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STMicroelectronics STM32L052C8T6D
- Part No.:
- STM32L052C8T6D
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32L052C8T6D.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,888
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Product details
Overview
STM32L052C8T6D from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 64 KB Flash, 8 KB SRAM, 2 KB EEPROM, USB 2.0 (crystal-less), and a 12-bit ADC (1.14 Msps). It operates from 1.65 V to 3.6 V across –40 °C to +125 °C and achieves 0.27 µA Standby current with 2 wakeup pins - deployed in battery-powered industrial sensors and portable medical monitors.
For engineers reviewing the STM32L052C8T6D datasheet, STM32L052C8T6D pinout, STM32L052C8T6D application, or STM32L052C8T6D equivalent, key selection criteria include ultra-low-power mode timing (3.5 µs RAM wakeup), integrated USB crystal-less PHY for space-constrained designs, ECC-protected memory architecture, and 45 5V-tolerant I/Os supporting capacitive touch sensing.
Technical Context
The STM32L052C8T6D integrates an Arm Cortex-M0+ core with MPU, running at up to 32 MHz with 0.95 DMIPS/MHz performance. Its clock system includes factory-trimmed 16 MHz HSI (+/−1%), self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE for RTC with calibration support.
Power management features include five BOR thresholds, programmable voltage detector (PVD), and multiple low-power modes: Stop mode (0.4 µA), Stop+RTC+RAM retention (0.8 µA), and Standby (0.27 µA). Analog peripherals comprise a 12-bit ADC (16-channel, down to 1.65 V), 12-bit DAC with buffer (down to 1.8 V), and two ultra-low-power comparators with window mode and wake-up capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max, 0.95 DMIPS/MHz - enables deterministic real-time control in energy-constrained edge nodes. |
| Memory | 64 KB Flash (ECC), 8 KB SRAM, 2 KB EEPROM (ECC) - supports firmware updates and data logging with error resilience. |
| Low-Power Modes | 0.27 µA Standby (2 wakeup pins), 0.4 µA Stop (16 wakeup lines), 0.8 µA Stop+RTC+8 KB RAM retention - extends coin-cell battery life to multi-year operation. |
| Analog Peripherals | 12-bit ADC (1.14 Msps, 16 channels, 1.65 V min), 12-bit DAC (1 channel, buffered, 1.8 V min), 2x comparators - enables sensor signal acquisition and analog output without external components. |
| USB Interface | USB 2.0 full-speed, crystal-less, with battery charging detection and LPM - eliminates external crystal and reduces BOM cost/footprint in portable devices. |
| I/O & Timing | 45 5V-tolerant GPIOs, 9 timers (including LPTIM, RTC, SysTick), 7-channel DMA - supports mixed-signal control, capacitive touch (24 channels), and peripheral offloading. |
| Operating Range | 1.65 V to 3.6 V supply, –40 °C to +125 °C ambient - certified for industrial and automotive under-hood environments. |
Pinout & Package
STM32L052C8T6D uses the LQFP32 (7 × 7 mm) package with 32-pin quad flat pack, lead-free and RoHS-compliant (ECOPACK2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply (1.65–3.6 V) | Supplies core and I/O domains; decoupling required per datasheet layout guidelines. |
| VSS | Ground reference | Dedicated analog/digital ground pins ensure noise isolation for ADC/DAC operation. |
| NRST | Active-low reset input | Accepts external reset pulse or internal BOR/POR; supports programmable reset timing. |
| PA0–PA15 | General-purpose I/O / alternate functions | Supports UART, SPI, I2C, TIM, ADC, TSC - 45 total I/Os (45 5V-tolerant on C8 variant). |
| PA11/PA12 | USB D+/D− | Crysal-less USB interface; internal transceiver with automatic calibration and battery charge detection. |
| PC13–PC15 | RTC oscillator inputs / tamper | Connects 32.768 kHz crystal for RTC; PC14/PC15 support calibration and tamper detection. |
Key Features
| Feature | Design Value |
|---|---|
| ECC-protected memory | 64 KB Flash and 2 KB EEPROM with error correction - prevents silent data corruption in long-life deployments. |
| Crystal-less USB | Integrated 48 MHz HSI48 with self-calibration against USB SOF - removes external crystal and saves PCB area/cost. |
| Ultra-low-power comparators | 2x comparators with window mode and wake-up from Stop/Standby - enables autonomous analog event detection without CPU wake. |
| Capacitive touch controller | 24-channel TSC supporting touchkey, linear, and rotary sensors - eliminates external touch IC in human-interface applications. |
| Multi-speed internal RC oscillators | MSI (65 kHz–4.2 MHz), LSI (37 kHz), HSI16 (16 MHz ±1%), HSI48 (48 MHz calibrated) - provides flexible clock sources without external components. |
Applications
| Industrial Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Wireless temperature/humidity node powered by CR2032 battery with 10-year target lifetime. IC Role / Device Role / Timing Role: Main controller executing sensor readout, BLE packet assembly, and ultra-low-power scheduling via RTC and LPTIM. Use Value: 0.27 µA Standby current and 3.5 µs wakeup from RAM enable sub-µA average system current and responsive wake-on-event behavior. | Use Scenario: Handheld ECG device with analog front-end, display, and USB data export. IC Role / Device Role / Timing Role: Signal processor interfacing 12-bit ADC, driving DAC for reference generation, and managing crystal-less USB for clinical data transfer. Use Value: Integrated 12-bit ADC (1.14 Msps) and DAC with buffer allow direct sensor-to-USB path without external precision analog components. |
