My Inquiry
My Account
STMicroelectronics STM32L552CEU6P
- Part No.:
- STM32L552CEU6P
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32L552CEU6P.pdf
- Description:
- IC MCU 32BIT 512KB FLSH 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:4,415
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32L552CEU6P from STMicroelectronics is an ultra-low-power Arm® Cortex®-M33 32-bit microcontroller with TrustZone® security, FPU, and SMPS support. It delivers 165 DMIPS at up to 110 MHz, integrates 512 KB Flash (dual-bank read-while-write), 256 KB SRAM (64 KB with hardware parity), and operates from 1.71 V to 3.6 V across –40 °C to 125 °C. It targets secure, battery-constrained IoT edge nodes requiring real-time processing, cryptographic services, and sub-μA standby operation.
For engineers reviewing the STM32L552CEU6P datasheet, STM32L552CEU6P pinout, STM32L552CEU6P application, or STM32L552CEU6P equivalent, key selection criteria include TrustZone-enabled secure boot, 222 nA Standby mode with RTC, 5 µs wakeup from Stop mode, dual 12-bit ADCs (5 Msps), and UCPD-based USB Type-C™/PD controller integration for smart power management in portable industrial sensors.
Technical Context
The STM32L552CEU6P implements a dual-core security architecture via Arm TrustZone®, isolating secure and non-secure firmware execution spaces with hardware-enforced memory and peripheral protection. Its FlexPowerControl system enables dynamic voltage scaling between LDO and SMPS modes, achieving 62 μA/MHz at 3 V in SMPS mode and 108 nA in Standby with 5 wakeup pins.
It integrates three PLLs (system, USB, audio), ART Accelerator with 8 KB instruction cache for zero-wait-state Flash execution, and dedicated security peripherals including HASH accelerator, NIST SP800-90B–compliant TRNG, and Root Secure Services (RSS) for secure firmware installation (SFI) and TF-M–based over-the-air updates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 with TrustZone® and FPU, enabling secure real-time control and cryptographic acceleration |
| Max Clock Frequency | 110 MHz - supports deterministic 165 DMIPS performance for sensor fusion and protocol stacks |
| Flash Memory | 512 KB dual-bank Flash with read-while-write - enables seamless firmware updates without interruption |
| SRAM | 256 KB total, including 64 KB with hardware parity - ensures data integrity in safety-critical contexts |
| Ultra-Low-Power Modes | 222 nA Standby with RTC, 3.16 μA Stop 2 with RTC, 5 µs wakeup - extends battery life in intermittent-sensing applications |
| Security Features | TrustZone®, RDP, HDP, SFI, TF-M support, HASH, TRNG - meets PSA Level 3 and SESIP certification requirements |
| Analog Peripherals | 2×12-bit ADC (5 Msps), 2×12-bit DAC, 2×OPAMP, 2×comparator - supports precision analog signal acquisition and conditioning |
| Communication Interfaces | 1×UCPD, 1×USB FS, 4×I²C, 6×USART, 3×SPI, 2×SAI, 1×FDCAN, 1×SDMMC - enables multi-protocol connectivity in constrained edge devices |
Pinout & Package
STM32L552CEU6P uses the UFQFPN48 (7 × 7 mm) package with 48-pin quad flat no-lead construction, optimized for compact PCB layouts and thermal efficiency in space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main digital supply | 1.71–3.6 V input powering core logic, SRAM, and most peripherals |
| VSS | Digital ground reference | Common return path for all digital circuitry; requires low-impedance PCB plane |
| VBAT | Backup power supply | Supplies RTC and 32×32-bit backup registers during main power loss (187 nA quiescent) |
| NRST | Active-low reset input | Hardware reset trigger with internal pull-up; compatible with external reset supervisors |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 114 fast GPIOs with interrupt capability; most are 5 V-tolerant and support multiple alternate functions |
| PC13–PC15 | RTC-related pins | Support 32 kHz LSE crystal oscillator and RTC calibration; critical for timekeeping accuracy |
| UCPD1_DB | UCPD data bus | Enables USB Type-C™ cable detection, VCONN switching, and PD communication per USB PD 3.0 spec |
| USB_DP/USB_DM | USB 2.0 full-speed differential pair | Crystal-less USB interface supporting LPM and Battery Charging Detection (BCD) |
Key Features
| Feature | Design Value |
|---|---|
| TrustZone®-enabled secure boot | Hardware root of trust with unique boot entry and hide protection area (HDP) prevents unauthorized firmware execution |
| SMPS + LDO dual-regulator system | Reduces active-mode current by 42% vs LDO-only (62 μA/MHz @ 3 V), extending battery life in always-on sensing |
| ART Accelerator with 8 KB cache | Enables 0-wait-state execution from Flash at 110 MHz, eliminating CPU stalls during code fetch |
| ULPMark-CP® score of 370 | Industry-standard benchmark confirming best-in-class energy efficiency for Cortex-M33 MCUs |
| OCTOSPI interface | Supports high-speed external memory expansion (XIP, PSRAM, NOR, NAND, FRAM) with single/dual/octal I/O modes |
| Secure Firmware Installation (SFI) | Uses embedded RSS to validate and install signed firmware images, preventing malicious payload injection |
Applications
| Smart Utility Meter | Wearable Health Monitor |
|---|---|
Use Scenario: Tamper-resistant electricity/water meter with encrypted data logging, remote firmware update, and long-life battery operation. IC Role / Device Role / Timing Role: Main secure application processor managing metrology ADC sampling, TLS-secured cloud upload, and RTC-based billing cycles. Use Value: 222 nA Standby with RTC maintains calendar accuracy for 10+ years on coin cell; TrustZone isolates metrology firmware from UI stack. | Use Scenario: Clinical-grade wearable measuring ECG, SpO₂, and motion using capacitive touch and analog front-end. IC Role / Device Role / Timing Role: Central MCU handling sensor fusion, BLE packetization, and low-power sleep scheduling with sub-5 µs wakeup latency. Use Value: Dual 12-bit ADCs (5 Msps) capture high-fidelity biosignals; 2× OPAMPs enable programmable gain amplification before digitization. |
