DATASHEET
The NuMicro® M481 Base series is a high performance, low power microcontroller powered by the Arm® Cortex®-M4F core with DSP extension. It can run up to 192 MHz with 175 µA/MHz dynamic low power consumption. The 512/ 256 KB embedded dual bank Flash memory supports OTA (Over-The-Air) firmware upgrade, and the 160/ 96 KB embedded SRAM includes 32 KB cache to speed up external SPI Flash code execution. The factory pre-loaded bootloader delivers Secure Boot functionality to provide the code integrity check in embedded Flash memory. The built-in Secure Protection ROM provides a safe space for saving confidential program or data. One-Time Programmable ROM is also included for product life-cycle management.
The NuMicro® M481 Base series supports operating voltage from 1.8V to 3.6V, and industrial operating temperature from -40°C to 105°C. It is equipped with high speed UART/ SPI/ I²C/ PWM peripherals. Package type includes QFN33, LQFP48 and LQFP64.
Target Application:
IoT Device, Data Collector, etc.
Key Features:
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Core |
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Up to 192 MHz Arm® Cortex ®-M4F delivering 1.25 DMIPS per MHz |
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DSP instruction set |
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Memory Protection Unit (MPU) |
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Memory |
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512/ 256 KB zero-wait state Flash memory |
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160/ 96 KB RAM, including 32 KB external SPI Flash cache |
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4 KB Secure Protection ROM |
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2 KB One-Time-Programmable ROM |
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Cyclic Redundancy Calculation Unit |
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16-ch Peripheral DMA Controller |
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External Bus Interface |
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LCD parallel interface, i80 mode |
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Clocks |
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4 to 24 MHz crystal oscillator |
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32 kHz oscillator for RTC |
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Internal 12 MHz RC oscillator |
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Internal 10 kHz RC oscillator |
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Internal PLL up to 480 MHz |
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RTC |
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80 bytes of battery-powered backup registers |
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Timer & PWM |
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Four 32-bit timers |
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Twelve Enhanced PWM with twelve 16-bit timers |
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Twelve Basic PWM with two 16-bit timers |
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One 24-bit count-down SysTick timer |
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One watchdog timer |
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One window watchdog timer |
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Analog Peripheral |
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One 12-bit, up to 16-ch 5MSPS SAR ADC |
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Two 12-bit, 1 MSPS DAC |
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Two rail-to-rail comparators |
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Two operational amplifiers |
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Communication Interface |
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Up to 6 low power UART interfaces (17 Mbps), including 2 LIN interfaces |
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Up to 3 ISO-7816 interfaces (3.4 MHz), supporting full duplex UART mode |
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Three I²C interfaces (Up to 3.4 Mbps) |
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One SPI Flash interface (Up to 96 MHz) supports quad mode |
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One Quad-SPI interface (Up to 96 MHz) |
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Up to 4 SPI/ I²S interfaces (SPI up to 96 MHz, I²S up to 192 kHz/16-bit) |
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One I²S interface (192 kHz/32-bit) |
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Two USCI interfaces, supporting configurable UART/ SPI/ I²C |
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Two Secure Digital Host Controllers (50 MHz) |
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Control Interface |
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Two quadrature encoder interfaces |
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One 24-bit, 3-ch input capture timer/counter units |
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Operating Characteristic |
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Voltage range: 1.8V to 3.6V |
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Temperature range: -40°C to +105°C |
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For more details and documents, please link to Nuvoton Official Website GO
