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STMicroelectronics STM32L053R6T6
- Part No.:
- STM32L053R6T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L053R6T6.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:958
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Product details
Overview
STM32L053R6T6 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 12-bit ADC (1.14 Msps), and USB 2.0 crystal-less interface - deployed in battery-powered industrial sensors and portable medical monitors.
For engineers reviewing the STM32L053R6T6 datasheet, STM32L053R6T6 pinout, STM32L053R6T6 application, or STM32L053R6T6 equivalent, key selection criteria include standby current (0.27 µA), RTC + RAM retention in Stop mode (0.8 µA), 45 I/Os with 5V tolerance, LCD driver support (8×28 segments), and true RNG with firewall protection.
Technical Context
The STM32L053R6T6 implements a dual-voltage domain architecture with dynamic voltage scaling to optimize power across operating modes: Run (88 µA/MHz), Stop (0.4–0.8 µA), and Standby (0.27 µA). Its Cortex-M0+ core includes MPU and supports Thumb-2 instruction set at up to 32 MHz.
Peripherals are routed via interconnect matrix supporting concurrent access: USB 2.0 (crystal-less, battery charging detection), 3x USART/LPUART, 4x SPI (16 Mbit/s), 2x I²C (SMBus/PMBus), 9 timers including ultra-low-power LPTIM, and capacitive touch sensing on up to 24 channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 32 MHz max - enables deterministic real-time control with <1 µs interrupt latency. |
| Memory | 32 KB Flash (ECC), 8 KB SRAM, 2 KB EEPROM (ECC) - supports firmware updates and data logging with error resilience. |
| Power Consumption | 0.27 µA Standby, 0.8 µA Stop + RTC + 8 KB RAM retention - extends battery life to multi-year operation in coin-cell applications. |
| Analog Peripherals | 12-bit ADC (16 ch, 1.14 Msps), 12-bit DAC (1 ch), 2x ultra-low-power comparators - enables precision sensor signal acquisition down to 1.65 V supply. |
| Communication | USB 2.0 crystal-less, 3x USART/LPUART, 4x SPI, 2x I²C - provides flexible connectivity without external crystal for USB, reducing BOM cost and board space. |
| Special Functions | LCD driver (8×28 segments), capacitive touch (24 channels), true RNG, CRC unit, 96-bit UID - integrates human interface and security into single-chip solution. |
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, VSS | Power supply and ground | Dual-domain supply pins: VDD powers digital/analog domains; VSS provides reference return path for all circuits. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2, PH0–PH1 | General-purpose I/O | Up to 51 fast I/Os (45 tolerant to 5 V) - supports GPIO, EXTI, AF functions including USB D+/D−, ADC inputs, DAC output, and LCD segment/com drivers. |
| NRST | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts external push-button or supervisor IC assertion. |
| BOOT0 | Boot mode selection | High at reset enables system memory bootloader (USART/SPI); low selects main Flash memory execution. |
| USB_DP / USB_DM | USB 2.0 differential data lines | Crystal-less USB interface with integrated transceiver and battery charging detection - eliminates need for external 48 MHz crystal. |
| VLCD | LCD voltage supply | Provides regulated voltage for LCD contrast control; supports step-up converter for segment bias generation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power modes | Standby (0.27 µA), Stop (0.4 µA), Stop + RTC + RAM retention (0.8 µA) - enables decade-scale battery life in IoT endpoint nodes. |
| Integrated LCD controller | Drives up to 8 commons × 28 segments with on-board step-up converter and blinking mode - eliminates external LCD bias IC in portable displays. |
| Capacitive touch sensing | 24-channel TSC supporting touchkey, linear, and rotary sensors - enables robust user interface with minimal external components. |
| Security peripherals | True RNG, firewall protection, 96-bit unique ID, ECC on Flash/EEPROM - meets basic requirements for secure firmware boot and device identity. |
| Low-power analog | 12-bit ADC (1.14 Msps, 16 ch), 12-bit DAC (1 ch), 2x comparators (window mode + wake-up) - enables high-fidelity sensor processing at sub-2 V supply. |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-powered electricity/water meter with LCD display, tamper detection, and periodic RF transmission. IC Role / Device Role / Timing Role: Main system controller handling metrology sampling (ADC), LCD refresh (LCD controller), RTC-based billing intervals, and USB/UART firmware updates. Use Value: 0.27 µA Standby current enables >10-year battery life; integrated EEPROM stores calibration and usage logs with ECC integrity. | Use Scenario: Handheld electrocardiogram device with analog front-end, OLED/LCD display, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Signal acquisition controller managing 12-bit ADC sampling at 1 kHz, DAC-driven reference generation, and capacitive touch UI navigation. Use Value: 0.8 µA Stop mode with RTC + full RAM retention allows instant wake-up for emergency capture; 5V-tolerant I/O interfaces directly with legacy analog sensors. |
| Industrial Wireless Sensor Node | Asset Tracking Beacon |
