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STMicroelectronics STM32L053C6T6
- Part No.:
- STM32L053C6T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32L053C6T6.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,411
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Product details
Overview
STM32L053C6T6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP48 package, featuring 32 KB Flash, 8 KB SRAM, 2 KB EEPROM with ECC, integrated 12-bit ADC (1.14 Msps), and single 12-bit DAC. It operates from 1.65–3.6 V across –40 to +125 °C and supports USB 2.0 crystal-less operation - ideal for battery-powered industrial sensors and portable medical devices.
For engineers reviewing the STM32L053C6T6 datasheet, STM32L053C6T6 pinout, STM32L053C6T6 application, or STM32L053C6T6 equivalent, key selection criteria include its 0.4 µA Stop mode current, 3.5 µs wake-up from RAM, LCD driver support (up to 8×28 segments), and dual ultra-low-power comparators with wake-up capability down to 1.65 V.
Technical Context
The STM32L053C6T6 implements a tightly coupled Arm Cortex-M0+ core with MPU, running at up to 32 MHz using multiple clock sources: HSI16 (±1%), LSE (32 kHz RTC), MSI (65 kHz–4.2 MHz), and PLL. Its low-power architecture integrates dynamic voltage scaling and seven low-power modes - including Standby (0.27 µA) and Stop + RTC + 8 KB RAM retention (0.8 µA).
Analog subsystem includes a 12-bit ADC with 16 channels, 12-bit DAC with output buffer, two rail-to-rail comparators (window mode + wake-up), and a temperature sensor with factory calibration. The device also embeds a touch sensing controller (TSC) supporting up to 24 capacitive sensing channels for touchkey/rotary applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max, 0.95 DMIPS/MHz - enables real-time control with minimal power overhead |
| Memory | 32 KB Flash (ECC), 8 KB SRAM, 2 KB EEPROM (ECC) - supports robust firmware storage and data logging in harsh environments |
| Power Consumption | 0.4 µA Stop mode, 0.8 µA Stop + RTC + 8 KB RAM retention - extends battery life in intermittent-sensing applications |
| ADC | 12-bit, 1.14 Msps, 16-channel - captures fast analog transients (e.g., pulse oximetry, vibration monitoring) |
| DAC | 12-bit, buffered single channel, operational down to 1.8 V - drives analog actuators or reference voltages without external op-amps |
| USB | Crystal-less USB 2.0 FS, battery charging detection - eliminates external crystal and simplifies BOM for portable USB peripherals |
| Wake-up Time | 3.5 µs from RAM, 5 µs from Flash - meets sub-10 µs latency requirements for responsive sensor wake-up events |
Pinout & Package
LQFP48 (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK2 certified. Pin count and I/O mapping validated per STMicroelectronics DS10152 Rev 10, Section 4 (Pin descriptions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary 1.65–3.6 V domain; decoupling required per datasheet layout guidelines |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD12, PH0–PH1 | General-purpose I/Os | Up to 45 pins 5V-tolerant; configurable as GPIO, AF, or analog - enables flexible peripheral routing and legacy interface compatibility |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB2, PB10, PB11, PC0–PC7, PD0–PD2, PH0, PH1 | Capacitive sensing inputs | Supports 24-channel TSC for touchkey, linear, and rotary sensors - no external components needed for basic touch UI |
| PA11, PA12 | USB D+/D− | Crystal-less full-speed USB interface - integrates internal oscillator and trimming for ±0.25% accuracy |
| PA0, PB0, PB1 | ADC IN0–IN3 | 12-bit ADC input channels with internal sampling capacitor - supports direct connection to resistive sensors or signal-conditioned outputs |
| PA4 | DAC OUT1 | Buffered 12-bit DAC output - drives loads ≥5 kΩ directly; supports voltage reference or analog actuator control |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode | 0.4 µA with 16 wake-up lines - enables long-term sleep between sensor readings while retaining full interrupt flexibility |
| On-chip LCD driver | Supports up to 8×28 segments with contrast adjustment and blinking - eliminates external LCD controller in portable instrumentation |
| True RNG and firewall | Hardware random number generator + memory protection unit - satisfies IEC 62443 and ISO 13849 functional safety prerequisites |
| Preprogrammed bootloader | USART and SPI interfaces supported - allows field firmware updates without JTAG/SWD hardware |
| Serial wire debug (SW-DP) | Single-pin debug interface - reduces test point count and simplifies PCB layout for space-constrained designs |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-operated gas/water meter with hourly pressure/flow sampling and LCD display. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, LCD refresh, RTC-based scheduling, and secure data logging to EEPROM. Use Value: 0.27 µA Standby current and 8 KB RAM retention enable >10-year battery life; integrated LCD driver reduces component count by 3+ ICs. | Use Scenario: Handheld electrocardiogram device acquiring analog leads, processing waveform, and displaying results on segmented LCD. IC Role / Device Role / Timing Role: Signal acquisition MCU handling 12-bit ADC sampling at 1 kHz, real-time filtering via Cortex-M0+, and driving 8×28 LCD segments. Use Value: 1.14 Msps ADC resolves sub-mV cardiac signals; DAC provides calibrated reference voltage for analog front-end offset correction. |
