My Inquiry
My Account
STMicroelectronics STM32L011E3Y6TR
- Part No.:
- STM32L011E3Y6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 25-UFBGA, WLCSP
- Datasheet:
-
STM32L011E3Y6TR.pdf
- Description:
- IC MCU 32BIT 8KB FLASH 25WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,699
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32L011E3Y6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in a 20-pin UFQFPN (3 × 3 mm) package, featuring 16 KB Flash, 2 KB SRAM, 512 B EEPROM with ECC, 12-bit ADC (1.14 Msps), and dual ultra-low-power comparators. It operates from 1.65–3.6 V across –40 to +125 °C and achieves 0.23 µA Standby mode with 2 wakeup pins - deployed in battery-powered sensor nodes and smart utility meters.
For engineers reviewing the STM32L011E3Y6TR datasheet, STM32L011E3Y6TR pinout, STM32L011E3Y6TR application, or STM32L011E3Y6TR equivalent, key selection criteria include verified low-power mode current (0.29 µA Stop), 5 µs Flash wakeup time, 23 I/Os with 5V tolerance, and integrated ECC for Flash and EEPROM - critical for firmware integrity in long-life embedded deployments.
Technical Context
The STM32L011E3Y6TR implements a single-core Arm Cortex-M0+ running up to 32 MHz with 0.95 DMIPS/MHz performance, supported by multiple clock sources: factory-trimmed 16 MHz HSI (±1%), 37 kHz LSI, 65 kHz–4.2 MHz MSI, and 32 kHz LSE for RTC calibration. Its power architecture includes dynamic voltage scaling, programmable voltage detector (PVD), and ultra-low-power brownout reset (BOR) with five thresholds.
It integrates a 7-channel DMA controller servicing ADC, SPI, I²C, USART, and timers; supports serial wire debug (SW-DP); and delivers rich analog capability including temperature sensor, internal voltage reference (VREFINT), and two comparators with window mode and wake-up capability down to 1.65 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max - enables deterministic real-time control with minimal code footprint |
| Memory | 16 KB Flash (ECC-protected), 2 KB SRAM, 512 B EEPROM (ECC-protected) - ensures firmware/data resilience in field-deployed devices |
| ADC | 12-bit, 1.14 Msps, 10 channels, operational down to 1.65 V - supports high-resolution sensor acquisition without external biasing |
| Low-power modes | 0.23 µA Standby (2 wakeup pins), 0.29 µA Stop (16 wakeup lines), 0.54 µA Stop+RTC+2KB RAM retention - extends coin-cell battery life to >10 years |
| Supply range | 1.65 V to 3.6 V, –40 °C to +125 °C - qualified for industrial and metering environments with wide thermal margins |
| I/O capability | 23 I/Os, 20 of which are 5V tolerant - simplifies interface with legacy peripherals and mixed-voltage systems |
| Debug interface | Serial Wire Debug (SW-DP) only - reduces pin count and PCB area vs JTAG while retaining full development visibility |
Pinout & Package
STM32L011E3Y6TR is housed in a 20-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN) package measuring 3 × 3 mm with 0.5 mm pitch, compliant with ECOPACK®2 environmental standards and optimized for space-constrained PCB layouts.
| 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 |
| VSS | Ground reference | Dedicated ground return path; multiple VSS pins reduce impedance and improve noise immunity |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 5V-tolerant logic for system-level reset coordination |
| PA0–PA15 | General-purpose I/Os (23 total, 20 5V tolerant) | Configurable as GPIO, alternate functions (USART, SPI, I²C, timers), or analog inputs - supports flexible peripheral mapping |
| PC13–PC15 | Low-power oscillator pins (LSE) | Drive 32.768 kHz crystal for RTC; PC14/PC15 support calibration for ±20 ppm accuracy over temperature |
| SYSCLK | System clock output | Optional clock output for trace/debug or feeding external logic; configurable via RCC register |
Key Features
| Feature | Design Value |
|---|---|
| ECC on Flash and EEPROM | Hardware error correction prevents silent data corruption - essential for certified firmware updates and data logging |
| Ultra-low-power comparators | Two independent comparators with window mode and wake-up capability down to 1.65 V - enables autonomous analog event detection without CPU wake |
| Pre-programmed bootloader | Factory-loaded USART/SPI bootloader - allows field firmware updates without debug probe or external programmer |
| Dynamic voltage scaling | Three voltage scaling ranges (VOS0–VOS2) dynamically adjusted with CPU frequency - optimizes power vs performance trade-off per task |
| Temperature sensor + VREFINT | Calibrated internal sensor (±1.5 °C accuracy) and stable 1.22 V reference - eliminates need for external components in battery monitoring or thermal management |
Applications
| Smart Utility Metering | Wireless Sensor Node |
|---|---|
Use Scenario: Battery-powered gas/water meter with pulse counting, pressure sensing, and LoRaWAN backhaul. IC Role / Device Role / Timing Role: Primary MCU managing sensor acquisition, RTC-based timestamping, secure data encryption, and low-duty-cycle radio scheduling. Use Value: 0.29 µA Stop mode and 5 µs wakeup enable sub-10 µA average system current - extending AA battery life beyond 15 years. |
Use Scenario: Environmental monitoring node (temp/humidity/CO₂) deployed in HVAC ducts or agricultural fields. IC Role / Device Role / Timing Role: Host controller for analog sensors and I²C peripherals, executing periodic measurements and BLE advertising bursts. Use Value: Integrated 12-bit ADC with hardware oversampling and 2 KB SRAM retention in Stop mode allow precise, low-noise readings without external memory or signal chain ICs. |
| Industrial Control Panel | Asset Tracking Beacon |
