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STMicroelectronics STM32L053C8T7
- Part No.:
- STM32L053C8T7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32L053C8T7.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:952
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Product details
Overview
STM32L053C8T7 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), 12-bit ADC (1.14 Msps), and 12-bit DAC - deployed in battery-powered smart meters, portable medical sensors, and industrial IoT edge nodes requiring sub-1 µA Stop mode operation.
For engineers reviewing the STM32L053C8T7 datasheet, STM32L053C8T7 pinout, STM32L053C8T7 application, or STM32L053C8T7 equivalent, key selection criteria include wake-up time from Stop mode (5 µs), 0.8 µA Stop mode + RTC + 8-KB RAM retention, 45 I/Os (5V tolerant), USB crystal-less support, and LCD segment drive capability up to 8×28.
Technical Context
The STM32L053C8T7 integrates a Cortex-M0+ core with MPU, operating from 32 kHz to 32 MHz, delivering 0.95 DMIPS/MHz. Its power architecture supports five low-power modes - including Standby (0.27 µA), Stop (0.4 µA), and Stop+RTC+RAM retention (0.8 µA) - enabled by ultra-safe BOR, programmable PVD, and multiple internal RC oscillators (HSI16, LSI, MSI).
Analog subsystem includes dual ultra-low-power comparators (down to 1.65 V), temperature sensor, VREFINT, and dedicated TSC supporting 24 capacitive sensing channels. Digital peripherals feature 7-channel DMA, 9 timers (including LPTIM and RTC), and communication interfaces: 1x USB, 3x USART/LPUART, up to 4x SPI, and 2x I2C with SMBus/PMBus support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+ with MPU, 32 MHz max clock, 0.95 DMIPS/MHz - enables deterministic real-time control in energy-constrained systems. |
| Memory | 64 KB Flash with ECC, 8 KB SRAM, 2 KB EEPROM with ECC - supports firmware updates, data logging, and parameter storage with error resilience. |
| Power Consumption | 0.8 µA in Stop mode + RTC + 8-KB RAM retention - sustains timekeeping and volatile state across extended battery life (e.g., >10 years on CR2032). |
| Analog Peripherals | 12-bit ADC (1.14 Msps, 16 ch), 12-bit DAC (1 ch, buffered), 2x ultra-low-power comparators - enables precision sensor signal acquisition and analog output without external components. |
| Low-Power Wake-up | 5 µs wake-up from Flash, 3.5 µs from RAM - meets tight latency requirements for responsive event-driven operation in sensor hubs. |
| USB Interface | USB 2.0 crystal-less with battery charging detection and LPM - eliminates external crystal, reduces BOM cost and PCB area in portable devices. |
| LCD Driver | Supports up to 8×28 segments with on-board step-up converter and contrast adjustment - enables direct drive of segmented LCDs in metering and wearables. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with 51 fast I/Os (45 5V-tolerant), including dedicated LCD segment/common pins, USB D+/D−, and multiple wake-up capable pins (PA0–PA3, PC13, etc.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Main power supply/ground | 1.65–3.6 V operation; dual VDD/VSS pairs ensure stable core and I/O domain decoupling. |
| NRST | Active-low reset input | Internal pull-up; accepts external reset pulse or watchdog timeout; supports low-power reset assertion. |
| PA0–PA3 | Wake-up capable GPIOs | Configurable as EXTI lines; enable ultra-low-power event detection (e.g., button press, sensor alert) from Standby mode. |
| PC13–PC15 | RTC oscillator pins | Connect 32.768 kHz crystal; PC14/PC15 support calibration for ±20 ppm accuracy over -40°C to +85°C. |
| PA11/PA12 | USB D+/D− | Crystal-less USB interface; internal transceiver with battery charge detection (BCD) per USB Battery Charging Spec 1.2. |
| PF9/PF10 | LCD segment drivers | Drive up to 224 segments (8 commons × 28 segments); support blinking, contrast control, and VLCD regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode + RTC + RAM retention | 0.8 µA - preserves real-time clock and critical context while enabling rapid system recovery. |
| Crystal-less USB 2.0 | Eliminates external 48 MHz crystal and matching capacitors - reduces component count and layout complexity. |
| Integrated LCD controller | Drives 8×28 segments with on-chip step-up converter - removes need for external LCD bias supply in portable displays. |
| Capacitive touch sensing (TSC) | 24-channel support for touchkey, linear, and rotary sensors - enables intuitive HMI without external ICs. |
| True random number generator (RNG) | FIPS-compliant entropy source - strengthens cryptographic operations in secure boot and firmware update workflows. |
Applications
| Smart Utility Metering | Portable Medical Sensor |
|---|---|
Use Scenario: Battery-powered electricity/water/gas meter with LCD display, tamper detection, and periodic RF reporting. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, LCD refresh, RTC-based billing intervals, and low-power wake-up for communication bursts. Use Value: 0.8 µA Stop+RTC mode extends CR2032 battery life beyond 10 years; integrated LCD driver eliminates external bias IC. | Use Scenario: Wearable ECG or glucose monitor with touch interface, analog front-end, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Signal acquisition hub processing raw sensor data via 12-bit ADC, driving capacitive touch UI, and managing USB charging detection. Use Value: 5 µs wake-up from Flash ensures immediate response to arrhythmia events; 45 5V-tolerant I/Os simplify interfacing with legacy analog sensors. |
