Introduction

The NuMicro® MA35D1 series is a heterogeneous multi-core microprocessor targeted to high-end edge IIoT gateway. It is based on dual 64-bit Arm® Cortex®-A35 cores with speed up to 1 GHz, and one 180 MHz Arm® Cortex®-M4 core.

The MA35D1 series also offers LQFP and BGA packages stacked with the DDR2/DDR3L SDRAM and density up to 512 MB to significantly reduce PCB layer, size and electromagnetic interference (EMI).

The MA35D1 series is a trusted system for IoT products' security requirements. It includes several advanced security mechanisms such as Nuvoton Trusted Secure Island (TSI), an isolated secure hardware unit, TrustZone, secure boot, tamper-detection, built-in cryptographic accelerators with AES, SHA, ECC, RSA, SM2/3/4, and a TRNG, as well as Key Store and OTP memory. All the security operations are performed in the TSI to protect sensitive and high-value data. The features also satisfy customers in IEC 62443 certification requirements.

For high-end edge IIoT gateway requirements, the MA35D1 series integrates PDMA to increase the system performance. The PDMA can access system memory directly without the intervention of the CPU. Also, the MA35D1 series provides multiple advanced and high-speed connection interfaces, such as Gigabit Ethernet, SDIO3.0, USB 2.0 HS, and CAN FD, for edge gateway and new energy applications.

For HMI applications, the MA35D1 series provides a LCD display controller with the resolution up to 1920x1080 at 60 FPS, a 2D graphic engine, a JPEG and a H.264 decoder integrated for better graphical HMI effects and video playback.

• MA35D1Series

Evaluation

Nuvoton provide EVB and sample code, which can meet a wide range of specific application evaluations, and help customers shorten evaluation and development time. Please refer to the following steps to start the quick evaluation.

1. Choice an EVB and find the resource

You can find the user manual, schematic and hardware resource in the pages 

• NuMaker-IoT-MA35D1-A1/ Buy
• NuMaker-HMI-MA35D1-S1/ Buy

2. Start evaluation

• Building up the development environment, cross compiling a program and execution on EVB

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Development Ecosystem

MA35D1 includes a complete development ecosystem, including hardware debugger, software tools, BSP, sample code, and development environment, please refer to the following for details.

	Industrial-grade Low-power MCU	The wide supply voltage ranges from 1.75V to 5.5V and operating temperature ranges from -40℃ to 105℃, NuMicro M251/M252 Series provides a rich package types from 20 pin to 128 pin, and 5 power modes for different operating scenarios. Integrating RTC with independent VBAT to support low power mode, low power UART supports transmission rate up to 9600 bps in power-down mode to make power management much efficiently in battery-powered devices. In terms of low power consumption, NuMicro M251/252 Series provide 138 μA/MHz in normal run mode. Power-down mode current with RTC on is down to 2.5 μA and Deep power-down current is less than 1.4 μA.
	Nuvoton Patented “PSIO”	NuMicro M251/ M252 Series provides up to eight channels of Nuvoton Patented Programmable Serial I/O (PSIO), accompany with PDMA hardware could realize several proprietary serial interfaces, such as DMX512, HDQ, 1-wire, Microwire, and programmable encoder, no matter the standard interface or proprietary interface can be realized by PSIO interface, which can not only adding the feasibility of proprietary interface but also shorten the complexity of program but to ease the loading from CPU.
	Powerful Interface	Up to six pins of Voltage Adjustable Interface (VAI), External Bus Interface (EBI), Universal Serial Control Interface (USCI), QSPI, SPI/I²S, I2C, Smart Card Interface (ISO-7816-3), Watchdog timer, RTC, and up to 24 channels of PWM are provided. Those peripherals make it highly suitable for connecting comprehensive external modules. For high performance analog features, it integrates up to a 16-channel 12-bit 880 kSPS SAR ADC to sample the sensor data without delay, one Operational Amplifier (OPA) to amplify small signal for motor control, built-in 5 levels of internal voltage reference to provide precise voltage to ADC and ACMP, one 12-bit 1 MSPS voltage type DAC, and two rail-to-rail analog comparator (ACMP) to enhance product competitivity and reduce both external components and form factor.
	Chip Security	To protect customer’s intellectual property, NuMicro M251/M252 Series provides several mechanisms, by using flash lock bit can prevent program from being read out by external programmer, built-in one eXecute-Only-Memory (XOM) region and four Memory Protection Unit (MPU) to protect critical codes, and one Tamper detection pin to detect the state transition status. NuMicro M251/M252 Series also equipped with 96-bit UID ( Unique Identification ) and 128-bit UCID ( Unique Customer Identification ).  Besides, Nuvoton provides safety library which can compliant with IEC-60730 requirement for Class B safety function to raise safety function for customers’ end products.
	Target Application	NuMicro M251/M252 series fits the low-power devices in the Industrial internet of things (IIoT) application. Firstly, the whole series supports 5V operating voltage and high immunity performance with 7KV ESD and 4.4KV EFT. Besides, NuMicro M251/M252 series offers five different power modes to extend the battery life of the IoT devices. Furthermore, there are three types of chip protection mechanism and rich periphiral to connect multiple sensors, which beneficial of IoT application.
	Development Platform	Moreover, Nu-Link and Nu-Link-2-Pro debuggers are available for evaluation and product development. Third-Party IDEs such as Arm Keil MDK (free-to-use of NuMicro M23-based project), IAR EWARM, and NuEclipse IDE with GNU GCC compilers are also supported. The latest NuTool-Code-Generator is available to generate the initial program automatically.

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Support

• Learning MA35D1
• NuForum, 21iC
• MA35D1 FAQ
• Github, Gitee
• Sales and Agent Support

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