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STMicroelectronics STM32L052T8Y6TR
- Part No.:
- STM32L052T8Y6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 36-UFBGA, WLCSP
- Datasheet:
-
STM32L052T8Y6TR.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 36WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:8,380
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Product details
Overview
STM32L052T8Y6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in a 32-pin UFQFPN (5 × 5 mm) package, featuring 64 KB Flash, 8 KB SRAM, 2 KB EEPROM with ECC, 12-bit ADC (1.14 Msps), and USB 2.0 crystal-less interface. It operates from 1.65–3.6 V across –40 to +125 °C and delivers 0.8 µA Stop mode + RTC + 8-KB RAM retention for battery-powered sensor nodes and portable medical devices.
For engineers reviewing the STM32L052T8Y6TR datasheet, STM32L052T8Y6TR pinout, STM32L052T8Y6TR application, or STM32L052T8Y6TR equivalent, key selection criteria include ultra-low-power mode timing (3.5 µs wakeup from RAM), USB crystal-less operation, 45 5V-tolerant I/Os, integrated true RNG and firewall protection, and support for capacitive touch sensing up to 24 channels.
Technical Context
The STM32L052T8Y6TR integrates an Arm Cortex-M0+ core with MPU, running at up to 32 MHz (0.95 DMIPS/MHz), and employs dynamic voltage scaling to optimize power across operating modes. Its clock system includes factory-trimmed 16 MHz HSI (+/−1%), self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE for RTC calibration.
It implements a multi-layer interconnect matrix enabling concurrent peripheral access without bus contention, and supports hardware-accelerated CRC, 96-bit unique ID, and memory sector protection against unauthorized read/write - critical for secure firmware updates in constrained-edge devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+ with MPU, 32 MHz max - enables deterministic real-time control with memory protection for certified firmware partitions. |
| Flash / SRAM / EEPROM | 64 KB Flash (ECC), 8 KB SRAM, 2 KB EEPROM (ECC) - ensures data integrity in wear-intensive logging and parameter storage. |
| Power Modes | 0.27 µA Standby (2 wakeup pins), 0.8 µA Stop+RTC+RAM retention - extends coin-cell life beyond 10 years in always-on monitoring. |
| ADC | 12-bit, 1.14 Msps, 16-channel, operational down to 1.65 V - supports high-resolution analog sensing without external supply boosting. |
| USB Interface | Crystal-less USB 2.0 FS with battery charging detection - eliminates external crystal and reduces BOM cost and PCB area. |
| Capacitive Sensing | 24-channel TSC supporting touchkey/linear/rotary sensors - enables direct integration of intuitive HMI without dedicated controller IC. |
| Security | True RNG, firewall protection, 96-bit unique ID - meets basic requirements for device authentication and secure boot in IoT endpoints. |
Pinout & Package
STM32L052T8Y6TR uses a 32-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN) package measuring 5 × 5 × 0.55 mm, compliant with ECOPACK2 environmental standards and suitable for space-constrained industrial and wearable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power supply and ground rails | Dual-domain supply separation enables precise analog measurement (VDDA) while digital logic (VDD) scales dynamically for lowest active power. |
| PA0–PA15, PB0–PB11, PC13–PC15 | General-purpose I/Os | 45 total I/Os (40 on T8 variant); 45 are 5V-tolerant - simplifies level-shifting in mixed-voltage systems interfacing with legacy peripherals. |
| PA11/PA12 | USB D+/D− | Dedicated crystal-less USB FS interface - supports full-speed enumeration and battery charging detection without external oscillator. |
| PA0, PA1, PB0, PB1, etc. | Wakeup inputs | 2 dedicated Standby wakeup pins + 16 Stop mode wakeup lines - enables selective low-power event response without full MCU wake. |
| NRST | Active-low reset | Internal pull-up; supports external reset assertion and SWD debug reset - ensures robust recovery from brownout or software lockup. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode + RTC + 8-KB RAM retention | 0.8 µA - preserves volatile context and timekeeping during extended sleep, reducing backup battery drain in metering applications. |
| Self-calibrating 48 MHz RC oscillator (HSI48) | Enables USB FS operation without external crystal - cuts component count and improves reliability in vibration-prone environments. |
| Hardware CRC calculation unit | Accelerates firmware image verification and data packet integrity checks - offloads CPU and ensures deterministic timing for safety-critical updates. |
| 2× ultra-low-power comparators | Operate down to 1.65 V with window mode and wake capability - replaces discrete comparator circuits in battery voltage monitoring and threshold alerting. |
| Touch Sensing Controller (TSC) | 24-channel capacitive sensing with built-in acquisition and noise filtering - eliminates external touch controller IC and associated firmware overhead. |
Applications
| Smart Utility Metering | Portable Medical Sensors |
|---|---|
Use Scenario: Battery-powered water/gas meters performing hourly pulse counting, temperature logging, and RF transmission. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, EEPROM-based lifetime data storage, and low-duty-cycle sub-GHz radio wake/sleep coordination. Use Value: 0.27 µA Standby current and 3.5 µs RAM wakeup enable >15-year battery life with periodic burst communication. | Use Scenario: Disposable ECG patch continuously sampling biopotentials and transmitting via BLE gateway. IC Role / Device Role / Timing Role: Analog front-end processor handling 12-bit ADC sampling, real-time QRS detection, and encrypted data buffering before wireless upload. Use Value: 12-bit ADC operating at 1.65 V supply allows direct connection to low-noise op-amp stages without LDO overhead. |
