M4 Standard

The NuMicro® M481 Base series, developed by Nuvoton, is a high-performance, low-power microcontroller designed for IoT devices, data collectors, and other applications. It is powered by the Arm® Cortex®-M4F core with DSP extension and can operate at speeds of up to 192 MHz, offering 1.25 DMIPS per MHz. Its dynamic low-power consumption is 175 µA/MHz. The M481 Base series features 512/256/128 KB of dual bank Flash memory, which supports Over-The-Air (OTA) firmware upgrades, and 160/128/64 KB of embedded SRAM, including 32 KB cache for quicker SPI Flash code execution. Secure Boot functionality is provided by a factory pre-loaded bootloader, ensuring code integrity in the embedded Flash memory. The built-in Secure Protection ROM offers a secure space for storing confidential code or data, while the integration of One-Time Programmable ROM assists with product life-cycle management. The microcontroller operates within a voltage range of 1.8V to 3.6V and has an industrial temperature range of -40 °C to +105 °C. It features a wealth of communication interfaces, including high-speed UART/SPI/I²C/PWM peripherals, as well as multiple analog peripherals, timers, and PWM channels. It is available in QFN33, LQFP48, and LQFP64 package types. Key Specifications: - Up to 192 MHz Arm® Cortex®-M4F core with DSP instruction set and MPU - 512/256/128 KB zero-wait state Flash memory - 160/128/64 KB SRAM - 4 KB Secure Protection ROM and 2 KB One-Time-Programmable ROM - Cyclic Redundancy Calculation Unit - 16-channel Peripheral DMA Controller - External Bus Interface, including LCD parallel interface - Multiple clock sources and RTC with battery-powered backup registers - Various timers, PWM channels, and watchdog timers - Analog peripherals, such as ADC, DAC, comparators, and operational amplifiers - Multiple communication interfaces, including UART, ISO-7816, I²C, SPI, I²S, USCI, and SD Host Controllers - Quadrature encoder interfaces and input capture timer/counter units - Operating voltage range: 1.8V to 3.6V - Operating temperature range: -40 °C to +105 °C View less