STM32L552ZET6Q - 110MHz Cortex-M33 MCU 512KB | STMicroelectronics
MPN： STM32L552ZET6Q ✓ 啟用中STM32L552ZET6Q 概覽
An ARM Cortex-M33 microcontroller is a 32-bit RISC core designed for energy-sensitive embedded applications that require hardware isolation between trusted and untrusted code. The Cortex-M33 sits within the broader ARM Cortex-M family (M0/M0+/M3/M4/M7) and belongs to the same ultra-low-power STM32L5 series as the M33-only STM32L552 and Cortex-M33+TrustZone variants. TrustZone for ARMv8-M enables secure boot, secure firmware update, and isolation of cryptographic assets - essential for IoT endpoints subject to evolving cybersecurity regulations.
Key features of the STM32L552ZET6Q include the Cortex-M33 core with FPU and TrustZone, 512 KB dual-bank Flash supporting secure/insecure partitioning, 256 KB SRAM, SMPS step-down converter for core supply, multiple low-power modes (Shutdown, Standby, Stop2 with RTC), up to 16-bit ADC, 12-bit DAC, comparators, op-amps, USB Type-C Power Delivery, CAN FD, SDMMC, and crypto/hash accelerators (AES-256, SHA-256, PKA). The part operates across -40C to +85C industrial temperature range.
The architecture couples the Cortex-M33 with an AHB/APB bus matrix, DMA controllers, and a wide peripheral set, allowing designers to run DSP code via the FPU while keeping average power draw well below 100 uA/MHz at moderate loads. The integrated SMPS supplies the core, freeing the external LDO for I/O and analog, simplifying PCB design in battery-powered nodes.
Typical applications include secure IoT sensors, smart-metering endpoints, wearables, industrial HMI controllers, USB Type-C devices, and low-power wireless sensor nodes. The combination of TrustZone isolation and hardware crypto accelerators also suits connected medical peripherals and asset-tracking tags.
When designing with the STM32L552ZET6Q, ensure the SMPS inductor selection matches the datasheet reference design and that decoupling is placed adjacent to every VDD pin pair. TrustZone partitioning requires both Secure and Non-Secure firmware images to be provisioned correctly; verify the secure-boot chain in your BSP before deploying production units.
This page synthesizes distributor pricing, drop-in 144-LQFP alternatives, and practical TrustZone/SMPS design notes not aggregated in the manufacturer datasheet.
直接替換替代品，適用於 STM32L552ZET6Q — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： STM32L552ZET6Q （相同外形與佔位）.
STM32L552ZET6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM32L552ZET6Q 最大額定值與電氣特性
| Core | ARM Cortex-M33 with FPU and TrustZone |
| 最大時脈頻率 | 110 MHz |
| DMIPS | 165 |
| Program Memory | 512 KB Flash |
| RAM | 256 KB SRAM |
| 資料匯流排寬度 | 32-bit |
| 封裝 | 144-LQFP (20x20 mm) |
| 供應電壓 | 1.71 V to 3.6 V |
| 工作溫度 | -40C to +85C |
| Internal SMPS | Yes (core supply step-down) |
| TrustZone (ARMv8-M) | Yes |
| Hardware Crypto Accelerators | AES-256, SHA-256, PKA, TRNG |
| ADC | 12-bit / 16-bit SAR (per datasheet) |
| DAC | 12-bit |
| USB Type-C Power Delivery | Yes |
| CAN FD | Yes |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
STM32L552ZET6Q 144-lqfp (20x20 mm) 腳位配置指南
STM32L552ZET6Q（144-lqfp (20x20 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： STM32L552ZET6Q.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM32L552ZET6Q 適用於 6 應用s: Secure IoT Sensor Endpoints, Smart-Metering and Energy Harvesting Nodes, Industrial HMI Controllers, Wearables and Fitness Bands, USB Type-C Powered Devices, Asset Tracking and Logistics Tags.
Secure IoT Sensor Endpoints
The STM32L552ZET6Q is well-suited for secure IoT sensor endpoints thanks to its Cortex-M33 core with TrustZone, hardware AES-256/SHA-256 accelerators, and an integrated SMPS that holds dynamic current under 100 uA/MHz at 1.8 V. The Cortex-M33 at 110 MHz executes sensor-fusion and encrypted-transport stacks in single-digit milliseconds per burst, then drops into Stop2 mode where the RTC keeps time at microamp current. The 144-LQFP exposes up to 17 timers plus ADC/DAC, so designers can interface analog sensors, drive PWM actuators, and route encrypted data over USB-C, CAN FD, or SDMMC - all from one IC. Source: ST DS13162 family overview.
推薦
Smart-Metering and Energy Harvesting Nodes
Battery-powered metering nodes benefit from the STM32L552ZET6Q's dual-bank 512 KB Flash, which supports read-while-write firmware updates without service windows. The integrated SMPS dynamically scales the core voltage against load, extending battery life when the node is idle. TrustZone isolates the cryptographic key store from the metering firmware, supporting secure boot requirements for utility certification. CAN FD and USB-C Power Delivery peripherals let the same board act as either a battery-powered sensor node or a wired meter bridge. The 144-LQFP fits mechanically into legacy LQFP-144 land patterns for upgrade-in-place designs.
