The STM32H7B3IIK6 devices are based on the high-performance Arm® Cortex®-M7 32-bit RISC core running at speeds up to 280 MHz. The Cortex® -M7 core features a floating point unit (FPU) that supports Arm® double precision (IEEE754 compliant) and single precision data processing instructions and data types. STM32H7B3IIK6 devices support a full set of DSP instructions and a Memory Protection Unit (MPU) to enhance application security.

The STM32H7B3IIK6 device contains high-speed embedded memory with 2 MB of dual-bank Flash, approximately 1.4 MB of RAM (including 192 KB of TCM RAM, 1.18 MB of user SRAM, and 4 KB of backup SRAM), as well as individual Enhanced I/O and peripherals, three AHB buses, a 32-bit multi-AHB bus matrix, and a multilayer AXI interconnect supporting internal and external memory access.

All STM32H7B3IIK6 devices offer two ADCs, two DACs (one dual DAC and one single DAC), two ultra-low-power comparators, a low-power RTC, 12 general-purpose 16-bit timers, two Controlled PWM timers, three low-power timers, a true random number generator (RNG), crypto acceleration unit and HASH processor. The device supports nine digital filters for the external sigma delta modulator (DFSDM). They also feature standard and advanced communication interfaces.