| Smart Utility Meter | Asset Tracking Beacon |
Use Scenario: Battery-operated gas/water meter with pulse counting, LCD drive, and RF communication. IC Role / Device Role / Timing Role: System-on-chip handling metrology calculations, LCD segment control, tamper detection (PC13–PC15), and secure boot. Use Value: 2 KB EEPROM with ECC stores calibration data and usage logs reliably over 20+ years; tamper-detect pins trigger secure erase. | Use Scenario: GPS-denied indoor asset tag using accelerometer, BLE, and periodic location reporting. IC Role / Device Role / Timing Role: Low-power coordinator managing motion-triggered wake, sensor fusion, and BLE advertising intervals via LPTIM. Use Value: 45 5V-tolerant I/Os simplify interface to diverse sensors; 0.8 µA Stop+RTC+RAM retention preserves context during deep sleep between reports. |
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 |
|---|---|---|---|
| STM32L072CZT6 | 128 KB Flash, 20 KB RAM, no USB, adds AES-128 and true RNG | Better suited for secure firmware updates and encrypted wireless transmission | Select when cryptographic acceleration and larger code space outweigh USB requirement |
| STM32L011K4T6 | 16 KB Flash, 2 KB RAM, no USB, no DAC, fewer timers and I/Os | Targeted at minimal-cost, single-function sensor endpoints | Select only when application fits within 16 KB Flash and requires no USB or analog output |
Compared with STM32L072CZT6, the STM32L052C8T6D trades security peripherals and memory for integrated USB and DAC - making it optimal for compact, battery-powered devices needing wired data export and analog stimulus. Against STM32L011K4T6, it delivers 4× more Flash, USB, DAC, and 2× more I/Os at modest cost increase - justifying upgrade for feature-rich edge nodes.
Availability
STM32L052C8T6D is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart utility meters, and asset tracking beacons requiring stable component supply across extended product lifecycles.
Supply support for STM32L052C8T6D 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, sensors, and analog products for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, robust analog integration, and secure firmware execution - optimized for IoT edge nodes and portable instrumentation.
FAQ
What is the maximum operating frequency of the STM32L052C8T6D?
The STM32L052C8T6D runs at up to 32 MHz using its internal 16 MHz HSI oscillator with PLL multiplication or external crystal sources. This frequency is sustained across the full 1.65–3.6 V supply range and –40 °C to +125 °C temperature range, with 0.95 DMIPS/MHz performance confirmed in production data.
Does the STM32L052C8T6D support USB without an external crystal?
Yes - it integrates a self-calibrating 48 MHz HSI48 RC oscillator synchronized to the USB Start-of-Frame (SOF) token, enabling full-speed USB 2.0 operation without external crystal or oscillator. This is validated in DS10182 Rev 10 Section 3.18.5 and electrical characteristics Table 47.
How many I/O pins are 5V tolerant on this device?
The STM32L052C8T6D provides 45 I/O pins with 5V tolerance, as specified in Table 2 of DS10182 Rev 10. This applies to all GPIOs except those dedicated to USB (PA11/PA12) and oscillator inputs (PC14/PC15), enabling direct interface to legacy 5V logic without level shifters.
What is the minimum supply voltage for ADC operation?
The 12-bit ADC operates down to 1.65 V supply voltage, maintaining full 1.14 Msps sampling rate and 16-channel capability. This is documented in Section 3.11 and electrical characteristics Table 63 of DS10182 Rev 10, ensuring reliable sensor acquisition even as battery voltage declines.
STM32L052C8T6D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- 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:
- 37
- 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 10x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L052C8T6D FAQ
1.How can I place an order for STM32L052C8T6D through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L052C8T6D 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 STM32L052C8T6D reliable?
The price and inventory of STM32L052C8T6D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L052C8T6D is usually 5 days.
3.What payment methods are accepted for STM32L052C8T6D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L052C8T6D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L052C8T6D?
STM32L052C8T6D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L052C8T6D 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 STM32L052C8T6D?
For technical support, including STM32L052C8T6D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L052C8T6D requirements.
6.How does Aetrix verify that STM32L052C8T6D is sourced from the original manufacturer or authorized distributors?
All STM32L052C8T6D 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 STM32L052C8T6D meets industry standards.
7.What is the process for return or replacement of STM32L052C8T6D?
All STM32L052C8T6D units undergo pre-shipment inspection (PSI). If there is an issue with STM32L052C8T6D, 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 STM32L052C8T6D part is unused and in its original packaging.
Return procedure for STM32L052C8T6D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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