推薦
Industrial HMI Controllers
For industrial HMI, the STM32L552ZET6Q delivers 165 DMIPS plus FPU, enough to drive small TFT-LCDs via SPI/DSI bridges and render real-time operator graphics. The 144-LQFP exposes parallel interfaces and FSMC for direct LCD bus attachment, and the ADC/DAC pair supports backlight control and audio cues. With TrustZone, the secure LCD menu and parameter entry surface can be cordoned off from networking stacks - a common requirement for secured factory-floor panels. The wide 1.71-3.6 V supply range tolerates 24V-tolerant industrial rails after external regulation.
推薦
Wearables and Fitness Bands
Wearables rely on tight power budgets and small footprints; the STM32L552ZET6Q's SMPS, Stop2 mode, and Cortex-M33 execute biometric streaming at moderate load and still drop the system to nanoamp shutdown between samples. The on-chip AES and SHA-256 accelerate heart-rate-data encryption before radio handoff, and TrustZone keeps biometric templates isolated from application code. 256 KB SRAM buffers full biosignal frames locally to keep the radio bus idle most of the time, saving tens of uA per second. The integrated op-amps and 16-bit ADC let designers read ECG/PPG sensors without external analog front-ends.
推薦
USB Type-C Powered Devices
The STM32L552ZET6Q's integrated USB Type-C/USB-PD peripheral negotiates Source/Sink roles and Power Delivery contracts without an external PD controller, reducing BOM cost for USB-C dongles, hubs, and powered accessories. Cortex-M33 at 110 MHz handles USB-PD protocol and host-class stacks simultaneously. TrustZone isolates the PD firmware update surface from user-class code, and the SMPS handles variable input voltages gracefully. The 144-LQFP brings out USB FS/HS plus CAN FD, making it usable as a USB-C to CAN/CAN-FD bridge for industrial accessories.
推薦
Asset Tracking and Logistics Tags
Connected asset tags typically sleep most of the day and wake for short bursts; the STM32L552ZET6Q fits this duty cycle with sub-microamp Stop2 current and fast wake via RTC or interrupt. The 512 KB dual-bank Flash holds over-the-air firmware updates stored securely behind TrustZone, while hardware AES-256 encrypts tag-to-cloud traffic without CPU overhead. The on-chip SMPS lets the tag work from USB-C, CR2032, or harvested energy sources. Peripherals like SDMMC attach local storage for offline log buffering, and the 144-LQFP exposes sufficient GPIO for sensor fan-out.
推薦
推薦產品摘要
工程參考資料，適用於 STM32L552ZET6Q — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STM32L552ZET6 | STM32L552VET6 | STM32L552CET6 |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 144-LQFP (ZE, 20x20 mm) | 144-LQFP (ZE, 20x20 mm) - same | 100-LQFP (VE) - smaller | 48-LQFP (CP) - smaller |
| Core | Cortex-M33 + FPU + TrustZone | Cortex-M33 + FPU + TrustZone | Cortex-M33 + FPU + TrustZone | Cortex-M33 + FPU + TrustZone |
| Maximum Clock | 110 MHz | 110 MHz | 110 MHz | 110 MHz |
| Flash | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 256 KB | 256 KB | 256 KB | 256 KB |
| Internal SMPS | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
主要差異化特點
- TrustZone for ARMv8-M with hardware crypto accelerators (對比STM32L496VGT6)
- Internal SMPS for higher dynamic efficiency (對比STM32L152R6T6A)
- USB Type-C Power Delivery integrated (對比STM32F102R6T6A)
設計說明
The STM32L552ZET6Q integrates a step-down SMPS for the core voltage domain. Per the ST reference design (UM2624), use a 10 uH shielded inductor on L1 (SMPS output) with low-ESR ceramic caps (Cout >= 4.7 uF X7R), placed within 5 mm of the LQFP pins. Expected: SMPS efficiency ~85% at 50 mA / 1.2 V, dropping total IC core current by ~30% versus the LDO-only mode.
TrustZone partitioning requires defining two image slots (Secure/Non-Secure) during BSP bring-up. Enable SAU (Security Attribution Unit) regions in TZEN=1 mode and lock the option bytes after provisioning. Estimated: A typical secure-boot signature verification with ECDSA-P256 + SHA-256 takes ~25 ms at 110 MHz using the on-chip PKA, suitable for boot-time checks but not for per-message signatures.
The 144-LQFP package theta_JA is approximately 35 C/W on a 4-layer JEDEC PCB. At 110 MHz with the SMPS active, core power is ~80 mW; estimated junction temperature rise above ambient stays under 3 C, well within the -40 to +85 C industrial range. Add a copper pour under the exposed die-attach pad for margin in enclosed industrial housings.
Do not leave the SMPS inductor unpopulated during prototype bring-up - the internal LDO-only fallback can deliver core voltage but at lower efficiency. Ensure VBAT is tied to VDD or to backup battery per datasheet footnote; misuse will corrupt RTC registers on power cycles. TrustZone option bytes cannot be read-back after lockdown, so test the secure configuration on a non-production image first.
合規資訊
RoHS and REACH compliant per ST product page. The ZET6Q variant is industrial-grade (-40 to +85 C); AEC-Q100 parts are ordered separately as ZET6Q-Q grades. Lead-free and halogen-free per ST ecology declaration.
