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STMicroelectronics STM32L053R6H6
- Part No.:
- STM32L053R6H6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-TFBGA
- Datasheet:
-
STM32L053R6H6.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 64TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,614
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Product details
Overview
STM32L053R6H6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP64 package, featuring 32 MHz max CPU frequency, 32 KB Flash, 8 KB SRAM, 2 KB EEPROM with ECC, integrated LCD driver (8×28 segments), USB 2.0 crystal-less interface, and 12-bit ADC (1.14 Msps, 16 channels). It targets battery-powered portable instrumentation and smart sensors operating from 1.65–3.6 V across –40 to +125 °C.
For engineers reviewing the STM32L053R6H6 datasheet, STM32L053R6H6 pinout, STM32L053R6H6 application, or STM32L053R6H6 equivalent, key selection criteria include standby current (0.27 µA), wake-up time (3.5 µs from RAM), USB crystal-less operation, LCD segment drive capability, and dual ultra-low-power comparators with window mode.
Technical Context
The STM32L053R6H6 implements a tightly coupled Arm Cortex-M0+ core with Memory Protection Unit (MPU), supporting dynamic voltage scaling and multiple low-power modes including Stop (0.4 µA) and Standby (0.27 µA) with configurable wake-up sources. Its clock system integrates HSI16 (±1%), LSE (32 kHz RTC), MSI (65 kHz–4.2 MHz), and PLL for flexible power/performance trade-offs.
Analog subsystem includes a 12-bit ADC with hardware oversampling, single-channel 12-bit DAC with output buffer, two rail-to-rail ultra-low-power comparators (operable down to 1.65 V), and a dedicated touch-sensing controller supporting up to 24 capacitive sensing channels - all optimized for sub-µA background operation.
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 | 32 KB Flash (ECC), 8 KB SRAM, 2 KB EEPROM (ECC) - supports firmware updates, data logging, and parameter storage with error resilience. |
| Power Modes | Standby: 0.27 µA (2 wake-up pins); Stop + RTC + RAM retention: 0.8 µA - extends battery life in intermittent-sensing applications. |
| ADC | 12-bit, 1.14 Msps, 16 channels, down to 1.65 V supply - delivers high-resolution sensor acquisition without external signal conditioning. |
| DAC | 12-bit, 1 channel, buffered output, operational down to 1.8 V - enables precise analog waveform generation or reference voltage control. |
| USB Interface | USB 2.0 crystal-less, battery charging detection, LPM support - eliminates external crystal, reduces BOM cost and PCB area for portable devices. |
| LCD Driver | Up to 8×28 segments, on-board step-up converter, contrast adjustment - drives segmented displays directly without external bias circuitry. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch), RoHS-compliant ECOPACK2 package with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Main, analog, and I/O power supplies | Independent domains enable noise isolation between analog peripherals and digital I/O; VDDA must be ≥ VDD for ADC/DAC accuracy. |
| VSS, VSSA | Digital and analog ground returns | Separate analog ground minimizes coupling noise into precision ADC/DAC paths. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2, PH0–PH1 | General-purpose I/Os (51 total, 45 5V-tolerant) | Flexible remappable alternate functions support USB, USART, SPI, I²C, timers, and TSC - simplifies board layout and firmware reuse. |
| PC13–PC15 | RTC oscillator inputs (LSE) | Dedicated low-power crystal pins with built-in load capacitance tuning - ensures stable RTC timing at <1 µA. |
| PA11/PA12 | USB D+/D− | Crysal-less USB transceivers with internal trimming - eliminates 48 MHz crystal and matching network for cost-sensitive designs. |
| VLCD | LCD voltage supply output | On-chip step-up converter generates adjustable VLCD (2.3–4.5 V) - powers LCD without external charge pump or DC-DC. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power standby mode | 0.27 µA with two wake-up pins active - enables multi-year battery life in wireless sensor nodes with infrequent wake-ups. |
| Crystal-less USB 2.0 | Integrated 48 MHz HSI48 oscillator with automatic frequency calibration - removes external crystal, saves ~$0.15 BOM cost and 2 mm² PCB area. |
| Hardware LCD controller | 8×28 segment drive with blinking, contrast control, and on-board VLCD generation - eliminates external LCD bias IC and reduces firmware overhead. |
| Dual ultra-low-power comparators | Operational down to 1.65 V supply, window mode, wake-up capability - enables battery voltage monitoring and threshold-triggered wake-up without CPU intervention. |
| Capacitive touch sensing (TSC) | 24-channel hardware-accelerated acquisition with built-in charge transfer - supports robust touchkey, slider, and rotary implementations with <5 µA active current. |
Applications
| Portable Medical Sensor | Smart Utility Meter |
|---|---|
Use Scenario: Wearable blood oxygen saturation (SpO₂) monitor with OLED display and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Main system controller managing optical sensor interface, ADC sampling, LCD update, USB recharging detection, and low-power sleep scheduling. Use Value: 0.27 µA standby current and 3.5 µs wake-up from RAM enable >2-week operation on CR2032; integrated LCD driver reduces component count by 3. | Use Scenario: Battery-backed water/gas meter with pulse counting, tamper detection, and RF communication. IC Role / Device Role / Timing Role: Primary MCU handling metrology pulse capture, RTC-based billing intervals, EEPROM-based tariff storage, and secure firmware updates. Use Value: 2 KB EEPROM with ECC ensures 100k write cycles and 40-year data retention; dual comparators detect battery voltage drop and magnetic tampering simultaneously. |
