STMicroelectronics STM32L010C6T6

Overview

STM32L010C6T6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP48 package, featuring 32 KB Flash, 8 KB SRAM, 256-byte EEPROM, 12-bit ADC (1.14 Msps), and integrated low-power timers including RTC and ultra-low-power LPTIM. It operates from 1.8–3.6 V and supports gas metering, sensor nodes, and battery-powered user interfaces.

For engineers reviewing the STM32L010C6T6 datasheet, STM32L010C6T6 pinout, STM32L010C6T6 application, or STM32L010C6T6 equivalent, key selection criteria include standby current (0.23 µA), 5 µs Flash wakeup time, 31 5-V-tolerant I/Os, and dual UART support (USART + LPUART) for energy-constrained embedded designs.

Technical Context

The STM32L010C6T6 implements a hierarchical low-power architecture with seven operational modes (Run, Sleep, Low-power Run/Sleep, Stop, Standby), where Stop mode retains RTC and 8 KB RAM at 0.6 µA and Standby draws just 0.23 µA with two wakeup pins. Its clock system integrates five sources: HSE (0–32 MHz), LSE (32.768 kHz), HSI16 (±1% factory-trimmed), LSI (37 kHz), and MSI (65 kHz–4.2 MHz), all selectable via RCC registers.

Core peripherals include a 7-channel DMA controller servicing ADC, SPI, I²C, USART, and timers; a 12-bit ADC with up to 10 channels and operation down to 1.8 V; and three general-purpose timers (two 16-bit, one ultra-low-power), plus SysTick, RTC, and dual watchdogs (IWDG/WWDG). The interconnect matrix enables flexible peripheral-to-memory routing without CPU intervention.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch), ECOPACK2-compliant surface-mount package with exposed thermal pad - optimized for compact PCB layouts and thermal reliability in sealed industrial enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L010C6T6, STM32L011K4T6 trades memory and peripherals for compactness, while EFM32ZG108F16 achieves deeper sleep at the cost of integrated bootloader and LPUART-making STM32L010C6T6 optimal for balanced feature-rich, battery-operated edge controllers.

Availability

STM32L010C6T6 is available at Aetrix Electronics and suitable for smart utility metering, wearable health sensors, industrial wireless sensor nodes, and low-power user interfaces requiring stable component supply across multi-year production cycles.

Supply support for STM32L010C6T6 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 automotive semiconductors since 1987.

The STM32L0 value line targets cost-sensitive, ultra-low-power applications such as smart meters, wearables, and battery-operated industrial sensors-emphasizing energy efficiency, integration, and ease of certification.

FAQ

What is the minimum supply voltage for ADC operation on STM32L010C6T6?

The 12-bit ADC remains fully functional down to 1.8 V supply voltage, enabling direct interfacing with single-cell lithium or alkaline batteries without boost regulation. This is verified in Section 6.3.15 of DS12324 Rev 3, where ADC accuracy specs (INL/DNL, offset/gain error) are guaranteed across the full 1.8–3.6 V range.

Does STM32L010C6T6 support hardware encryption or secure boot?

No, the STM32L010C6T6 does not integrate hardware cryptographic accelerators (AES, PKA) or secure boot ROM. It relies on software-based security (e.g., AES-CTR in Flash) and external secure elements for key storage. Secure variants like STM32L5xxx or STM32U5xxx provide TrustZone and hardware crypto engines.

Can the internal 16 MHz RC oscillator (HSI16) be used as the system clock without calibration?

Yes, HSI16 is factory-trimmed to ±1% accuracy at 25 °C and 3.3 V, making it usable as the main system clock without runtime calibration. For higher precision (e.g., USB or audio timing), an external crystal (HSE) or calibrated LSE for RTC is recommended per Section 3.5 and Table 36.

How many I/O pins support external interrupt (EXTI) capability?

All 38 GPIOs support external interrupt capability via the EXTI controller, with 29 lines mapped to individual pins and 9 shared across groups (e.g., PA0–PG0 share EXTI0). Pin-specific EXTI mapping is defined in Table 11 (Alternate Functions) and Section 4 (Pin Descriptions) of DS12324 Rev 3.