My Inquiry
My Account
STMicroelectronics STM32L053R8T3
- Part No.:
- STM32L053R8T3
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L053R8T3.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,657
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32L053R8T3 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), and 12-bit ADC/DAC - deployed in battery-powered industrial sensors and portable medical devices requiring sub-1 µA Stop mode operation and 3.5 µs wake-up from RAM.
For engineers reviewing the STM32L053R8T3 datasheet, STM32L053R8T3 pinout, STM32L053R8T3 application, or STM32L053R8T3 equivalent, key selection criteria include low-power mode current specs (0.27 µA Standby, 0.8 µA Stop+RTC+RAM), 64-pin LQFP package compatibility, USB crystal-less timing tolerance, and LCD segment drive capability (up to 8×28).
Technical Context
The device implements a dual-voltage domain architecture supporting dynamic voltage scaling across three operating ranges (1.65–3.6 V), enabling adaptive power management for mixed-signal workloads. Its clock system integrates factory-trimmed 16 MHz HSI, 32 kHz LSE for RTC calibration, and PLL for CPU frequency up to 32 MHz.
Low-power operation is enforced via dedicated hardware blocks: ultra-low-power comparators (down to 1.65 V), 16-bit ultra-low-power timer (LPTIM), and memory retention control per 1-KB RAM bank. The interconnect matrix routes peripherals-including USB, LCD, and TSC-without CPU intervention during Stop mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max - delivers 0.95 DMIPS/MHz for deterministic real-time control in energy-constrained systems. |
| Memory | 64 KB Flash with ECC + 8 KB SRAM + 2 KB EEPROM with ECC - ensures firmware integrity and nonvolatile data logging without external components. |
| Power Modes | 0.27 µA Standby (2 wake-up pins), 0.8 µA Stop+RTC+8 KB RAM retention - enables multi-year battery life in metering and sensor nodes. |
| Analog Peripherals | 12-bit ADC (1.14 Msps, 16 ch), 12-bit DAC (1 ch, buffered), 2x ultra-low-power comparators - supports precision signal acquisition and analog output at 1.65 V minimum supply. |
| USB Interface | USB 2.0 crystal-less with battery charging detection - eliminates external crystal and reduces BOM cost in portable USB-peripheral designs. |
| LCD Driver | Supports up to 8×28 segments with on-board step-up converter and contrast adjustment - enables direct drive of segmented LCDs in wearables and handheld instruments. |
| Timers | 9 timers including 1x 16-bit advanced (4 ch), 2x 16-bit general-purpose (2 ch each), 1x ultra-low-power LPTIM - provides flexible PWM, capture/compare, and low-power timekeeping. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for thermal dissipation in compact industrial PCB layouts and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply (1.65–3.6 V) | Supplies core and I/O domains; requires local 100 nF decoupling per VDD pin for stable low-power operation. |
| VSS | GND reference | Dedicated ground return for analog/digital sections; separation improves ADC/DAC SNR in mixed-signal applications. |
| PA0–PA15 | General-purpose I/O (45 total, 40 5V-tolerant) | Configurable as GPIO, ADC input, DAC output, or touch sensing channel - enables shared pin usage across analog and digital functions. |
| PC13–PC15 | RTC oscillator inputs (LSE) | Connects to 32.768 kHz crystal; PC14/PC15 support calibration for ±20 ppm accuracy over -40 to 125 °C. |
| PA11/PA12 | USB D+/D− | Crystal-less USB interface; internal transceiver supports full-speed operation and battery charge detection without external PHY. |
| VLCD | LCD voltage supply output | On-chip step-up converter generates adjustable VLCD (2.4–3.3 V) - eliminates external boost IC for LCD biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power BOR | 5 selectable brownout thresholds (1.6–2.8 V) - prevents erratic operation during battery voltage sag while minimizing false resets. |
| True RNG | Hardware entropy source compliant with NIST SP800-90A - enables secure key generation for TLS handshakes in IoT edge nodes. |
| Capacitive Sensing (TSC) | 24-channel touch controller with built-in de-bounce and noise filtering - supports robust touchkey, slider, and rotary implementations without external components. |
| SW-DP Debug | Serial Wire Debug port with 4-pin interface - allows full JTAG/SWD debugging and flash programming through standard ST-LINK probes. |
| Firewall Protection | Memory protection unit (MPU) + readout protection (RDP) Level 2 - prevents unauthorized firmware extraction and memory access in certified medical devices. |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-operated gas/water meter with pulse counting, LCD display, and periodic RF transmission. IC Role / Device Role / Timing Role: Main MCU handling metrology calculations, LCD refresh (8×28), RTC-based wake-up scheduling, and USB firmware updates. Use Value: 0.8 µA Stop+RTC+RAM retention extends 10-year battery life; crystal-less USB simplifies field calibration without external clock components. | Use Scenario: Handheld electrocardiogram device with analog front-end, OLED/LCD display, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Signal processor acquiring 12-bit ECG data via ADC, driving LCD segments, managing low-power sleep between measurements. Use Value: 12-bit ADC with 1.14 Msps sampling supports 500 Hz bandwidth; ultra-low-power comparators enable R-peak detection with <1 µA active current. |
| Wireless Sensor Node | Industrial Panel Controller |
