced features, such as up to 15 channels of 12-bit ADC and provides rich peripherals such as 2 sets of UART; up to 3 sets of ISO7816-3 interface; 1 set of I²C, 1 set of SPI, up to 12 channels of standalone PWM with independent timer where high solution is needed.


To protect customer’s intellectual property, the MS51 series provides several mechanisms, by using flash lock bit can prevent program from being read out by external programmer, 128 Bytes SPROM ( Secure Protection ROM ), 96-bit UID ( Unique Identification ), 128-bit UCID ( Unique Customer Identification ).  


The NuMicro® MS51 series provides large portfolio with its essential and effective peripherals, which is suitable for applications like LED lighting, stepper motors, power supplies…etc.

Development Tools
Nuvoton provides easy-to-use tools, Nu-Link, which supports advanced debug function, PinConfig for multi-function pin setting, PinView for showing pin status in real time, BSP driver and sample codes. The IDE supports Keil C-51 and IAR EW8051, which can debug, trace and analyze your program on the development board. NT‐MS51 evaluation board is available online now for 100% emulation and on‐board debugging.

Packaging and Availability
The NuMicro® MS51 series with 16KB flash microcontrollers are MP now, offers several packages including TSSOP20 and QFN20.

The MS51 series microcontrollers and its development tools can be ordered from Nuvoton’s official online store:

About Nuvoton Technology
Nuvoton Technology Corporation ( NTC ) was founded to bring innovative semiconductor solutions to the market. NTC was spun-off as a Winbond Electronics affiliate in July 2008 and became public in September 2010 on the Taiwan Stock Exchange ( TSE ). Nuvoton Technology focuses on development of analog / mixed signal, microcontroller, cloud and computing products and has strong market share in Industrial, Consumer and Computer markets. Nuvoton owns a wafer fab, featuring customized processes for analog, power and MCU products. Besides in-house IC products, the wafer fab also provides part of its capacity for foundry services. Nuvoton Technology provides products with a high performance/cost ratio for its customers by leveraging flexible technology, advanced design capability and integration of digital and analog technologies. Nuvoton values long term relationships with its partners and customers and is dedicated to continuous innovation of its products, processes and services. The company has established subsidiaries in the USA, China, Israel and India to strengthen regional customer support and global management. For more information, please visit

*Note: Nuvoton and NuMicro are registered trademarks of Nuvoton Technology Corporation. All other trademarks and copyrights mentioned herein are the property of their respective owners.

Product Contact

Ryan Huang

Director of Microcontroller Marketing Div.

Nuvoton Technology Corporation


Tel: +886-3-5770066 ext. 38024


News Contact

Carol Chang

Nuvoton Technology Corporation


Tel: +886-3-5770066 ext. 33123

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