My Inquiry
My Account
STMicroelectronics STM32L052R8H6
- Part No.:
- STM32L052R8H6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-TFBGA
- Datasheet:
-
STM32L052R8H6.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:22,629
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32L052R8H6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 64 KB Flash, 8 KB SRAM, and 2 KB EEPROM; features USB 2.0 (crystal-less), 12-bit ADC (1.14 Msps, 16 channels), and 12-bit DAC; used in battery-powered IoT sensor nodes requiring long runtime and mixed-signal integration.
For engineers reviewing the STM32L052R8H6 datasheet, STM32L052R8H6 pinout, STM32L052R8H6 application, or STM32L052R8H6 equivalent, key selection criteria include standby current (0.27 µA), USB crystal-less operation, 125 °C extended temperature rating, ECC-protected memory, and capacitive touch sensing support for wearables and smart meters.
Technical Context
The STM32L052R8H6 integrates a Cortex-M0+ core running up to 32 MHz with MPU, supported by multiple clock sources including factory-trimmed 16 MHz HSI (+/-1%), self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE for RTC. Its power architecture enables dynamic voltage scaling across five low-power modes.
Analog subsystem includes two ultra-low-power comparators (down to 1.65 V), a temperature sensor, VREFINT reference, and dedicated TSC peripheral supporting 24 capacitive sensing channels-enabling touchkey and rotary control without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max - delivers 0.95 DMIPS/MHz for deterministic real-time control in energy-constrained systems. |
| Memory | 64 KB Flash with ECC + 8 KB SRAM + 2 KB EEPROM with ECC - ensures data integrity and firmware resilience in industrial deployments. |
| Power Consumption | 0.27 µA Standby (2 wakeup pins) - enables multi-year battery life in coin-cell–powered remote sensors. |
| ADC | 12-bit, 1.14 Msps, 16-channel - supports high-resolution analog monitoring (e.g., battery voltage, thermistor, gas sensor) at full speed down to 1.65 V supply. |
| DAC | 12-bit, 1-channel with output buffer - provides precise analog output (e.g., bias voltage, calibration signal) down to 1.8 V operation. |
| USB Interface | USB 2.0 crystal-less with battery charging detection - eliminates external crystal and simplifies BOM for portable USB peripherals. |
| Operating Range | -40 °C to +125 °C, 1.65–3.6 V - qualified for automotive cabin modules, industrial edge controllers, and harsh-environment telemetry. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with 51 fast I/Os (45 tolerant to 5 V), supporting flexible signal routing and robust noise immunity in dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply (1.65–3.6 V) | Primary core and I/O domain input; requires local decoupling for stable low-power operation. |
| VSS | Ground reference | Dedicated analog/digital ground pins enable separation of noise-sensitive circuits. |
| PA0–PA15 | General-purpose I/O / Alternate functions | Support UART, SPI, I2C, ADC, DAC, timers, and capacitive sensing - configurable per application need. |
| USB_DP / USB_DM | USB 2.0 differential data lines | Certified crystal-less interface; internal oscillator eliminates external 48 MHz crystal and matching network. |
| NRST | Active-low reset input | Accepts external reset pulse or watchdog timeout; supports programmable reset threshold via PVD. |
| BOOT0 | Boot mode selection | High at power-up enables system memory bootloader (USART/SPI); critical for field firmware updates. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power standby mode | 0.27 µA with 2 wakeup pins active - preserves battery charge while maintaining responsive wake capability. |
| ECC-protected memory | Flash and EEPROM protected by hardware ECC - prevents silent data corruption in mission-critical logging or configuration storage. |
| Capacitive touch controller (TSC) | 24-channel support for touchkey/linear/rotary sensors - enables intuitive HMI without external IC or firmware overhead. |
| Crystal-less USB 2.0 | Internal 48 MHz HSI48 calibrated to ±0.25% - reduces BOM cost and board space vs. crystal-based solutions. |
| True random number generator (TRNG) | Firmware-accessible entropy source - meets cryptographic requirements for secure boot and key generation. |
Applications
| Smart Utility Meter | Wearable Health Monitor |
|---|---|
Use Scenario: Battery-operated electricity/water meter with tamper detection, pulse counting, and wireless upload. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, RTC timestamping, LoRaWAN stack execution, and secure firmware updates. Use Value: 0.4 µA Stop mode + RTC retention extends 10-year battery life; ECC Flash ensures firmware integrity over decades. | Use Scenario: Optical heart-rate sensor with ECG lead-off detection and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Analog front-end processor handling photodiode signal conditioning, ADC oversampling, and capacitive button interface. Use Value: 12-bit ADC at 1.14 Msps captures fast PPG waveforms; ultra-low-power comparators detect electrode contact loss at <1.65 V. |
| Industrial Wireless Sensor Node | Automotive Cabin Controller |