| Industrial Wireless Sensor Node | USB-C Powered Edge Gateway |
Use Scenario: LoRaWAN or NB-IoT node monitoring temperature, humidity, and vibration in factory environments. IC Role / Device Role / Timing Role: Low-power host controlling environmental sensors, crypto-accelerated data signing, and scheduled radio transmission. Use Value: 17 nA Shutdown mode with 5 wakeup pins enables event-driven wake; FDCAN supports local fieldbus interoperability. | Use Scenario: Compact gateway aggregating BLE/Zigbee devices and providing USB-C PD port negotiation and power delivery. IC Role / Device Role / Timing Role: USB Type-C™ controller (UCPD) managing VBUS negotiation, role swap, and policy engine execution. Use Value: Integrated UCPD eliminates external PD controller IC; 1×USB FS + OCTOSPI enables local storage and host-side firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power secure MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32U575ZIT6Q | Higher clock (160 MHz), 2 MB Flash, 784 KB SRAM, VDDIO2 domain for 1.8 V I/O, no UCPD | Better suited for complex GUI or AI inference at edge; lacks native USB-C PD control | Select when >1 MB Flash and higher compute throughput are required, and USB-C PD is handled externally |
| NXP LPC55S69JBD100 | Arm Cortex-M33, 640 KB Flash, 320 KB SRAM, no SMPS, lower ULPMark-CP (280), no UCPD | Strong security (EdgeLock SE050 co-processor), but higher active current (110 μA/MHz) and no integrated PD controller | Choose when hardware-backed PKI and secure element integration outweigh USB-C PD and SMPS advantages |
Compared with STM32U575ZIT6Q and LPC55S69JBD100, the STM32L552CEU6P uniquely balances sub-μA standby, integrated UCPD, and SMPS efficiency-making it optimal for battery-powered USB-C–enabled edge nodes where size, security, and power autonomy are co-prioritized.
Availability
STM32L552CEU6P is available at Aetrix Electronics and suitable for smart utility meters, wearable health monitors, industrial wireless sensor nodes, and USB-C powered edge gateways requiring stable component supply across extended product lifecycles.
Supply support for STM32L552CEU6P 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, MEMS, and analog chips for industrial, automotive, and consumer markets.
The STM32L5 series is engineered for ultra-low-power, high-security embedded applications-combining Arm TrustZone®, advanced power gating, and certified cryptographic services to address IoT device identity, firmware integrity, and multi-year battery operation.
FAQ
What is the maximum operating temperature range for STM32L552CEU6P?
The STM32L552CEU6P is qualified for operation from –40 °C to +125 °C ambient temperature. This extended range is validated per ST's industrial qualification standards and supports deployment in harsh environments such as motor control enclosures, outdoor utility infrastructure, and automotive under-hood telemetry modules without derating.
Does STM32L552CEU6P support hardware encryption acceleration?
Yes, STM32L552CEU6P includes a dedicated HASH hardware accelerator supporting SHA-1, SHA-224, and SHA-256 algorithms, plus a NIST SP800-90B–compliant True Random Number Generator (TRNG). These are accessible via TrustZone-protected drivers and integrated into TF-M's crypto service layer for TLS handshake acceleration and secure key generation.
Can STM32L552CEU6P operate without an external crystal?
Yes. The device integrates multiple internal oscillators: a 16 MHz factory-trimmed RC (±1%), a low-power 32 kHz RC (±5%), and a multispeed 100 kHz–48 MHz oscillator auto-trimmed by LSE (±0.25%). These allow full operation-including USB FS and RTC-without external crystals, reducing BOM cost and board space in cost-sensitive designs.
What debug interfaces are supported on STM32L552CEU6P?
The STM32L552CEU6P supports Serial Wire Debug (SWD) and JTAG via its SWJ-DP interface, plus Embedded Trace Macrocell™ (ETM) for real-time instruction trace. All debug access respects TrustZone boundaries: secure debug requires authenticated entry, and non-secure debug sessions cannot access secure memory or peripherals.
STM32L552CEU6P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-UFQFN Exposed Pad
- Series:
- STM32L5
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M33
- Core Size:
- 32-Bit Single-Core
- Speed:
- 110MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, PWM, WDT
- Number of I/O:
- 36
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 9x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L552CEU6P FAQ
1.How can I place an order for STM32L552CEU6P through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L552CEU6P 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 STM32L552CEU6P reliable?
The price and inventory of STM32L552CEU6P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L552CEU6P is usually 5 days.
3.What payment methods are accepted for STM32L552CEU6P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L552CEU6P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L552CEU6P?
STM32L552CEU6P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L552CEU6P 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 STM32L552CEU6P?
For technical support, including STM32L552CEU6P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L552CEU6P requirements.
6.How does Aetrix verify that STM32L552CEU6P is sourced from the original manufacturer or authorized distributors?
All STM32L552CEU6P 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 STM32L552CEU6P meets industry standards.
7.What is the process for return or replacement of STM32L552CEU6P?
All STM32L552CEU6P units undergo pre-shipment inspection (PSI). If there is an issue with STM32L552CEU6P, 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 STM32L552CEU6P part is unused and in its original packaging.
Return procedure for STM32L552CEU6P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L552CEU6P Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