| Industrial Wireless Node | Secure Access Token |
Use Scenario: Vibration/temperature node in predictive maintenance system, sleeping between 10-second sensor bursts. IC Role / Device Role / Timing Role: Sensor hub aggregating accelerometer and thermistor data, applying FIR filtering, and triggering LoRaWAN uplink on threshold exceedance. Use Value: 2 KB EEPROM with ECC stores calibrated sensor offsets and fault logs across 100k+ write cycles without degradation. | Use Scenario: Physical security token generating one-time passwords and validating cryptographic signatures offline. IC Role / Device Role / Timing Role: Secure execution environment hosting HMAC-SHA256 engine, true RNG seed source, and protected key storage in firewall-protected memory. Use Value: Integrated true RNG and memory firewall meet ISO/IEC 19790 Level 2 requirements for cryptographic module integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L072KBU6 | 64 KB Flash, 20 KB SRAM, no USB, adds AES-128 accelerator | Better suited for encrypted sensor-to-cloud pipelines without local USB connectivity | Select when cryptographic acceleration outweighs USB requirement and larger SRAM enables complex protocol stacks. |
| STM32L432KCU6 | Cortex-M4F core, 256 KB Flash, 64 KB SRAM, USB, higher active power (110 µA/MHz) | Targeted at sensor fusion and real-time FFT processing where compute density justifies higher power budget | Choose when floating-point math, DSP instructions, or larger code footprint demand M4F architecture despite 3× higher Run-mode current. |
Compared with STM32L072KBU6, the STM32L052T8Y6TR trades SRAM and crypto acceleration for USB integration and lower static power; versus STM32L432KCU6, it prioritizes sub-µA sleep efficiency over computational throughput - making it optimal for energy-harvested or long-life battery nodes where USB device functionality is essential.
Availability
STM32L052T8Y6TR is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, industrial wireless nodes, and secure access tokens requiring stable component supply across extended product lifecycles.
Supply support for STM32L052T8Y6TR 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, designing and manufacturing microcontrollers, power management ICs, MEMS, and automotive semiconductors with strong focus on energy efficiency and industrial reliability.
The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, secure firmware execution, and rich analog integration - optimized for metering, wearables, and IoT edge nodes where every nanoamp matters.
FAQ
What is the maximum operating frequency and core type of the STM32L052T8Y6TR?
The STM32L052T8Y6TR features an Arm Cortex-M0+ core rated for up to 32 MHz operation, delivering 0.95 DMIPS per MHz. It includes a Memory Protection Unit (MPU) and supports Thumb-2 instruction set. The core is factory-calibrated and operates across the full industrial temperature range (–40 to +125 °C) at supply voltages from 1.65 V to 3.6 V.
Does the STM32L052T8Y6TR support USB without an external crystal?
Yes - it integrates a self-calibrating 48 MHz RC oscillator (HSI48) specifically designed for crystal-less USB Full-Speed (12 Mbps) operation. This eliminates the need for an external 48 MHz crystal or oscillator, reducing BOM cost and PCB layout complexity while maintaining USB compliance and battery charging detection capability.
How many I/O pins are 5V-tolerant, and what is the package type?
The STM32L052T8Y6TR provides 45 5V-tolerant I/Os across its 32-pin UFQFPN (5 × 5 mm) package. Pin compatibility with other STM32L052x8 variants in LQFP32 and UFQFPN32 packages is maintained per ST's pinout definition tables, enabling drop-in migration within the same density grade.
What low-power modes does the STM32L052T8Y6TR support, and what are their typical currents?
It supports five low-power modes: Sleep (140 µA @ 32 MHz), Low-power Run (110 µA), Low-power Sleep (25 µA), Stop (0.4 µA with 16 wakeup lines), and Standby (0.27 µA with 2 wakeup pins). In Stop mode with RTC and 8 KB RAM retention, current is 0.8 µA - verified per DS10182 Rev 10 electrical characteristics tables.
STM32L052T8Y6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 36-UFBGA, WLCSP
- Series:
- STM32L0
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 29
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L052T8Y6TR FAQ
1.How can I place an order for STM32L052T8Y6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L052T8Y6TR 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 STM32L052T8Y6TR reliable?
The price and inventory of STM32L052T8Y6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L052T8Y6TR is usually 5 days.
3.What payment methods are accepted for STM32L052T8Y6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L052T8Y6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L052T8Y6TR?
STM32L052T8Y6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L052T8Y6TR 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 STM32L052T8Y6TR?
For technical support, including STM32L052T8Y6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L052T8Y6TR requirements.
6.How does Aetrix verify that STM32L052T8Y6TR is sourced from the original manufacturer or authorized distributors?
All STM32L052T8Y6TR 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 STM32L052T8Y6TR meets industry standards.
7.What is the process for return or replacement of STM32L052T8Y6TR?
All STM32L052T8Y6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L052T8Y6TR, 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 STM32L052T8Y6TR part is unused and in its original packaging.
Return procedure for STM32L052T8Y6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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