M030G/M031G Optical Communication Series

The M030G/M031G series of 32-bit microcontrollers are designed for optical modules, which have three main characteristics for general optical modules: (1) temperature sensitivity, (2) small size, and (3) communication using I²C interface. Therefore, both M030G and M031G series come with a built-in temperature sensor with ±2 °C accuracy, offering a choice of QFN24 and QFN33 small package options. Additionally, they are equipped with two sets of I²C interfaces supporting 1 MHz slave mode and clock-stretching functionality.

In emerging wavelength division multiplexing scenarios, optical modules require support for the add/drop function, which involves overlaying Optical Add/Drop Multiplexing (OAM) messages on the original signals for transmission to achieve OAM functionality. Therefore, the M031G series supports add/drop functionality for optical modules. It incorporates a hardware Manchester encoder with CRC support for modulation and demodulation of low-dispersion frequency signals. It also includes a DAC with automatic data generation functionality that can produce smooth sine waves at a frequency of 500 KHz for use as add/drop output. Whether for general optical modules or add/drop enabled ones, Nuvoton provides suitable solutions.

Key features of the M030G/M031G series for optical module solutions:

• Hardware Manchester encoder*
• DAC with automatic data generation functionality*
• Temperature sensor accuracy of ±1.6 °C (@0 ~ 70 °C) / ±2 °C (@ - 40 ~ 105 °C)
• Small packages: QFN24 (3x3mm) / QFN33 (4x4mm)
• I²C support for 1 MHz slave mode and clock-stretching
• Target Application: Optical communication modules

M0A21/M0A23 Automotive and Industrial Grade Series

The M0A23 series, based on Arm® Cortex®-M0, is a 32-bit microcontroller designed for small package sizes, offering high flexibility with configurable digital peripherals and extensive analog interfaces. It operates in a wide temperature range up to 125 ℃ and a voltage range of 2.4V to 5.5V. The series provides CAN 2.0B and LIN interfaces, catering to applications such as 24 GHz millimeter-wave radar, Battery Management Systems (BMS), automotive lighting, windows, and power seats.

The NuMicro® M0A23 series comes in SSOP20 and TSSOP28 packages, suitable for compact designs. It supports up to 18 IO pins in SSOP20 and up to 26 IO pins in TSSOP28, configurable as digital peripherals like UART, SPI, PWM, etc. The series also offers rich analog features, including up to 17 channels of 12-bit 500k SPS ADC, a 5-bit DAC, comparators (ACMP), low voltage reset (LVR), and Brown-Out Detection (BOD) functions, reducing the need for external components and minimizing product size.

With a maximum operating frequency of 48 MHz, hardware divider, Flash memory ranging from 16 KB to 512 KB, and SRAM from 2 KB to 96 KB, the M0A23 series is equipped to handle a variety of automotive and industrial applications.

Target applications:

• 24 GHz millimeter-wave radar
• Battery Management Systems (BMS)
• Automotive lighting
• Windows
• Power seats
• Intelligent power modules

M031/M032/M031BT/M032BT General-Purpose Series

The M031/32/31BT/32BT series is a 32-bit microcontroller based on the Arm® Cortex®-M0 CPU, featuring a 32-bit hardware multiplier/divider. It operates at a voltage range of 1.8V to 3.6V, supports 5V I/O, and operates in a temperature range of -40~105 ℃. The series can achieve operating frequencies of up to 48/72 MHz. It provides a solution for applications requiring a fast 2 MSPS conversion rate with a 12-bit ADC, including comparators and 96/144 MHz PWM control. This allows precise conversion of voltage, current, and sensor data, along with rapid response and control of external devices.

The M031/M032 series offers a range of peripherals, including Universal Serial Control Interfaces (USCI) that can be configured as UART/SPI/I²C, up to 10 UART channels, 4 SPI channels, 4 I²C channels, and a 1-wire UART interface for data communication between master and slave devices.

The series supports features such as single-pin half-duplex mode for UART serial communication at speeds up to 6 Mbps. It also supports wake-up from power-down mode and can operate at 9600 bps using an internal 4 kHz high-precision RC oscillator, maintaining data reception even in power-down mode.

With high-speed SPI equipped with 4 x 32 bytes FIFO, supporting Master 24 MHz or Slave 16 MHz, and Tx/Rx PDMA functionality, the M031/M032 series is well-suited for various applications.

The M031/M032 series provides Flash memory ranging from 16 KB to 512 KB and SRAM from 2 KB to 96 KB.

Target applications:

• Internet of Things (IoT) devices
• Bluetooth personal care appliances
• Logistics management
• Portable medical devices
• Laser rangefinders
• Air quality detectors/purifiers
• LCD panel controllers
• IoT sensors
• Mini printers
• Gaming keyboards and mice
• Wireless charging (WPC) devices

M051 General-Purpose Series

The M051 series is a Cortex™-M0 32-bit microcontroller series characterized by a wide voltage operating range of 2.5V to 5.5V and a working temperature range of -40 ℃ to 105 ℃. It can achieve operating frequencies of up to 50 MHz and features a built-in 22.1184 MHz high-precision RC oscillator with ±3% accuracy across the temperature and voltage range of -40 ℃ to 105 ℃ and 2.5V to 5.5V, respectively. Additional features include Data Flash, undervoltage detection, rich peripherals, multiple sets of serial transmission interfaces, and high noise immunity (8 kV ESD/4 kV EFT). It also supports in-system programming (ISP), in-circuit programming (ICP), and in-application programming (IAP). The series comes in packages such as QFN33, LQFP48, LQFP64, and LQFP100.

Target applications:

• Industrial control
• Access control systems/alarms
• Temperature sensing devices
• DC brushless motor applications
• Smart meters

Mini51 General-Purpose Series

The Mini51 series is a Cortex®-M0 32-bit microcontroller series characterized by a wide voltage operating range of 2.1V to 5.5V and a working temperature range of -40 ℃ to 105 ℃. It features a built-in 22.1184 MHz or 48 MHz high-precision RC oscillator with ±1% accuracy at 25 ℃ and 5V. The series includes Data Flash, undervoltage detection, rich peripherals, various serial transmission interfaces, and high noise immunity (8 kV ESD/4 kv EFT). It supports in-system programming (ISP) and in-circuit programming (ICP) functions and comes in packages like QFN20, LQFP32, and LQFP48.

Target applications:

• Industrial control
• Access control systems/alarms
• Temperature sensing devices
• DC brushless motor applications
• Smart meters

Conclusion

Nuvoton provides a comprehensive range of microcontrollers catering to various application needs, including optical communication, automotive, industrial, and general-purpose use. With features like high-speed communication interfaces, analog-to-digital conversion, PWM control, and extensive operating temperature ranges, these microcontrollers can meet the demands of challenging and diverse scenarios. Whether it's for IoT devices, automotive systems, industrial machinery, or other applications, the Nuvoton microcontroller series offers a solution.