Use Scenario: LoRaWAN node monitoring temperature, humidity, and door status in cold-chain logistics. IC Role / Device Role / Timing Role: Sensor aggregator with capacitive touch interface, SPI-connected environmental sensors, and LPUART for modem communication. Use Value: 24-channel TSC enables multi-button UI; 3.5 µs wake-up from RAM ensures rapid response to interrupt-driven sensor events. | Use Scenario: DIN-rail mounted HMI controlling HVAC actuators with local LCD feedback and RS-485 Modbus interface. IC Role / Device Role / Timing Role: Real-time controller executing PID loops, updating 8×28 LCD, and managing isolated RS-485 via USART with automatic direction control. Use Value: 9 timers (including LPTIM) support simultaneous motor control, display refresh, and communication framing; 45 5V-tolerant I/Os simplify interfacing with industrial logic levels. |
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 crypto engine | Better suited for secure firmware OTA updates and larger protocol stacks (e.g., MQTT over TLS) | Select when cryptographic acceleration and extended memory are required; not pin-compatible due to different peripheral mapping. |
| STM32L433RCT6 | Cortex-M4F core, 256 KB Flash, 64 KB SRAM, FPU, no LCD, higher active current (82 µA/MHz) | Targeted at sensor fusion (e.g., IMU + environmental) with floating-point math and richer connectivity (USB FS, Quad-SPI) | Choose for compute-intensive algorithms; requires redesign for higher power budget and lacks integrated LCD driver. |
Compared with STM32L053R8T3, STM32L073RZT6 trades LCD capability for security and memory headroom, while STM32L433RCT6 shifts focus from ultra-low-power autonomy to performance - making the R8T3 optimal for cost-sensitive, LCD-equipped, long-life battery applications where sub-µA sleep is mandatory.
Availability
STM32L053R8T3 is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, wireless sensor nodes, and industrial panel controllers requiring stable component supply across multi-year production cycles.
Supply support for STM32L053R8T3 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, and MEMS sensors for industrial, automotive, and consumer markets.
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 code density or debug accessibility.
FAQ
What is the maximum operating temperature range for STM32L053R8T3?
The STM32L053R8T3 is rated for operation from –40 °C to +125 °C ambient temperature. This extended range is validated across all low-power modes and supported by factory calibration of the internal temperature sensor and 32 kHz LSE oscillator, making it suitable for under-hood automotive modules and industrial environments with high thermal stress.
Does STM32L053R8T3 support USB device functionality without an external crystal?
Yes - the device integrates a crystal-less USB 2.0 full-speed transceiver with internal clock recovery system (CRS) that synchronizes to the host's SOF packets. This eliminates the need for a 48 MHz crystal or external oscillator, reducing BOM cost and PCB area while maintaining ±0.25% USB timing accuracy per USB-IF compliance requirements.
How many I/O pins are 5V tolerant on STM32L053R8T3?
45 of the 51 fast I/Os are 5V tolerant (specifically PA0–PA15, PB0–PB15, PC0–PC15, PD2, PH0, PH1). This allows direct interfacing with legacy 5V logic, industrial sensors, and RS-232 level shifters without external voltage translators - critical for retrofitting into existing 5V systems while retaining low-power benefits.
Can the internal 2 KB EEPROM be used for parameter storage across power cycles?
Yes - the 2 KB data EEPROM includes error-correcting code (ECC) and supports 100,000 write/erase cycles with 20-year data retention at 55 °C. It is accessed via dedicated PEC (Program/Erase Controller) registers and supports byte-level writes, enabling reliable storage of calibration coefficients, device IDs, and user configuration without external serial EEPROM.
STM32L053R8T3 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:
- 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 16x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L053R8T3 FAQ
1.How can I place an order for STM32L053R8T3 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L053R8T3 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 STM32L053R8T3 reliable?
The price and inventory of STM32L053R8T3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L053R8T3 is usually 5 days.
3.What payment methods are accepted for STM32L053R8T3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L053R8T3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L053R8T3?
STM32L053R8T3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L053R8T3 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 STM32L053R8T3?
For technical support, including STM32L053R8T3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L053R8T3 requirements.
6.How does Aetrix verify that STM32L053R8T3 is sourced from the original manufacturer or authorized distributors?
All STM32L053R8T3 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 STM32L053R8T3 meets industry standards.
7.What is the process for return or replacement of STM32L053R8T3?
All STM32L053R8T3 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L053R8T3, 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 STM32L053R8T3 part is unused and in its original packaging.
Return procedure for STM32L053R8T3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L053R8T3 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
