STM32H523CET6
Overview
The STM32H523CET6 is a high-performance 32-bit microcontroller based on the Arm Cortex-M33 core operating at up to 250 MHz. It features 512KB of Flash memory and 272KB of SRAM, integrating advanced security through Arm TrustZone and an MPU for robust IoT applications. This MCU balances high computational throughput with integrated hardware acceleration for efficient data processing.
Why Choose This Part
The STM32H523CET6 offers a significant performance boost over standard M4-based MCUs while adding essential hardware-level security features like TrustZone. It includes ECC on both Flash and SRAM for high-reliability requirements and a flexible external memory controller for system expansion. The 250 MHz operating frequency provides ample headroom for concurrent communication and control tasks.
Applications
Key Specifications
Getting Started
Start development using the STM32Cube ecosystem, including STM32CubeIDE and the STM32CubeH5 firmware package. For hardware evaluation, utilize a NUCLEO-H563ZI or similar H5 series board to prototype firmware before moving to custom hardware. Hardware debugging is supported via ST-LINK/V3 probes using the SWD interface.
Dev Boards
Development boards and breakout modules featuring the STM32H523CET6 or compatible chips — ready to use for prototyping.
STM32H523 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Connectivity | I/O Pins | Core Processor | Package | ADC/DAC | Flash | Stock |
|---|---|---|---|---|---|---|---|
| STM32H523CET6 (this part) | CANbus, FIFO, I2C,.. | 35 | ARM Cortex-M33 | LQFP-48 | A/D 10x12b SAR; D/.. | 512KB | 1,792 |
| STM32H523CCU6 | CANbus, FIFO, I2C,.. | 35 | ARM Cortex-M33F | UFQFN-48 | A/D 10x12b SAR; D/.. | 256KB | 565 |
| STM32H523VET6 | CANbus, FIFO, I2C,.. | 80 | ARM Cortex-M33 | LQFP-100 | A/D 16x12b SAR; D/.. | 512KB | 1,445 |



