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STMicroelectronics STM32H523CEU6
- Part No.:
- STM32H523CEU6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32H523CEU6.pdf
- Description:
- IC MCU 32BIT 512KB FLSH 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:2,569
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Product details
Overview
STM32H523CEU6 from STMicroelectronics is a 32-bit Arm® Cortex®-M33 microcontroller with TrustZone® security, FPU, and 250 MHz max clock; features 512-Kbyte ECC flash, 272-Kbyte SRAM (80-Kbyte with ECC), and operates from 1.71–3.6 V. 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 STM32H523CEU6 datasheet, STM32H523CEU6 pinout, STM32H523CEU6 application, or STM32H523CEU6 equivalent, key selection factors include TrustZone-enforced peripheral isolation, dual DMA controllers for offloading, 2×12-bit ADCs (5 Msps), FDCAN support, and WLCSP39 package suitability for space-constrained designs.
Technical Context
The device implements Armv8-M mainline security with configurable SAU regions and TrustZone-aware peripherals including GTZC, secure boot via HDP, and TF-M–enabled firmware upgrades. Its ART Accelerator includes 8-Kbyte instruction cache and 4-Kbyte data cache to sustain zero-wait-state execution from flash and external memories.
Security functions include PSA Level 3 and SESIP3 certification, ECDSA signature verification, SHA-1/SHA-2/SHA-3 hardware hashing, NIST SP800-90B–compliant TRNG, and active tamper detection. Power management supports Sleep/Stop/Standby modes with 2-Kbyte backup SRAM retention and VBAT-supplied RTC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 with TrustZone, FPU, MPU, up to 250 MHz (375 DMIPS) |
| Flash Memory | 512 Kbytes embedded flash with ECC, two banks supporting read-while-write |
| SRAM | 272 Kbytes total: 80-Kbyte SRAM2 with ECC + 2-Kbyte backup SRAM in low-power modes |
| Analog Peripherals | Two 12-bit ADCs (5 Msps), one 12-bit dual-channel DAC, digital temperature sensor, VREFBUF |
| Communication Interfaces | Up to 21 interfaces: 3×I²C (Fm+), 2×I³C, 6×U(S)ART/LPUART, 4×SPI/I²S, 2×FDCAN, USB FS host/device, UCPD |
| Security Features | PSA Level 3 & SESIP3 certified; PKA, HASH, TRNG; secure debug authentication; SFI and root-of-trust boot |
| Package | WLCSP39 (2.76 × 2.78 mm, 0.4 mm pitch), ballout compatible with ultra-compact PCB layouts |
Pinout & Package
STM32H523CEU6 uses the WLCSP39 (2.76 × 2.78 mm, 0.4 mm pitch) package with 39 solder balls. Pin definitions follow ST's standardized ballout layout for this variant, supporting high-density routing and minimal board footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate 1.71–3.6 V domains for core, analog, and I/O; enable independent noise filtering and voltage scaling |
| VSS, VSSA, VSSIO2 | Ground returns | Dedicated ground paths per domain reduce coupling noise and improve ADC/DAC accuracy |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external reset sources and brown-out recovery |
| BOOT0 | Boot mode selection | Configures boot source (system memory, flash, or SRAM); level sampled at power-on reset |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 112 fast I/Os (most 5 V-tolerant); many support multiple alternate functions including FDCAN, SPI, I²C, UART |
| VREF+ | Analog reference input | External reference for ADC/DAC precision; bypassed internally when VREFINT is used |
| VCAP | Core regulator decoupling | Connects to 2.2 µF ceramic capacitor; stabilizes internal LDO output for consistent CPU performance |
Key Features
| Feature | Design Value |
|---|---|
| TrustZone-enforced peripheral isolation | Eight configurable SAU regions allow secure/non-secure partitioning of memory and peripherals at runtime |
| ART Accelerator with dual caches | 8-Kbyte ICACHE + 4-Kbyte DCACHE eliminate flash wait states and accelerate external memory access |
| Secure firmware installation (SFI) | Hardware-verified image authentication prevents unauthorized code execution during boot or OTA updates |
| Dual GPDMA controllers | Two independent dual-port DMAs with FIFOs offload CPU for concurrent data movement across peripherals |
| Flexible low-power architecture | Three low-power modes (Sleep/Stop/Standby) with selective peripheral retention and 2-Kbyte backup SRAM |
Applications
| Industrial PLC Edge Node | 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/UART fieldbus, and performing secure firmware updates. Use Value: 250 MHz Cortex-M33 + FPU enables sub-10 µs PID loop execution; TrustZone isolates control logic from communication stacks. | Use Scenario: Tamper-resistant electricity meter with metrology, display, and secure wireless reporting. IC Role / Device Role / Timing Role: System-on-chip handling metrology ADC sampling, LCD driving, crypto-secured NB-IoT transmission, and RTC-based billing cycles. Use Value: Dual 12-bit ADCs (5 Msps) support Class 0.2 metrology; PSA Level 3 certification meets utility anti-tampering mandates. |
| Secure IoT Gateway | Medical Sensor Hub |
