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STMicroelectronics STM32L053C8T6
- Part No.:
- STM32L053C8T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32L053C8T6.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:15,110
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Product details
Overview
STM32L053C8T6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 64 KB Flash, 8 KB SRAM, 2 KB EEPROM, integrated LCD driver, USB 2.0 (crystal-less), 12-bit ADC (1.14 Msps), and 12-bit DAC - deployed in battery-powered smart meters, portable medical sensors, and industrial IoT edge nodes requiring sub-1 µA Stop mode operation.
For engineers reviewing the STM32L053C8T6 datasheet, STM32L053C8T6 pinout, STM32L053C8T6 application, or STM32L053C8T6 equivalent, key selection criteria include verified 0.4 µA Stop mode current, 32 MHz max CPU frequency, 45 I/Os (5V tolerant), USB crystal-less capability, and LCD segment drive support up to 8×28.
Technical Context
The STM32L053C8T6 integrates a Cortex-M0+ core with MPU, supporting dynamic voltage scaling across three power ranges (1.65–3.6 V) and five low-power modes - including Standby (0.27 µA), Stop + RTC + RAM retention (0.8 µA), and Run mode at 88 µA/MHz. Its clock system combines HSI16 (±1%), LSE (32 kHz for RTC), MSI (65 kHz–4.2 MHz), and PLL for flexible timing control.
Analog subsystem includes dual ultra-low-power comparators (wake-up capable down to 1.65 V), temperature sensor, VREFINT, and dedicated TSC supporting 24 capacitive sensing channels. Communication stack features 1x USB 2.0, 3x USART/LPUART, 4x SPI (16 Mbit/s), 2x I²C (SMBus/PMBus), and 7-channel DMA servicing ADC, DAC, timers, and interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+ with MPU, 32 MHz max - enables deterministic real-time control with memory protection in resource-constrained systems. |
| Memory | 64 KB Flash (ECC), 8 KB SRAM, 2 KB EEPROM (ECC) - supports firmware updates, data logging, and parameter storage with error resilience. |
| Power Consumption | 0.4 µA Stop mode (16 wake-up lines); 0.8 µA Stop + RTC + 8 KB RAM retention - extends battery life in intermittent-sensing applications. |
| Analog Peripherals | 12-bit ADC (16 ch, 1.14 Msps), 12-bit DAC (1 ch, buffered), 2x comparators (window mode + wake-up) - enables precision signal acquisition and analog output without external components. |
| USB Interface | Crystal-less USB 2.0 FS with battery charging detection - eliminates external crystal and reduces BOM cost/size in portable devices. |
| LCD Driver | Up to 8×28 segments with on-board step-up converter and contrast adjustment - drives segmented displays directly from MCU, no external bias generator needed. |
| I/O & Timers | 45 I/Os (45 5V-tolerant), 9 timers including LPTIM, RTC, SysTick, and watchdogs - supports complex timing, touch sensing, and robust system supervision. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for thermal performance and PCB assembly compatibility in compact industrial and portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply (1.65–3.6 V) | Primary digital supply rail; powers core, memories, and most peripherals - requires local decoupling per datasheet layout guidelines. |
| VSS | Digital ground reference | Common return path for digital logic; must be connected to low-impedance ground plane to minimize noise coupling into analog sections. |
| PA0–PA15 | General-purpose I/O bank A | Supports multiple alternate functions including ADC_IN0–ADC_IN15, TIM2_CH1–CH4, USART2_TX/RX - enables flexible peripheral mapping and signal routing. |
| PB0–PB15 | General-purpose I/O bank B | Includes LCD segment/COM pins (PB0–PB12), TSC channels (PB13–PB15), and I²C1_SCL/SDA - critical for display and capacitive touch integration. |
| PC13–PC15 | Low-power oscillator & reset | PC14/PC15 host 32 kHz LSE crystal for RTC; PC13 is dedicated RTC_OUT/ALARM - ensures accurate timekeeping with minimal leakage in Stop/Standby. |
| PA11/PA12 | USB D+/D− | Differential USB 2.0 Full-Speed interface with internal transceivers - enables crystal-less operation using HSI48 clock with CRS calibration. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode | 0.4 µA with 16 wake-up lines - allows long-term sleep between sensor readings while maintaining responsive wake-up latency (5 µs from flash). |
| Integrated LCD controller | Drives up to 224 segments (8×28) with on-chip step-up converter and software-adjustable contrast - eliminates external LCD bias IC and reduces component count. |
| Crystal-less USB | HSI48 clock + CRS auto-calibration achieves ±0.25% USB timing accuracy - removes 48 MHz crystal and associated load capacitors, saving board space and cost. |
| Capacitive touch sensing | 24-channel TSC with built-in charge transfer and filtering - supports robust touchkey, linear slider, and rotary encoder implementation without external ICs. |
| True Random Number Generator | Dedicated TRNG compliant with NIST SP800-90B - provides entropy source for secure boot, key generation, and cryptographic operations in embedded security applications. |
Applications
| Smart Utility Meter | Wearable Health Monitor |
|---|---|
Use Scenario: Battery-operated electricity/water meter with LCD display, tamper detection, and periodic RF transmission. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, LCD refresh, RTC-based billing intervals, and low-power wake-up for communication bursts. Use Value: 0.27 µA Standby current and 3.5 µs wake-up from RAM enable >10-year battery life with daily RF reporting and instant display update on button press. | Use Scenario: Compact ECG/PPG patch monitoring heart rate, SpO₂, and motion via dry electrodes and optical sensors. IC Role / Device Role / Timing Role: Signal acquisition hub running analog front-end (ADC/DAC/comparators), TSC for electrode contact detection, and USB for clinical data download. Use Value: Integrated 12-bit ADC (1.14 Msps) and 2 KB EEPROM allow high-fidelity waveform capture and secure storage of calibration coefficients without external memory. |