| Industrial Wireless Node | Low-Power Human-Machine Interface |
Use Scenario: LoRaWAN-enabled temperature/humidity node deployed in remote HVAC ducts. IC Role / Device Role / Timing Role: Sensor hub aggregating I²C HTS221 data, performing local dew-point calculation, and triggering periodic RF transmission via SPI-connected transceiver. Use Value: 88 µA/MHz run-mode efficiency and Stop-mode current of 0.4 µA extend AA battery life to 5+ years; 7-channel DMA offloads CPU during sensor reads. | Use Scenario: Touch-enabled thermostat with segmented LCD, ambient light sensing, and relay control. IC Role / Device Role / Timing Role: Single-chip HMI controller driving LCD, scanning 12 capacitive touch keys, reading ambient light ADC channel, and managing relay timing via advanced timers. Use Value: Integrated TSC reduces touch firmware complexity; 16-bit advanced timers with dead-time insertion enable precise relay switching with zero cross-over noise. |
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 |
|---|---|---|---|
| STM32L053R8H6 | 64 KB Flash (vs. 32 KB), same peripherals and package | Suitable for larger firmware images requiring bootloader + application separation or future feature expansion | Select when firmware size exceeds 256 KB or field-upgrade capability is required. |
| STM32L073RZT6 | 64 KB Flash, 20 KB SRAM, USB + CAN, TFBGA64 package | Supports CAN FD for industrial control networks; higher pin count enables more analog inputs or GPIOs | Choose when CAN interface or >51 I/Os are needed; requires different PCB layout and thermal management. |
Compared with STM32L053R6H6, the R8 variant offers double Flash for complex firmware but identical power and analog performance, while the L073 adds CAN and SRAM at the cost of larger footprint and higher active current - making R6 optimal for cost- and power-constrained portable designs.
Availability
STM32L053R6H6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial wireless nodes, and low-power human-machine interfaces requiring stable component supply and long-term manufacturability.
Supply support for STM32L053R6H6 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, specializing in microcontrollers, power management, sensors, and automotive ICs.
The STM32L0 series is designed for ultra-low-power embedded applications demanding extended battery life, robust analog integration, and secure firmware execution - targeting wearables, IoT endpoints, and energy-metering systems.
FAQ
What is the maximum operating temperature range for the STM32L053R6H6?
The STM32L053R6H6 is rated for operation from –40 °C to +125 °C ambient temperature. This extended range is validated per ST's production test flow and supports deployment in harsh environments such as industrial motor controls, automotive under-hood modules, and outdoor utility meters without derating.
Does the STM32L053R6H6 support hardware encryption or secure boot?
No, the STM32L053R6H6 does not include hardware AES, SHA, or secure boot engines. It features a true random number generator (TRNG) and firewall protection for memory region access control, but lacks dedicated cryptographic accelerators - making it suitable for basic security requirements, not high-assurance applications.
Can the integrated LCD driver operate without external components?
Yes - the STM32L053R6H6's LCD controller includes an on-chip step-up converter generating VLCD (2.3–4.5 V), programmable contrast, and blinking control. Only external LCD glass and optional external capacitor (for VLCD stability) are required; no external bias IC or charge pump is needed.
How many wake-up lines are available in Stop mode?
The STM32L053R6H6 supports up to 16 wake-up lines in Stop mode, mapped across GPIO pins with EXTI capability. These include all 51 I/Os (subject to port configuration), plus RTC alarm, comparator outputs, and USB wakeup - enabling flexible event-driven low-power operation.
STM32L053R6H6 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, LCD, POR, PWM, WDT
- Number of I/O:
- 51
- 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 16x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L053R6H6 FAQ
1.How can I place an order for STM32L053R6H6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L053R6H6 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 STM32L053R6H6 reliable?
The price and inventory of STM32L053R6H6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L053R6H6 is usually 5 days.
3.What payment methods are accepted for STM32L053R6H6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L053R6H6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L053R6H6?
STM32L053R6H6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L053R6H6 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 STM32L053R6H6?
For technical support, including STM32L053R6H6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L053R6H6 requirements.
6.How does Aetrix verify that STM32L053R6H6 is sourced from the original manufacturer or authorized distributors?
All STM32L053R6H6 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 STM32L053R6H6 meets industry standards.
7.What is the process for return or replacement of STM32L053R6H6?
All STM32L053R6H6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L053R6H6, 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 STM32L053R6H6 part is unused and in its original packaging.
Return procedure for STM32L053R6H6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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