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STMicroelectronics STM32H523RET6
- Part No.:
- STM32H523RET6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32H523RET6.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:295
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Product details
Overview
STM32H523RET6 from STMicroelectronics is a 32-bit Arm® Cortex®-M33 microcontroller with TrustZone® security, 250 MHz max clock, 512 KB flash (ECC), 272 KB SRAM (80 KB with ECC), and integrated FPU-designed for secure industrial control, IoT edge nodes, and smart metering where real-time performance and firmware integrity are critical.
For engineers reviewing the STM32H523RET6 datasheet, STM32H523RET6 pinout, STM32H523RET6 application, or STM32H523RET6 equivalent, key selection considerations include TrustZone-enforced peripheral isolation, dual DMA controllers for offloading, 2×12-bit ADCs (5 Msps), FDCAN support, and LQFP64 package compatibility with legacy STM32H5 footprint layouts.
Technical Context
The device implements Armv8-M mainline security with configurable SAU regions and GTZC-managed memory/peripheral protection. Its dual-cache ART Accelerator includes 8 KB instruction cache and 4 KB data cache to sustain zero-wait-state execution from flash and external memories.
It integrates two independent GPDMA controllers supporting scatter-gather transfers, dual FDCAN interfaces compliant with ISO 11898-1:2015, and a full-featured USB 2.0 FS host/device controller with crystal-less operation-enabling robust connectivity in resource-constrained secure embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 with TrustZone, FPU, MPU, 250 MHz max frequency (375 DMIPS) |
| Flash Memory | 512 KB embedded flash with ECC, dual-bank read-while-write, 100K-cycle data flash capability |
| SRAM | 272 KB total: 80 KB SRAM2 with ECC + 2 KB backup SRAM active in Standby mode |
| Analog Peripherals | Two 12-bit ADCs (5 Msps), one 12-bit dual-channel DAC, digital temperature sensor (NIST SP800-90B compliant RNG) |
| Security Features | TrustZone-aware peripherals, SESIP3/PSA Level 3 certified, SFI, HDP, PKA, HASH (SHA-1/2/3), 96-bit unique ID |
| Communication | Up to 6 UART/USART (incl. LPUART), 3 I²C (Fm+), 2 I³C, 4 SPI/I²S, 2 FDCAN, USB FS host/device, UCPD, HDMI-CEC, SDMMC |
| Timers & Control | 16 timers including 2×32-bit general-purpose, 2×low-power 16-bit, 2 watchdogs, SysTick, and advanced-control timers (TIM1/TIM8) |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant ECOPACK2 finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | 1.71–3.6 V digital/analog/core rails; VDDIO2 supports independent 1.08–3.6 V I/O supply for mixed-voltage interfacing |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Up to 112 fast GPIOs; most 5 V-tolerant; 10 pins support independent low-voltage (1.08 V) operation |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset assertion and debug-triggered reset |
| BOOT0 | Boot mode selection | Configures boot source (system memory, flash, or SRAM); level sampled at power-on reset |
| PC13–PC15 | Low-power oscillator pins | Connect 32.768 kHz LSE crystal for RTC and low-power timer operation with calibration support |
| PA11/PA12 | USB D+/D− | Dedicated full-speed USB 2.0 transceiver with crystal-less operation and built-in termination resistors |
| PD0/PD1 | FDCAN1 TX/RX | Dual FDCAN controllers support CAN FD up to 5 Mbps with flexible timestamping and message filtering |
Key Features
| Feature | Design Value |
|---|---|
| TrustZone-enforced peripheral isolation | Eight configurable SAU regions enable hardware-enforced secure/non-secure partitioning of memory and peripherals |
| Secure firmware installation (SFI) | Root-of-trust boot flow with HDP-protected secure hide area ensures authenticated, tamper-resistant firmware updates |
| ART Accelerator dual-cache | 8 KB ICACHE + 4 KB DCACHE eliminate flash wait states and accelerate external memory access for deterministic real-time response |
| Flexible power management | Three low-power modes (Sleep/Stop/Standby) with VBAT-backed RTC and 32 registers; 2 KB backup SRAM retains state in Standby |
| Hardware crypto acceleration | PKA for ECDSA signature verification, HASH engine for SHA-1/SHA-2/SHA-3, and NIST-compliant TRNG for key generation |
Applications
| Industrial PLC Controller | Smart Energy Meter |
|---|---|
Use Scenario: Real-time motor control and fieldbus communication in compact programmable logic controllers. IC Role / Device Role / Timing Role: Primary MCU executing deterministic control loops, managing FDCAN fieldbus, and securing firmware updates via TrustZone. Use Value: Dual 32-bit timers with quadrature encoder input and 2×5 Msps ADCs enable precise servo feedback; SFI and HDP prevent unauthorized firmware modification. | Use Scenario: High-accuracy energy measurement and secure remote firmware update in DIN-rail mounted meters. IC Role / Device Role / Timing Role: Secure metering SoC handling metrology calculations, TLS stack, and tamper detection via active sensors. Use Value: PSA Level 3 certification and SESIP3 assurance meet IEC 62443-3-3 requirements; 32.768 kHz LSE + VBAT backup ensures RTC accuracy during mains failure. |
| IoT Edge Gateway | Medical Sensor Hub |
