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STMicroelectronics STM32H523CET6
- Part No.:
- STM32H523CET6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32H523CET6.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:679
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Product details
Overview
STM32H523CET6 from STMicroelectronics is a 32-bit Arm® Cortex®-M33 microcontroller with TrustZone® security, FPU, and 250 MHz max clock; features 512 KB flash with ECC, 272 KB SRAM (80 KB with ECC), and dual DMA controllers. It targets secure industrial control, IoT edge nodes, and smart metering where real-time performance, cryptographic acceleration, and low-power operation are critical.
For engineers reviewing the STM32H523CET6 datasheet, STM32H523CET6 pinout, STM32H523CET6 application, or STM32H523CET6 equivalent, key selection criteria include TrustZone-enforced peripheral isolation, 12-bit dual ADCs at 5 Msps, FDCAN support, Octo-SPI for serial PSRAM/NAND, and LQFP48 package compatibility with legacy STM32H7/H5 footprint constraints.
Technical Context
The device implements Armv8-M mainline security with configurable SAU regions and TrustZone-aware peripherals including GTZC-managed memory, RCC, GPIO, and FMC. Its ART Accelerator includes 8 KB instruction cache and 4 KB data cache to enable zero-wait-state execution from flash and external memories.
Security architecture integrates PSA Level 3 and SESIP3-certified functions: secure boot via unique entry point and HDP, TF-M–enabled firmware updates, ECDSA signature verification, SHA-1/SHA-2/SHA-3 hashing, NIST SP800-90B–compliant TRNG, and active tamper detection - all enforced at silicon level without software dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 with TrustZone, FPU, MPU, up to 250 MHz (375 DMIPS) |
| Memory | 512 KB flash (ECC, two banks, read-while-write), 272 KB SRAM (80 KB SRAM2 with ECC) |
| Analog | Dual 12-bit ADCs (5 Msps), dual-channel 12-bit DAC, digital temperature sensor, VREFBUF |
| Connectivity | 2× FDCAN, 3× I²C (Fm+), 2× I³C, 6× USART/LPUART, 4× SPI/I²S, USB FS host/device (crystal-less), UCPD |
| Security | PSA Level 3 & SESIP3 certified; PKA, HASH, TRNG; secure debug authentication; SFI support |
| Package | LQFP48 (7 × 7 mm), 48-pin, ECOPACK2 compliant, 1.71–3.6 V supply range |
| Low Power | Stop/Standby modes with 2 KB backup SRAM; VBAT RTC + 32 registers; 10 LP timers available in Stop mode |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad; 48 leads, standard JEDEC MO-220 footprint compatible with STM32H743/753 series PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | Main 1.71–3.6 V digital supply pair; decoupling required per datasheet Section 5.3.2 |
| VCAP | Core regulator bypass | External 2.2 µF ceramic capacitor mandatory for stable VCORE regulation |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external debounced pushbutton or supervisor IC |
| BOOT0 | Boot mode selection | High at power-up enables system memory bootloader; tied low for main flash execution |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Up to 112 fast I/Os (most 5 V-tolerant); 10 support independent 1.08 V supply for mixed-voltage interfacing |
| OSC_IN / OSC_OUT | External crystal interface | Supports 4–50 MHz HSE crystal; optional for precise timing when internal 64 MHz HSI insufficient |
| USB_DM / USB_DP | USB 2.0 full-speed differential pair | Crystal-less operation enabled; requires internal transceiver calibration via factory-trimmed values |
Key Features
| Feature | Design Value |
|---|---|
| TrustZone-enforced memory partitioning | Eight configurable SAU regions isolate secure/non-secure code/data in flash/SRAM with hardware enforcement |
| ART Accelerator with dual cache | 8 KB ICACHE + 4 KB DCACHE eliminate wait states for flash/external memory access, boosting deterministic real-time response |
| Flexible life cycle management | Secure debug authentication and field-programmable life cycle states (Secure, Non-Secure, RMA) prevent unauthorized access post-deployment |
| Octo-SPI interface | Single-pin-count interface supporting hyperflash, PSRAM, NAND, and NOR with XIP capability - replaces parallel memory buses |
| Dual 12-bit ADCs with interleaving | Simultaneous sampling across two ADCs achieves effective 5 Msps throughput for motor control or power quality monitoring |
Applications
| Industrial PLC Edge Node | Smart Energy Meter |
|---|---|
Use Scenario: Real-time I/O scanning, Modbus RTU over RS-485, and local anomaly detection in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary application MCU executing deterministic control loop (<100 µs jitter), managing FDCAN fieldbus, and running lightweight TF-M–secured firmware updates. Use Value: Dual 12-bit ADCs sample current/voltage sensors at 5 Msps; TrustZone isolates safety-critical logic from communication stack; LQFP48 simplifies conformal coating and thermal management. | Use Scenario: High-accuracy energy measurement with metrology-grade analog front-end and secure tariff switching in residential meters. IC Role / Device Role / Timing Role: Secure metering SoC co-processor handling AES-128 encryption, SHA-256 firmware validation, and isolated RTC-backed time-of-use billing. Use Value: PSA Level 3 certification meets IEC 62443-3-3 requirements; 2 KB backup SRAM retains billing logs during mains failure; VBAT-powered RTC maintains calendar accuracy. |
| Secure IoT Gateway | Medical Sensor Hub |
