⚡ HPMicro HPM5100: a 400 MHz RISC-V MCU that internalises the whole analog chain

HPMicro, one of the most active Chinese foundries on the RISC-V architecture, has announced the HPM5100 mixed-signal MCU family, led by the HPM5151 part: a 32-bit RISC-V core @ 400 MHz (up to 480 MHz in high-performance mode), 416 KB SRAM, 1 MB flash and — crucially — four 16-bit SAR ADCs at 2 MSPS, four operational amplifiers configurable as programmable-gain amps, and four analog comparators, CNX Software details.

The chip's appeal is exactly that integration: by embedding amplification, signal conditioning and conversion, the HPM5100 removes much of the external signal chain (op-amps, filters, dedicated ADCs) that would otherwise have to be routed on the PCB. It is a direct answer to motor-control and industrial sensing applications, where measurement noise and board area make the difference. 32 PWM channels, timers, CAN FD and USB 2.0 high-speed OTG with integrated PHY complete the picture, alongside a hardware FPU and DSP instructions (up to 3.57 CoreMark/MHz).

The context is the rise of RISC-V MCUs in real-time control: against ARM-based STM32s and PICs, HPMicro — already noticed for its 700+ MHz HPM6000 parts — plays the high-frequency and integrated-analog-peripherals card, while security adds secure boot, JTAG protection and a 128-bit unique ID.

The open question remains the software ecosystem — toolchain, Zephyr/FreeRTOS support, English documentation — which often decides the real-world success of these Chinese alternatives with Western developers. Source: CNX Software — HPMicro HPM5100 RISC-V MCU