STMicroelectronics STM32L063C8T6

Overview

STM32L063C8T6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller featuring 64 KB Flash, 8 KB SRAM, 2 KB EEPROM with ECC, integrated LCD driver (8×28 segments), USB 2.0 crystal-less interface, and hardware AES-128 encryption - deployed in battery-powered medical sensors and portable industrial data loggers requiring sub-1 µA Stop mode operation.

For engineers reviewing the STM32L063C8T6 datasheet, STM32L063C8T6 pinout, STM32L063C8T6 application, or STM32L063C8T6 equivalent, key selection criteria include verified 0.4 µA Stop mode current, 12-bit ADC (1.14 Msps, 16-channel), DAC output buffer support down to 1.8 V, and LQFP64 package compatibility with existing STM32L0 footprint designs.

Technical Context

The STM32L063C8T6 integrates a Cortex-M0+ core with MPU, operating from 32 kHz to 32 MHz, delivering 0.95 DMIPS/MHz; its clock system includes factory-trimmed 16 MHz HSI, self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE for RTC with calibration - enabling precise timing without external crystals in portable applications.

Its analog subsystem combines a 12-bit ADC (1.14 Msps, 16 channels, functional down to 1.65 V), 12-bit DAC with output buffers, two ultra-low-power comparators (window mode + wake-up), and a temperature sensor with factory calibration - all powered by a single 1.65–3.6 V supply with dynamic voltage scaling support.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for thermal dissipation in compact industrial enclosures and compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power MCU applications.

Compared with STM32L063C8T6, STM32L073RZT6 offers scalable memory within identical low-power architecture, while STM32L432KCU6 trades ultra-low-power optimization for floating-point performance - making the L063 optimal for cost-sensitive, battery-limited LCD-based endpoints.

Availability

STM32L063C8T6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial data loggers, and USB-C diagnostic tools requiring stable component supply across long-life product cycles.

Supply support for STM32L063C8T6 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 - specifically engineered for battery-operated devices demanding sub-µA sleep currents, integrated analog peripherals, and secure firmware execution in harsh environments.

FAQ

What is the minimum operating voltage for the ADC and DAC on STM32L063C8T6?

The ADC operates down to 1.65 V supply, maintaining full 12-bit linearity and 1.14 Msps sampling rate; the DAC requires ≥1.8 V for buffered output operation, with monotonicity guaranteed across its entire 0–VREF range. Both peripherals retain functionality across the full 1.65–3.6 V operating range, enabling direct connection to single-cell Li-ion or alkaline batteries without intermediate regulation.

Does STM32L063C8T6 support crystal-less USB operation, and what are the timing requirements?

Yes - it integrates a self-calibrating 48 MHz HSI48 RC oscillator with USB-specific trimming, achieving ±0.25% accuracy over temperature and voltage. No external crystal or capacitor is required; USB full-speed enumeration completes in ≤1.5 ms after reset, meeting USB-IF suspend/resume timing specifications without external timing components.

How many I/O pins are 5V tolerant, and which packages support this feature?

45 of the 51 fast I/Os are 5V tolerant across all package variants (LQFP64, LQFP48, UFQFPN48); this includes all GPIOs except those dedicated to USB (PA11/PA12), oscillator inputs (PC14/PC15), and BOOT0. The LQFP64 package used in STM32L063C8T6 exposes all 45 tolerant pins, enabling direct interfacing with legacy 5V logic without level shifters.

What is the endurance and data retention specification for the 2 KB EEPROM?

The embedded 2 KB EEPROM supports 100,000 write/erase cycles and guarantees data retention for 20 years at 85 °C or 40 years at 25 °C - validated per JEDEC JESD22-A117. ECC protection detects and corrects single-bit errors during read operations, ensuring integrity of calibration constants and configuration parameters in mission-critical deployments.