| Industrial Wireless Node | Asset Tracking Beacon |
Use Scenario: LoRaWAN or NB-IoT node monitoring temperature, humidity, and door status in remote cabinets or enclosures. IC Role / Device Role / Timing Role: Low-power sensor aggregator with RTC-triggered sampling, wake-up on external interrupt (e.g., door open), and SPI flash logging. Use Value: 0.4 µA Stop mode minimizes quiescent drain between transmissions; TSC enables mechanical-free status indication via touch-sensitive housing. | Use Scenario: GPS-denied indoor asset tracker using BLE beaconing, motion-triggered logging, and LCD status display. IC Role / Device Role / Timing Role: System-on-chip managing accelerometer wake-up, BLE stack timing, LCD segment refresh, and USB battery charging negotiation. Use Value: Crystal-less USB allows direct connection to host for firmware updates without extra clock components; 2 KB EEPROM stores unique device ID and calibration offsets. |
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 and SHA-256 crypto accelerators | Better suited for secure firmware OTA updates and larger protocol stacks (e.g., MQTT-SN over LoRa) | Select when security acceleration and memory headroom outweigh LCD integration needs. |
| STM32L432KCU6 | Cortex-M4F core, 256 KB Flash, 64 KB SRAM, no LCD, higher active power (82 µA/MHz), FPU support | Targeted at sensor fusion (e.g., IMU + environmental) with floating-point math and real-time OS overhead | Choose when computational throughput (e.g., Kalman filtering) exceeds M0+ capability, accepting higher power budget. |
Compared with STM32L073RZT6 and STM32L432KCU6, the STM32L053C8T7 uniquely balances ultra-low static current, integrated LCD, and USB crystal-less functionality - making it optimal for cost-sensitive, display-centric, battery-limited applications where cryptographic acceleration or floating-point performance is unnecessary.
Availability
STM32L053C8T7 is available at Aetrix Electronics and suitable for smart metering, portable diagnostics, and industrial telemetry requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant LQFP64 packaging.
Supply support for STM32L053C8T7 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 - emphasizing sub-µA sleep currents, integrated peripherals (LCD, USB, TSC), and robustness across extended temperature ranges (-40°C to +125°C) for battery-operated and harsh-environment use cases.
FAQ
What is the maximum operating frequency and corresponding power consumption in Run mode?
The STM32L053C8T7 operates up to 32 MHz using the PLL or HSI16 oscillator. At 32 MHz with code executing from Flash, typical current consumption is 88 µA/MHz - resulting in ~2.8 mA total at full speed. Dynamic voltage scaling allows lower Vcore in reduced-frequency modes to further cut active power.
Does the STM32L053C8T7 support hardware encryption or secure boot features?
No, the STM32L053C8T7 does not include hardware AES, DES, or SHA accelerators. It provides a true RNG and firewall protection for memory isolation, but lacks dedicated cryptographic engines. Secure boot must be implemented in software using the RNG and protected Flash sectors - unlike the STM32L073 which adds AES-128 and SHA-256 accelerators.
Can the integrated LCD driver operate without external components?
Yes - the STM32L053C8T7's LCD controller includes an on-chip step-up converter generating VLCD from VDD, eliminating the need for external boost ICs or charge pumps. Contrast is adjustable via software register, and blinking mode is supported natively for visual alerts.
What are the wake-up sources available from Standby mode?
From Standby mode, wake-up is supported via two dedicated pins (PA0 and PA1), the RTC alarm, the RTC wake-up timer, and the IWDG reset. External interrupts on PA0–PA3 and PC13 are validated in datasheet Section 3.1; no other pins or peripherals can exit Standby directly.
STM32L053C8T7 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:
- 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 10x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L053C8T7 FAQ
1.How can I place an order for STM32L053C8T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L053C8T7 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 STM32L053C8T7 reliable?
The price and inventory of STM32L053C8T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L053C8T7 is usually 5 days.
3.What payment methods are accepted for STM32L053C8T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L053C8T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L053C8T7?
STM32L053C8T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L053C8T7 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 STM32L053C8T7?
For technical support, including STM32L053C8T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L053C8T7 requirements.
6.How does Aetrix verify that STM32L053C8T7 is sourced from the original manufacturer or authorized distributors?
All STM32L053C8T7 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 STM32L053C8T7 meets industry standards.
7.What is the process for return or replacement of STM32L053C8T7?
All STM32L053C8T7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L053C8T7, 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 STM32L053C8T7 part is unused and in its original packaging.
Return procedure for STM32L053C8T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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