On November 1, during the 2021 China Mobile Global Partner Conference with the theme of “Numbers are Everything, Smart Computing”, as a professional chip subsidiary of China Mobile,China Mobile Xinsheng (Xinsheng Technology Co., Ltd.) released the first MCU microcontroller chip “CM32M4xxR” based on the RISC-V architecture core.
China Mobile said that focusing on the localization of IoT chips, China Mobile Xinsheng focused on the RISC-V core, tried the research and development of a variety of chips, and completed the comprehensive performance evaluation of RISC-V, SoC hardware architecture adaptation, and basic tool chain adaptation. , The underlying operating system migration,At present, a product system of “communication chip + security chip + MCU chip” has been formed.
CM32M4xxR is China Mobile’s first low-power and large-capacity MCU chip based on RISC-V core. It has the characteristics of high performance, high reliability, high security, and low power consumption. It can be widely used in smart door locks, IoT gateways, and interactive panels. , Measurement and control terminal, studentseducate, Consumer electronics related fields.
It uses a 32-bit RISC-V Nuclei N308 core with a maximum operating frequency of 144MHz, supports floating-point operations and DSP instructions, and integrates up to 512KB of embedded encrypted Flash, 144KB SRAM, and a wealth of high-performance analog function modules and communication interfaces.
Built-in 4 12bit 5Mbps ADC analog-to-digital conversion, 2 1Mbps 12bit DAC digital-to-analog conversion, 4 independent rail-to-rail operational amplifiers, 7 high-speed comparators, and support up to 24 channels of capacitive touch buttons.
At the same time, it integrates multiple digital communication interfaces such as U(S)ART, I2C, SPI, QSPI, CAN, etc., and a built-in cryptographic algorithm hardware acceleration engine.
The supporting development board adopts LQFP128 package, Micro-USB interface power supply, provides JTAG (hummingbird) debugging interface, on-board USB serial port, which is convenient for users to use and debug.
Through the supporting function expansion board and software SDK, the chip peripheral function verification can be quickly performed, helping users to conduct chip evaluation, software and hardware technical scheme verification, and reduce user development costs.
At present, CM32M4xxR samples, development boards, documentation, and supporting SDK are all ready, and users can apply at any time.
China Mobile Xinsheng said that in the future, it will continue to closely follow the development trend of 5G and the Internet of Things, develop an ecological layout around the RISC-V architecture, and launch more self-developed chip products.