National Technology's low-power MCU, with dynamic power consumption as low as 60μA/MHz, helps devices have ultra-long battery life

谍纸天眼

National Technology's low-power MCU, with dynamic power consumption as low as 60μA/MHz, helps devices have ultra-long battery life [Copy link]

 

In many IoT devices that rely on battery power, such as smart meters, personal wearable devices, home medical care, smart homes, remote measurement and control , and wireless sensors , device endurance is a thorny issue , which poses a great challenge to the core device in the device - the microcontroller (MCU). Low-power MCUs have emerged. According to relevant information forecasts, low-power MCUs account for about 15% to 20% of the entire MCU market. Due to the considerable application prospects of low-power MCUs , many manufacturers at home and abroad have launched various models of low-power MCUs to the market .

So how do you choose a low-power MCU chip that suits you ?

We know that in low-power design, the average current consumption often determines the battery life, while the power-off mode ( low-power mode ) of different levels of functions and the working current in the running state determine the actual power consumption in the application scenario. In actual use , the ability to quickly enter or exit low-power mode ( wake-up time ), quickly process data ( high-speed performance ) and low operating power consumption ( low dynamic power consumption ) is also extremely important. In addition, a good low-power MCU should provide interrupt functions for all its peripherals, and well-designed integrated intelligent low-power peripherals can also reduce the number of MCU wake-ups, thereby further reducing the overall energy consumption of the MCU. These are key factors that need to be comprehensively considered in the selection of low-power MCUs.

Among the many low-power MCU products on the market , the National Technology N32L4xx series is the industry's first low-power MCU designed with 40nm advanced process . It has been put into mass production and has been widely recognized by the market. With its leading low-power technology and product maturity, it has become a " hot item ". Let us take a look.

The N32L4xx low-power MCU adopts a number of " hard-core " designs to create industry-leading low-power features.

N32L4xx adopts multi-power domain architecture technology to reduce the standby power consumption of the chip. It also has multiple power management modes, with static power consumption as low as 1.5uA (typical value), and can quickly wake up from low power mode. The time from waking up from STOP2 state to executing the first instruction is only 20μs . With dynamic power adjustment technology , dynamic power consumption is as low as 60μA / MHz , and it has higher performance in the same low power state, achieving ultra-high performance and low energy consumption of 37.2 Coremark/mA, which is at the leading level in the industry .

The N32L4xx low-power MCU integrated peripherals also use low-power design technology to comprehensively reduce overall energy consumption.

Integrates a low-power asynchronous serial communication interface ( LPUART ) to support wake-up upon receiving data in STOP2 mode . It has multiple data receiving wake-up modes, making it more flexible to use and further reducing power consumption by reducing the number of MCU wake-up times .

Integrates a low power rotation counting module ( LPRCNT ) that can be used for non-contact fluid flow measurement (such as water meter flow measurement) . Automatically switches the sampling rate according to the current sensor position status to achieve extremely low power consumption . Can work in STOP2 mode, flow measurement does not require MCU intervention, and wakes up the MCU only when the measurement reaches the set flow threshold .

Integrated Segment LCD and other peripherals also adopt a low-power design , supporting the display in STOP2 mode and reducing the current consumption of the LCD .

In addition to its excellent low power consumption , the N32L4xx is also excellent in performance improvement . The N32L4xx is equipped with an ARM Cortex-M4F core with a main frequency of up to 108MHz , supports hardware multiplication and division , floating-point operations and DSP instructions , and has a CPU computing performance of up to 135DMIPS. It uses an efficient Cache mechanism to ensure that the CPU accesses Flash and executes programs without waiting, maximizing the CPU performance, with a CoreMark score of up to 357.4 points . Based on the internal multi-bus architecture and DMA controller, data interaction is more efficient .

N32L4xx also has many comprehensive advantages such as large storage capacity , high-performance analog peripherals (such as the industry-leading 5Mbps high-speed 12 -bit ADC ), rich digital interfaces, and high-performance hardware cryptographic acceleration engine . Therefore, it has been favored by the market and industry users after its launch and has become a powerful microcontroller for ultra-long battery life devices!

At present, National Technology's N32L4 x x low-power MCU currently has two series and 17 mass-produced models to choose from . [attach]586089[/attach ]

National Technology N32L4xx low power MCU

annysky2012

Is there any power consumption test comparison?