Geehy Debuts First Motor Control MCU on Its New G32F0 Platform

Geehy Semiconductor has launched the G32F031, the first motor-control microcontroller in its new G32F0 platform, targeting cost-sensitive single-shunt field-oriented control (FOC) designs in appliances, power tools, and consumer electronics. The Arm Cortex-M0+ part runs at 64 MHz, integrates 64 KB of flash and 8 KB of SRAM, and is offered in six packages ranging from LQFP32 to QFN20.

The G32F031. 

The launch broadens the supply of motor-control MCUs from Chinese fabless vendors at a time when STMicroelectronics, Renesas, and NXP are each refreshing their entry-level motor MCU portfolios for the same applications.

Architecture and Motor-Control Peripherals

The G32F031 pairs a Cortex-M0+ core with built-in algorithm accelerators, flash access acceleration, and hardware blocks for MULT, DIV, and CRC. It runs across a 1.8 V to 5.5 V supply range and supports both 12-bit 2 MSPS analog-to-digital conversion and a peripheral set tuned for single-shunt FOC.

The 12-bit ADC includes eight independent result registers, three-segment sampling, and per-channel configurable sampling time, allowing designers to interleave phase-current and DC-bus measurements within the same PWM cycle. Two rail-to-rail operational amplifiers with slew rates up to 16 V/μs and 1-to-16 programmable gain support single-shunt and high-current sensing without an external front end. Four programmable analog comparators handle overcurrent protection (one) and back-EMF zero-crossing detection (three), with a built-in midpoint network that reduces the external component count for sensorless BLDC drives.

The timer set is purpose-built for motor control, with the G32F031 including a 16-bit advanced timer with four pairs of complementary 8-channel PWM outputs, dead-band generation, brake input, and multiple ADC triggers per cycle, alongside a 32-bit general-purpose timer, two 16-bit basic timers, a 16-bit low-power timer for wake-up management, and two watchdog timers plus a 24-bit SysTick. Communications include one SPI at up to 16 Mbps, one I2C, one USART, and one UART with LIN support. The release does not include CAN or USB.

FOC Support and Ecosystem

Geehy paired the silicon launch with its proprietary motor-control algorithm platform, a set of evaluation boards covering low- and high-voltage motor stages, and a micro-eval board for early prototyping. Reference designs cover high-speed hair dryers, blenders, drone electronic speed controllers, vacuum cleaners, and power tools—all categories where single-shunt sensorless FOC has displaced six-step trapezoidal control over the past several years, thanks to lower torque ripple and acoustic noise.

The G32F0 family will scale across four product lines, with core frequencies from 48 MHz to 72 MHz and memory capacities from 24 KB to 128 KB. Geehy said additional G32F0 SKUs will follow in the third and fourth quarters of 2026.

Geehy G32F031 block diagram.

The Cortex-M0+ core choice is unusual for a motor-control MCU at this peripheral tier. Competitors generally pair similar peripherals with a Cortex-M4 when they expect designers to run FOC math on the MCU itself. Geehy's algorithm accelerators and flash access acceleration are designed to let Cortex-M0+ silicon handle FOC loop rates competitive with M4-based parts at lower die area and power, which is the standard justification for a vendor-tuned M0+ in the motor-control segment.

Following a Pattern of Vertical Integration

The G32F031 joins the motor control market alongside STMicroelectronics' STM32G0 motor-control variants, Renesas RA0 and RX13T entries, and NXP's MCX-A line. The G32F031 launch reflects continued investment in the motor-control category, where Geehy already ships the GHP500N05 intelligent power module and the GHD1620T motor gate driver, both released earlier this year.

By bundling its own motor MCU, gate driver, and intelligent power module under a single vendor stack, Geehy is following the vertical-integration playbook STMicroelectronics, Texas Instruments, and Infineon have pursued in motor control. In the official press release, Geehy described the G32F0 family as "designed from the ground up around real customer application needs, with breakthroughs at the underlying architecture level."

All images used courtesy of Geehy Semiconductor.