Use Scenario: DIN-rail mounted HMI with pushbuttons, LED indicators, and RS-485 communication to PLCs. IC Role / Device Role / Timing Role: Local intelligence unit handling button debouncing, LED PWM dimming, and isolated UART protocol translation. Use Value: 23 I/Os with 5V tolerance simplify direct interfacing to industrial-level signals - eliminating level-shifters and reducing BOM cost. |
Use Scenario: GPS-disabled indoor asset tracker using accelerometer-triggered BLE beaconing in warehouses. IC Role / Device Role / Timing Role: Wake-on-motion controller coordinating accelerometer interrupt, RTC alarm, and BLE stack timing. Use Value: Dual ultra-low-power comparators monitor accelerometer output rails and trigger wake from 0.23 µA Standby - achieving <1 µA average current during idle periods. |
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 |
|---|---|---|---|
| STM32L011K3U6 | 32-pin UFQFPN32 (5 × 5 mm); adds 3 more GPIOs and 1 extra timer channel | Better suited for designs requiring >20 I/Os or additional capture/compare functionality | Select when board layout accommodates larger package and peripheral count exceeds E3Y6TR's 20-pin limit |
| STM32L031K3T6 | 32-pin LQFP32; includes USB 2.0 FS device interface and higher Flash (32 KB) | Required for USB-connected diagnostics, firmware update, or HID-class peripherals | Choose only if native USB connectivity is mandatory - otherwise E3Y6TR offers lower power and smaller footprint |
Compared with STM32L011K3U6 and STM32L031K3T6, the STM32L011E3Y6TR delivers the smallest form factor and lowest static current in its family, making it optimal for size- and battery-limited applications where USB or expanded I/O are unnecessary.
Availability
STM32L011E3Y6TR is available at Aetrix Electronics and suitable for smart metering, wireless sensor networks, and industrial HMI applications requiring stable component supply, long-term lifecycle assurance, and guaranteed traceability.
Supply support for STM32L011E3Y6TR 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 ICs, sensors, and analog products for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, robust operation across extended temperature ranges, and integrated analog/mixed-signal capability - all within compact packages.
FAQ
What is the maximum operating frequency and associated power consumption in Run mode?
The STM32L011E3Y6TR runs up to 32 MHz with dynamic voltage scaling. At 32 MHz and 3.3 V, typical Run mode current is 76 µA/MHz (2.43 mA total). With code executing from Flash and no peripherals active, measured current is 2.38 mA - confirmed in Section 6.3.4 of the official datasheet (DocID027973 Rev 5).
Does this MCU support hardware encryption or secure boot features?
No. The STM32L011E3Y6TR does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. Security relies on software-implemented algorithms and external secure elements. For hardware security, ST recommends the STM32L4 or STM32L5 series, which integrate AES-128, HASH, and secure firmware install (SFI) capabilities.
Can the internal 16 MHz RC oscillator be used as the system clock without calibration?
Yes. The HSI16 oscillator is factory-trimmed to ±1% accuracy at 25 °C and 3.3 V, enabling immediate use as the system clock without external crystal or runtime calibration. Full trim range (±10%) is accessible via RCC_HSICALIBRATION_DEFAULT for fine-tuning against temperature or voltage drift.
What is the minimum supply voltage required to retain RAM and EEPROM contents during Stop mode?
RAM and EEPROM data retention is guaranteed down to 1.65 V in Stop mode, matching the device's absolute minimum operating voltage. The 512 B EEPROM retains data for 10 kcycles/20 years at 25 °C, and 2 KB SRAM maintains state with 0.54 µA current when RTC and RAM retention are enabled - per Table 29 and Table 43 in the datasheet.
STM32L011E3Y6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 25-UFBGA, WLCSP
- Series:
- STM32L0
- Packaging:
- Tape & Reel (TR)
- 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
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 21
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 512 x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L011E3Y6TR FAQ
1.How can I place an order for STM32L011E3Y6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L011E3Y6TR 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 STM32L011E3Y6TR reliable?
The price and inventory of STM32L011E3Y6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L011E3Y6TR is usually 5 days.
3.What payment methods are accepted for STM32L011E3Y6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L011E3Y6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L011E3Y6TR?
STM32L011E3Y6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L011E3Y6TR 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 STM32L011E3Y6TR?
For technical support, including STM32L011E3Y6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L011E3Y6TR requirements.
6.How does Aetrix verify that STM32L011E3Y6TR is sourced from the original manufacturer or authorized distributors?
All STM32L011E3Y6TR 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 STM32L011E3Y6TR meets industry standards.
7.What is the process for return or replacement of STM32L011E3Y6TR?
All STM32L011E3Y6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L011E3Y6TR, 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 STM32L011E3Y6TR part is unused and in its original packaging.
Return procedure for STM32L011E3Y6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L011E3Y6TR 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…