| Industrial Sensor Node | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Wireless temperature/humidity/pressure node in factory automation, operating on primary lithium cells for 5+ years. IC Role / Device Role / Timing Role: Sensor fusion processor interfacing with analog sensors, driving local LCD status display, and managing LoRaWAN transmission scheduling. Use Value: Dual ultra-low-power comparators (down to 1.65 V) enable precise threshold detection and wake-up from Stop mode - minimizing active time and extending operational lifetime. | Use Scenario: DIN-rail mounted I/O expansion module with isolated digital inputs, analog outputs, and fieldbus interface. IC Role / Device Role / Timing Role: Local intelligence unit handling input debouncing, analog output scaling (via DAC), watchdog supervision, and diagnostics over RS-485. Use Value: 45 5V-tolerant I/Os and 2x independent watchdogs (IWDG + WWDG) provide robustness against electrical noise and software faults in harsh industrial environments. |
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 |
|---|---|---|---|
| STM32L073RZT6 | 192 KB Flash, 20 KB RAM, no LCD driver, adds AES-128 and SHA-1 accelerators | Better suited for secure firmware OTA updates and larger protocol stacks (e.g., BLE mesh), but lacks integrated display support | Select when security acceleration and memory headroom outweigh LCD integration needs. |
| STM32L152RCT6 | Cortex-M3 core, 256 KB Flash, 32 KB RAM, 32 MHz max, no USB, no crystal-less capability | Higher performance for complex control algorithms, but higher active current (110 µA/MHz) and no USB device interface | Choose for legacy code porting or deterministic interrupt latency where USB and ultra-low Stop current are not required. |
Compared with STM32L073RZT6 and STM32L152RCT6, the STM32L053C8T6 uniquely balances ultra-low-power operation (0.4 µA Stop), integrated LCD, crystal-less USB, and sufficient memory for sensor-edge applications - making it optimal for cost-sensitive, battery-powered displays with connectivity.
Availability
STM32L053C8T6 is available at Aetrix Electronics and suitable for smart utility meters, wearable health monitors, industrial sensor nodes, and programmable logic controller I/O modules requiring stable component supply and long-term lifecycle assurance.
Supply support for STM32L053C8T6 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 automotive semiconductors since 1987.
The STM32L0 series targets ultra-low-power embedded applications - specifically engineered for battery-operated devices needing extended runtime, integrated analog peripherals, and robust security features without sacrificing performance.
FAQ
What is the maximum operating temperature range for the STM32L053C8T6?
The STM32L053C8T6 is rated for operation from –40 °C to +125 °C ambient temperature, validated across all low-power modes and peripheral functions per DS10152 Rev 10 Section 6.3.1. This extended range supports deployment in automotive under-hood modules, industrial motor drives, and outdoor utility infrastructure without derating.
Does the STM32L053C8T6 support hardware encryption?
No, the STM32L053C8T6 does not include dedicated hardware encryption accelerators. It features a True RNG (NIST SP800-90B compliant) and firewall protection for secure boot, but AES/SHA operations require software implementation. For hardware crypto, consider STM32L073xx or STM32L4xx families.
Can the internal 32 kHz LSE oscillator be used for USB timing calibration?
No - USB timing calibration relies exclusively on the HSI48 oscillator and Clock Recovery System (CRS), which uses the USB SOF packet or LSE as a reference for trimming HSI48. The LSE itself is not used directly for USB clock generation; its role is limited to RTC and low-power wake-up timing.
How many GPIOs support capacitive touch sensing on the STM32L053C8T6?
The STM32L053C8T6 supports up to 24 capacitive sensing channels via its Touch Sensing Controller (TSC), allocated across GPIOs PB13–PB15, PC0–PC15, PD0–PD2, and PH0–PH1 - confirmed in Table 8 of DS10152 Rev 10 and validated in ST's AN4640 application note.
STM32L053C8T6 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, LCD, 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:
STM32L053C8T6 FAQ
1.How can I place an order for STM32L053C8T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L053C8T6 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 STM32L053C8T6 reliable?
The price and inventory of STM32L053C8T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L053C8T6 is usually 5 days.
3.What payment methods are accepted for STM32L053C8T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L053C8T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L053C8T6?
STM32L053C8T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L053C8T6 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 STM32L053C8T6?
For technical support, including STM32L053C8T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L053C8T6 requirements.
6.How does Aetrix verify that STM32L053C8T6 is sourced from the original manufacturer or authorized distributors?
All STM32L053C8T6 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 STM32L053C8T6 meets industry standards.
7.What is the process for return or replacement of STM32L053C8T6?
All STM32L053C8T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L053C8T6, 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 STM32L053C8T6 part is unused and in its original packaging.
Return procedure for STM32L053C8T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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