Silicon
RTOS / Latency
STM32 / ARM Cortex-M
STM32H7 · STM32G4 · STM32U5
4.2µs P99 IRQSTM32H7 · TI-RTOS HWI · σ 0.3µs
STM32 and ARM Cortex-M MCUs are the heart of deterministic motor control, sensor acquisition, and safety-critical I/O. We architect bare-metal and FreeRTOS systems that squeeze every microsecond from Cortex-M7/M4 cores — from IRQ priority grouping to DMA chain configuration.
What Spikedge Optimizes
- NVIC priority grouping: all motor ISRs at preemption group 0
- DMA chaining: ADC → DMA → processing buffer without CPU involvement
- HAL replacement: direct register access for interrupt-critical paths
- FreeRTOS task priority audit: eliminate priority inversion sources
- CAN-FD / FDCAN configuration for automotive-grade communication
Specifications
CPU (STM32H7)Cortex-M7 @ 480MHz + Cortex-M4 @ 240MHz
FlashUp to 2MB
RAMUp to 1MB SRAM + DTCM
InterfacesCAN-FD, Ethernet, USB, SDIO, SPI, I2C, UART
SafetyIEC 61508 / IEC 62443 certification support
Sub-5µs IRQ on STM32H7 is achievable
We've done it on motor control systems. Let's profile your interrupt latency and find the ceiling.
Schedule Architecture Audit