Use Scenario: Vibration/temperature node in predictive maintenance system using NB-IoT or Sigfox. IC Role / Device Role / Timing Role: Edge preprocessing unit performing FFT on accelerometer data, storing results in EEPROM, and waking radio only on event. Use Value: 5 µs wakeup from Flash enables rapid response to anomalies; 2 KB EEPROM retains calibration coefficients across power cycles. | Use Scenario: HVAC control panel with touch sliders, ambient light sensing, and CAN bus communication. IC Role / Device Role / Timing Role: Human interface manager handling capacitive touch, ambient ADC readings, and CAN message framing via USART-to-CAN bridge. Use Value: 45 5V-tolerant I/Os simplify interfacing with legacy automotive sensors; -40 to +125 °C rating ensures reliability under dashboard thermal stress. |
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 |
|---|---|---|---|
| STM32L072RBT6 | 128 KB Flash, 20 KB RAM, no USB - adds more memory but removes crystal-less USB interface. | Suitable for larger firmware footprints where USB is unnecessary (e.g., LoRa-only gateways). | Select when memory headroom outweighs USB requirement and cost sensitivity permits higher-tier part. |
| STM32L432KCU6 | Cortex-M4F core, FPU, 256 KB Flash, USB FS - higher performance and precision math, but higher active current (81 µA/MHz). | Better for sensor fusion algorithms (e.g., IMU + magnetometer) requiring floating-point acceleration. | Choose when computational load exceeds M0+ capacity and battery life allows ~3× higher Run-mode current. |
Compared with STM32L052R8H6, the STM32L072RBT6 trades USB for memory headroom, while the STM32L432KCU6 upgrades to M4F for compute-intensive tasks at the expense of ultra-low-power efficiency - making the R8H6 optimal for USB-connected, battery-limited edge nodes needing balanced analog/mixed-signal capability.
Availability
STM32L052R8H6 is available at Aetrix Electronics and suitable for smart utility meters, wearable health monitors, industrial wireless sensor nodes, and automotive cabin controllers requiring stable component supply across long product lifecycles.
Supply support for STM32L052R8H6 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 focus on energy efficiency and industrial reliability.
The STM32L0 series targets ultra-low-power embedded applications demanding extended battery life, robust analog integration, and secure firmware execution - optimized for IoT endpoints and resource-constrained edge devices.
FAQ
What is the maximum operating frequency and core type of the STM32L052R8H6?
The STM32L052R8H6 uses an Arm Cortex-M0+ core rated for up to 32 MHz operation, delivering 0.95 DMIPS/MHz. It supports dynamic voltage scaling to maintain performance across supply voltages from 1.65 V to 3.6 V, with factory-trimmed 16 MHz HSI oscillator accuracy of ±1% and self-calibrating 48 MHz HSI48 for USB timing compliance.
Does the STM32L052R8H6 support crystal-less USB operation?
Yes - the device integrates a self-calibrating 48 MHz HSI48 oscillator specifically designed for USB 2.0 Full-Speed operation without an external crystal. This feature is validated per USB-IF specifications and includes built-in battery charging detection circuitry, reducing BOM count and PCB area in portable USB peripherals.
How many I/O pins are 5V-tolerant, and what is the total I/O count?
The STM32L052R8H6 provides up to 51 fast I/Os, of which 45 are 5V-tolerant. This allows direct interfacing with legacy 5V logic, sensors, and displays without level-shifting circuitry - particularly valuable in industrial retrofit applications and mixed-voltage system designs where cost and board space are constrained.
What low-power modes does the STM32L052R8H6 support, and what are their typical current draws?
The device supports six low-power modes: Standby (0.27 µA, 2 wakeup pins), Stop (0.4 µA, 16 wakeup lines), Stop + RTC + 8 KB RAM retention (0.8 µA), Low-power Run (160 µA at 32 kHz), Low-power Sleep (120 µA), and Sleep (110 µA). All modes retain register content and support fast wakeup - 3.5 µs from RAM, 5 µs from Flash - enabling responsive event-driven operation.
STM32L052R8H6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-TFBGA
- Series:
- STM32L0
- Packaging:
- Tray
- 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:
- 51
- 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:
STM32L052R8H6 FAQ
1.How can I place an order for STM32L052R8H6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L052R8H6 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 STM32L052R8H6 reliable?
The price and inventory of STM32L052R8H6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L052R8H6 is usually 5 days.
3.What payment methods are accepted for STM32L052R8H6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L052R8H6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L052R8H6?
STM32L052R8H6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L052R8H6 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 STM32L052R8H6?
For technical support, including STM32L052R8H6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L052R8H6 requirements.
6.How does Aetrix verify that STM32L052R8H6 is sourced from the original manufacturer or authorized distributors?
All STM32L052R8H6 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 STM32L052R8H6 meets industry standards.
7.What is the process for return or replacement of STM32L052R8H6?
All STM32L052R8H6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L052R8H6, 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 STM32L052R8H6 part is unused and in its original packaging.
Return procedure for STM32L052R8H6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L052R8H6 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…