Use Scenario: Aggregating BLE/Wi-Fi sensor data, performing local AI inference (TinyML), and forwarding encrypted payloads to cloud via TLS 1.3. IC Role / Device Role / Timing Role: Trusted execution environment host for TF-M, managing PKA-accelerated ECDSA signatures and secure key storage in HDP-protected flash. Use Value: TRNG + HASH + PKA enable on-device certificate enrollment; Octo-SPI expands firmware partitioning for OTA rollback protection; LPUART minimizes sleep current during sensor polling. | Use Scenario: Battery-powered wearable hub collecting ECG, SpO₂, and motion data with HIPAA-compliant local encryption before transmission. IC Role / Device Role / Timing Role: Low-power medical data concentrator with active tamper detection, secure boot, and isolated ADC/DAC paths for analog signal integrity. Use Value: 10 LP timers maintain sub-second sensor wake cycles; digital temperature sensor monitors die temp for ADC calibration drift compensation; 5 V-tolerant I/Os interface directly with legacy analog sensor modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar secure MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32H563VIT6 | Higher pin count (100-pin LQFP), 2 MB flash, dual Octo-SPI, no USB FS (only USB HS + UCPD) | Targeted at complex gateways requiring dual external memory interfaces and high-bandwidth USB | Select when >512 KB flash or second Octo-SPI channel is required; not drop-in due to pinout and USB architecture change |
| STM32L562CEU6 | Lower clock (160 MHz), Cortex-M33 + TrustZone but no FPU, 512 KB flash, 256 KB SRAM, no FDCAN/Octo-SPI | Optimized for ultra-low-power battery devices needing basic crypto but no high-speed connectivity | Choose for sub-10 µA Stop mode current and simpler security stack; lacks motor control or industrial bus peripherals |
Compared with STM32H523CET6, the H563 offers expanded memory and dual Octo-SPI at cost of USB FS and LQFP48 compatibility, while the L562 trades performance and connectivity for extreme low-power efficiency - making the H523 optimal for balanced secure industrial edge use cases.
Availability
STM32H523CET6 is available at Aetrix Electronics and suitable for industrial PLCs, smart energy meters, secure IoT gateways, and medical sensor hubs requiring stable component supply, long-term lifecycle assurance, and certified security features.
Supply support for STM32H523CET6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive semiconductors since 1987.
The STM32H5 series targets high-assurance embedded systems requiring PSA-certified security, real-time determinism, and industrial-grade reliability - specifically engineered for secure edge computing, industrial automation, and trusted IoT endpoints.
FAQ
What is the maximum operating frequency and associated DMIPS rating?
The STM32H523CET6 operates at up to 250 MHz with an Arm Cortex-M33 core, achieving 375 DMIPS (Dhrystone 2.1). This performance is sustained under full cache utilization and includes FPU and MPU overhead. The 1.5 DMIPS/MHz ratio reflects optimized pipeline efficiency, validated across voltage/temperature ranges per DS14540 Rev 3 Section 3.1.
Does this MCU support secure firmware updates out of the box?
Yes - the STM32H523CET6 natively supports secure firmware updates via TF-M (Trusted Firmware-M), leveraging its PSA Level 3 and SESIP3-certified security stack. Features include secure boot with HDP-protected root of trust, ECDSA signature verification using the integrated PKA, and authenticated debug with flexible life cycle states. No external secure element is required.
Which external memory interfaces are supported, and what are their key capabilities?
The device supports Octo-SPI (for serial PSRAM/NAND/NOR/hyperflash with XIP), Flexible Memory Controller (FMC) for parallel SRAM/PSRAM/FRAM/NOR/NAND, and SD/SDIO/MMC. Octo-SPI enables single-lane-to-8-lane scalable bandwidth; FMC supports 16-bit data bus with NAND ECC and LCD interface; SDMMC includes DMA-accelerated transfers and UHS-I mode support.
Is the LQFP48 package pin-compatible with earlier STM32 families?
The LQFP48 package (7 × 7 mm, 0.5 mm pitch) shares mechanical footprint and power/ground pin locations with STM32H743/753VIT6 and STM32F767VIT6, enabling PCB reuse. However, signal mapping differs significantly - especially for USB, FDCAN, and Octo-SPI - requiring schematic review and pin reassignment per Table 13 in DS14540 Rev 3.
STM32H523CET6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32H5
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M33
- Core Size:
- 32-Bit
- Speed:
- 250MHz
- Connectivity:
- CANbus, FIFO, I2C, IrDA, LINbus, SMBus, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 35
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 272K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 10x10b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32H523CET6 FAQ
1.How can I place an order for STM32H523CET6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32H523CET6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32H523CET6 reliable?
The price and inventory of STM32H523CET6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32H523CET6 is usually 5 days.
3.What payment methods are accepted for STM32H523CET6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32H523CET6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32H523CET6?
STM32H523CET6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32H523CET6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32H523CET6?
For technical support, including STM32H523CET6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32H523CET6 requirements.
6.How does Aetrix verify that STM32H523CET6 is sourced from the original manufacturer or authorized distributors?
All STM32H523CET6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32H523CET6 meets industry standards.
7.What is the process for return or replacement of STM32H523CET6?
All STM32H523CET6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32H523CET6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32H523CET6 part is unused and in its original packaging.
Return procedure for STM32H523CET6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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