| Industrial Wireless Sensor Node | Low-Power HVAC Controller |
Use Scenario: Zigbee/Bluetooth LE node measuring temperature/humidity, transmitting data every 5 minutes, and sleeping otherwise. IC Role / Device Role / Timing Role: Host MCU interfacing with digital sensors (I²C), managing radio coexistence, and executing low-power state machine. Use Value: 3.5 µs wake-up from RAM ensures rapid response to sensor interrupts; 2 KB EEPROM stores calibration coefficients with ECC protection. | Use Scenario: Wall-mounted thermostat controlling fan speed, valve position, and ambient display using local temperature/humidity feedback. IC Role / Device Role / Timing Role: Real-time controller executing PID loops, driving PWM fans/valves, and updating LCD with user interface. Use Value: Dual ultra-low-power comparators monitor windowed thresholds for overtemperature shutdown; USB crystal-less interface enables firmware updates via service port. |
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 |
|---|---|---|---|
| STM32L053R6T6 | LQFP64 package, 51 I/Os (vs. 45), same peripherals and memory - adds GPIO headroom and extra USART/SPI channels | Suitable for designs requiring more external interfaces or future expansion without changing firmware logic | Select when board layout allows larger footprint and additional I/Os are needed for sensor fusion or communication redundancy |
| STM32L073RZT6 | 64 KB Flash, 20 KB SRAM, USB + CAN, no LCD driver - higher memory and protocol support, but lacks integrated display control | Better suited for gateway-class nodes needing CAN bus integration or larger code base, not LCD-centric devices | Choose only if CAN interface or >32 KB Flash is mandatory; avoid if LCD or EEPROM retention is critical |
Compared with STM32L053R6T6, the C6T6 saves board area and cost in space-constrained designs; versus STM32L073RZT6, it trades CAN and Flash capacity for lower static current and integrated LCD - making it optimal for compact, display-driven, battery-limited applications.
Availability
STM32L053C6T6 is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial wireless sensor nodes, and low-power HVAC controllers requiring stable component supply throughout product lifecycles.
Supply support for STM32L053C6T6 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 - optimized for battery longevity, wide temperature operation, and integrated analog peripherals in compact packages.
FAQ
What is the maximum operating frequency of the STM32L053C6T6?
The STM32L053C6T6 runs at up to 32 MHz using its internal HSI16 oscillator (±1% factory trim) or external crystal. Frequency scaling is dynamically managed via the voltage regulator and power control block to maintain stability across 1.65–3.6 V supply range and –40 to +125 °C temperature.
Does the STM32L053C6T6 support USB without an external crystal?
Yes - it integrates a 48 MHz HSI48 oscillator with automatic frequency calibration for crystal-less USB 2.0 Full-Speed operation. This eliminates the need for an external 8/12 MHz crystal and associated load capacitors, reducing BOM cost and PCB area in portable USB devices.
How many capacitive sensing channels does the STM32L053C6T6 support?
The device supports up to 24 capacitive sensing channels via its Touch Sensing Controller (TSC), using dedicated GPIOs across ports A, B, C, D, and H. These channels support touchkey, linear, and rotary touch sensors with built-in charge transfer measurement and noise immunity features.
Is the 2 KB EEPROM truly persistent with ECC protection?
Yes - the 2 KB data EEPROM includes hardware error-correcting code (ECC) that detects and corrects single-bit errors during read/write operations. It retains data for 10 years at 85 °C and supports 100,000 write/erase cycles, verified per STMicroelectronics characterization in DS10152 Rev 10, Table 52.
STM32L053C6T6 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:
- 32KB (32K 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:
STM32L053C6T6 FAQ
1.How can I place an order for STM32L053C6T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L053C6T6 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 STM32L053C6T6 reliable?
The price and inventory of STM32L053C6T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L053C6T6 is usually 5 days.
3.What payment methods are accepted for STM32L053C6T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L053C6T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L053C6T6?
STM32L053C6T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L053C6T6 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 STM32L053C6T6?
For technical support, including STM32L053C6T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L053C6T6 requirements.
6.How does Aetrix verify that STM32L053C6T6 is sourced from the original manufacturer or authorized distributors?
All STM32L053C6T6 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 STM32L053C6T6 meets industry standards.
7.What is the process for return or replacement of STM32L053C6T6?
All STM32L053C6T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L053C6T6, 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 STM32L053C6T6 part is unused and in its original packaging.
Return procedure for STM32L053C6T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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