Use Scenario: Temperature/humidity sensor node powered by primary Li-SOCl₂ battery, transmitting data via LoRaWAN gateway. IC Role / Device Role / Timing Role: Low-duty-cycle host managing sensor polling (I²C), environmental ADC reads, RTC-triggered transmissions, and deep-sleep scheduling. Use Value: 3.5 µs wake-up from RAM ensures rapid response to external interrupts (e.g., motion trigger); USB crystal-less simplifies certification and reduces component count. | Use Scenario: GPS-denied indoor asset tracker using BLE beaconing and accelerometer-based motion detection. IC Role / Device Role / Timing Role: Motion-aware controller using ultra-low-power comparators for wake-on-motion, 12-bit ADC for battery voltage monitoring, and LPUART for configuration. Use Value: 2x comparators with window mode detect voltage thresholds or analog events without CPU involvement - extends shelf life during storage. |
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 |
|---|---|---|---|
| STM32L053C6T6 | LQFP48 package, 48-pin count, fewer I/Os (37 vs 51), same memory/peripherals | Suitable for space-constrained designs where LCD or USB is unused | Select when board area is critical and peripheral count can be reduced. |
| STM32L073RZT6 | 64-pin LQFP, 192 KB Flash, 20 KB RAM, no LCD, added AES-128 and SHA-256 crypto accelerators | Targeted at secure wireless edge nodes requiring firmware signing and encrypted comms | Choose when cryptographic acceleration and larger code space outweigh LCD/USB needs. |
Compared with STM32L053C6T6, the R6T6 offers more I/Os and LCD capability in same footprint family; versus STM32L073RZT6, it trades crypto features for integrated display and ultra-low-power analog - making it optimal for cost-sensitive, battery-limited HMI endpoints.
Availability
STM32L053R6T6 is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial wireless sensor nodes, and asset tracking beacons requiring stable component supply across long product lifecycles.
Supply support for STM32L053R6T6 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 devices for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications - optimized for battery-operated devices demanding multi-year runtime, integrated peripherals, and robust security primitives without sacrificing performance.
FAQ
What is the maximum operating temperature range for the STM32L053R6T6?
The STM32L053R6T6 is rated for operation from –40 °C to +125 °C ambient temperature. This extended range supports deployment in harsh industrial environments such as motor control enclosures, outdoor utility infrastructure, and automotive under-hood telemetry modules - validated per ST's production test flow and JEDEC JESD22-A108 qualification.
Does the STM32L053R6T6 support USB without an external crystal?
Yes, the STM32L053R6T6 integrates a crystal-less USB 2.0 transceiver with internal clock recovery system (CRS), enabling full-speed USB communication without external 48 MHz crystal. It also includes battery charging detection circuitry compliant with USB Battery Charging v1.2 specification - verified in DS10152 Rev 10 Section 3.19.5.
How many I/O pins are 5V tolerant on the STM32L053R6T6?
45 of the 51 general-purpose I/O pins on the STM32L053R6T6 are 5V tolerant when configured in input, output, or alternate function modes - confirmed in Section 3.7 and Table 15 of DS10152 Rev 10. This allows direct interfacing with legacy 5V logic, sensors, and displays without level-shifting circuitry.
Can the internal EEPROM be used for data logging with wear-leveling?
The 2 KB internal EEPROM supports up to 100,000 write/erase cycles and 40-year data retention at 55 °C (DS10152 Rev 10, Table 52). While no hardware wear-leveling is built-in, ST provides software libraries (e.g., EEPROM emulation layer in STM32CubeL0) that implement logical page rotation across physical sectors to extend effective endurance - validated for cyclic logging in field-deployed meters.
STM32L053R6T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- 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:
STM32L053R6T6 FAQ
1.How can I place an order for STM32L053R6T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L053R6T6 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 STM32L053R6T6 reliable?
The price and inventory of STM32L053R6T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L053R6T6 is usually 5 days.
3.What payment methods are accepted for STM32L053R6T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L053R6T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L053R6T6?
STM32L053R6T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L053R6T6 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 STM32L053R6T6?
For technical support, including STM32L053R6T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L053R6T6 requirements.
6.How does Aetrix verify that STM32L053R6T6 is sourced from the original manufacturer or authorized distributors?
All STM32L053R6T6 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 STM32L053R6T6 meets industry standards.
7.What is the process for return or replacement of STM32L053R6T6?
All STM32L053R6T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L053R6T6, 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 STM32L053R6T6 part is unused and in its original packaging.
Return procedure for STM32L053R6T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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