Use Scenario: Battery-powered gateway aggregating BLE/Zigbee sensor data and forwarding via TLS-secured cellular link. IC Role / Device Role / Timing Role: Secure application processor running TF-M, managing encrypted sensor data ingestion, and orchestrating authenticated cloud uploads. Use Value: PKA + HASH accelerators cut TLS handshake time by >60%; WLCSP39 package enables coin-cell–sized form factor. | Use Scenario: Portable patient monitor collecting ECG, SpO₂, and temperature with local analytics and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Medical-grade signal acquisition MCU with isolated analog front-end, secure data logging, and HIPAA-compliant BLE pairing. Use Value: 12-bit dual-channel DAC drives calibrated analog outputs; TRNG + ECDSA ensures cryptographically secure device identity. |
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 Mbyte), larger LQFP100 package, adds Ethernet MAC and additional Octo-SPI channel | Suitable for gateway-class devices requiring wired connectivity and extended code storage | Select when needing >512 Kbyte flash or Ethernet PHY interface; not pin-compatible with WLCSP39 |
| STM32L562QEY6P | Lower max frequency (160 MHz), smaller flash (512 Kbyte), no FPU, but lower active current (68 µA/MHz) | Better suited for battery-only operation with moderate compute needs and basic security (TrustZone only) | Prefer for ultra-low-power primary sensors; lacks PKA, SHA-3, and SFI capabilities of H523 |
Compared with STM32H563VIT6 and STM32L562QEY6P, the STM32H523CEU6 uniquely balances high-frequency deterministic control (250 MHz), full PSA Level 3 crypto acceleration, and ultra-compact WLCSP39 packaging-making it optimal for space-constrained, security-critical edge nodes where both performance and physical size are limiting factors.
Availability
STM32H523CEU6 is available at Aetrix Electronics and suitable for industrial PLC edge nodes, smart energy meters, secure IoT gateways, and medical sensor hubs requiring stable component supply and long-term lifecycle assurance.
Supply support for STM32H523CEU6 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, sensors, and automotive ICs with strong emphasis on industrial and embedded security.
The STM32H5 series is designed for high-assurance embedded applications demanding PSA-certified security, real-time determinism, and scalable performance-from compact edge nodes to complex gateways-without compromising power efficiency.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating?
The STM32H523CEU6 achieves a maximum CPU frequency of 250 MHz, delivering 375 DMIPS (Dhrystone 2.1). This performance is sustained using the ART Accelerator's 8-Kbyte instruction cache, enabling zero-wait-state execution from embedded flash memory under typical conditions.
Does STM32H523CEU6 support hardware-accelerated cryptography beyond SHA and ECDSA?
Yes-it integrates a Public Key Accelerator (PKA) for RSA/ECC operations, a HASH module supporting SHA-1, SHA-2, and SHA-3, and a NIST SP800-90B–compliant True Random Number Generator (TRNG). These blocks enable full TLS 1.2/1.3 handshakes and secure key generation without software overhead.
How does the WLCSP39 package impact thermal and electrical design?
The WLCSP39 (2.76 × 2.78 mm, 0.4 mm pitch) requires microvia routing and controlled-impedance PCB stackup for signal integrity. Thermal dissipation relies on PCB copper area under the die; ST recommends ≥100 mm² exposed pad connected to internal ground planes for reliable operation at full 250 MHz load.
Can the 2-Kbyte backup SRAM retain data during full system power-down?
Yes-the 2-Kbyte backup SRAM remains powered and retains data when VBAT is supplied (e.g., coin cell), even with main VDD removed. It supports RTC operation, 32 backup registers, and tamper event logging in Standby mode with all other circuitry powered off.
STM32H523CEU6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-UFQFN Exposed Pad
- 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:
STM32H523CEU6 FAQ
1.How can I place an order for STM32H523CEU6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32H523CEU6 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 STM32H523CEU6 reliable?
The price and inventory of STM32H523CEU6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32H523CEU6 is usually 5 days.
3.What payment methods are accepted for STM32H523CEU6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32H523CEU6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32H523CEU6?
STM32H523CEU6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32H523CEU6 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 STM32H523CEU6?
For technical support, including STM32H523CEU6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32H523CEU6 requirements.
6.How does Aetrix verify that STM32H523CEU6 is sourced from the original manufacturer or authorized distributors?
All STM32H523CEU6 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 STM32H523CEU6 meets industry standards.
7.What is the process for return or replacement of STM32H523CEU6?
All STM32H523CEU6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32H523CEU6, 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 STM32H523CEU6 part is unused and in its original packaging.
Return procedure for STM32H523CEU6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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