Use Scenario: Protocol translation and local AI inference at network edge with constrained power budget. IC Role / Device Role / Timing Role: Secure application processor running TF-M, managing USB/UART/SPI peripherals, and offloading crypto via PKA/HASH. Use Value: 272 KB SRAM enables local ML model caching; crystal-less USB FS reduces BOM cost; LPUART maintains comms in Stop mode. | Use Scenario: Multi-sensor aggregation (ECG, SpO₂, temp) with HIPAA-compliant data encryption before transmission. IC Role / Device Role / Timing Role: Trusted execution environment for sensor fusion, secure key storage, and encrypted BLE/USB output. Use Value: 96-bit unique ID binds device identity to cryptographic keys; analog temp sensor + DAC support calibrated analog front-end biasing. |
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 flash (2 MB) and RAM (1 MB), adds Ethernet MAC, no Octo-SPI; same LQFP100 package | Suitable for gateway-class devices requiring wired networking and larger code space | Select when Ethernet or >512 KB flash is required; not pin-compatible with LQFP64 STM32H523RET6 |
| STM32U575ZIT6 | Lower max frequency (160 MHz), 2 MB flash, 1 MB SRAM, PSA Level 3 certified but lacks FDCAN and Octo-SPI | Better suited for ultra-low-power sensor hubs without CAN or high-speed serial PSRAM/NOR | Choose for battery-powered applications prioritizing sub-1 µA Stop mode current over CAN/FDCAN or 250 MHz performance |
Compared with STM32H563VIT6 and STM32U575ZIT6, the STM32H523RET6 uniquely balances 250 MHz performance, FDCAN, Octo-SPI, and LQFP64 footprint-making it optimal for space-constrained industrial controllers needing CAN FD and secure firmware agility without Ethernet overhead.
Availability
STM32H523RET6 is available at Aetrix Electronics and suitable for industrial PLCs, smart energy meters, IoT edge gateways, and medical sensor hubs requiring stable component supply across multi-year production cycles.
Supply support for STM32H523RET6 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, specializing in microcontrollers, power management, and automotive ICs with strong emphasis on security and energy efficiency.
The STM32H5 series targets high-assurance embedded applications demanding Arm TrustZone, PSA-certified security, and real-time determinism-designed specifically for industrial control, smart infrastructure, and secure IoT endpoints.
FAQ
Does STM32H523RET6 support crystal-less USB operation?
Yes. The device integrates a factory-trimmed internal oscillator for USB 2.0 full-speed (12 Mbps) host and device operation without an external crystal, reducing BOM cost and PCB area while maintaining ±0.25% accuracy across temperature and voltage ranges per USB specification.
What is the maximum operating frequency with full peripheral enablement?
The STM32H523RET6 achieves 250 MHz CPU frequency with all caches enabled and voltage scaling set to Range 0 (1.26–1.32 V). At this speed, all 112 GPIOs, dual ADCs, FDCAN, USB, and Octo-SPI operate concurrently-verified per DS14540 Rev 3 Section 5.3.1 and Table 20.
How does the dual-bank flash architecture support firmware updates?
Its 512 KB flash is split into two independently erasable banks. While executing from Bank 1, Bank 2 can be erased and reprogrammed-enabling atomic, fail-safe over-the-air updates without halting real-time operations or compromising system availability.
Is the LQFP64 package of STM32H523RET6 pin-compatible with earlier STM32H5 variants?
Yes. The LQFP64 (5W) package shares identical pinout, power sequencing, and peripheral mapping with STM32H562/563 RET6/VIT6 variants in the same package-allowing drop-in replacement in existing designs targeting the H5 family's security and performance roadmap.
STM32H523RET6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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, MMC/SD/SDIO, SMBus, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 49
- 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 16x10b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32H523RET6 FAQ
1.How can I place an order for STM32H523RET6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32H523RET6 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 STM32H523RET6 reliable?
The price and inventory of STM32H523RET6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32H523RET6 is usually 5 days.
3.What payment methods are accepted for STM32H523RET6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32H523RET6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32H523RET6?
STM32H523RET6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32H523RET6 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 STM32H523RET6?
For technical support, including STM32H523RET6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32H523RET6 requirements.
6.How does Aetrix verify that STM32H523RET6 is sourced from the original manufacturer or authorized distributors?
All STM32H523RET6 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 STM32H523RET6 meets industry standards.
7.What is the process for return or replacement of STM32H523RET6?
All STM32H523RET6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32H523RET6, 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 STM32H523RET6 part is unused and in its original packaging.
Return procedure for STM32H523RET6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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