A MCU makes motion control faster and more accurate while using less power. See how it improves encoder performance and system response.
In motion control systems, encoder accuracy depends on how fast and precisely the MCU can process position signals. Geehy has introduced the G32R430, an MCU built specifically for magnetic, optical, and inductive encoders. It targets higher angle accuracy, lower latency, and reduced power use through a dedicated architecture and integrated peripherals.
The device is based on the Arm v8.1-M architecture with a Cortex-M52 core running up to 128 MHz. ITCM and DTCM enable zero-wait-state instruction and data access, supported by a 4 KB cache. This setup reduces delay in signal processing and supports stable, high-speed position feedback for precision motion control.
For angle calculation, the MCU integrates a hardware TMU and a proprietary ATAN instruction. Trigonometric functions run in hardware, delivering angle accuracy better than 0.0001° with output latency below 1 μs. Position feedback speed improves by around 40%, supporting faster servo response.
Signal acquisition is handled by two 16-bit ADCs. They support regular, injected, single-shot, and continuous modes, along with synchronized multi-channel sampling in master–slave mode. Both differential and single-ended inputs are supported. In differential mode, effective resolution reaches 13.5 bits and can be extended through oversampling. The MCU supports magnetic encoders with 17-bit or higher resolution and optical encoders with 23-bit or higher resolution.
For low-power operation, the MCU offers Stop and Standby modes. Stop mode consumes less than 15 μA with wake-up under 20 μs. Standby mode consumes less than 2 μA with wake-up under 50 μs. This can reduce power use by about 50% compared to conventional designs, helping extend battery life in portable encoder systems.
The device operates from 1.7 V to 3.6 V and across –40 °C to +105 °C. It complies with IEC 61508 functional safety requirements and includes ESD protection rated at HBM 4 kV and CDM 1 kV. Power-on reset, power-down reset, and programmable voltage detection are supported. Package options include UFBGA64, QFN60, QFN48, and QFN32.
Development support includes datasheets, manuals, application notes, SDKs, TinyBoard development boards, and magnetic encoder reference designs. It supports Keil and IAR IDEs. Samples are available through local sales channels.
