STMicroelectronics STM32F071CBT6TR

Overview

STM32F071CBT6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0 microcontroller with 128 KB Flash, 16 KB SRAM (HW parity), and integrated peripherals including 12-bit ADC (1.0 µs conversion), dual 12-bit DAC, 2 analog comparators, and up to 87 fast I/Os (68 with 5V tolerance). It operates from 2.0–3.6 V and supports industrial temperature range (–40°C to +85°C), used in motor control, smart sensors, and embedded HMI systems.

For engineers reviewing the STM32F071CBT6TR datasheet, STM32F071CBT6TR pinout, STM32F071CBT6TR application, or STM32F071CBT6TR equivalent, key selection considerations include its 48 MHz max CPU frequency, internal 48 MHz oscillator with auto-trimming, 24-channel capacitive touch sensing, RTC with alarm/wakeup, and dual SPI/I2S multiplexing for audio and sensor interface consolidation.

Technical Context

The device implements a single-core Arm Cortex-M0 architecture with Harvard bus interface, supporting Thumb-2 instruction set and NVIC with 32 interrupt lines. Its clock system integrates four oscillators - 4–32 MHz HSE, 32 kHz LSE, 8 MHz HSI (with x6 PLL), and factory-trimmed 48 MHz HSI48 - enabling precise USB timing without external crystal.

Power management includes POR/PDR, programmable voltage detector (PVD), and three low-power modes (Sleep, Stop, Standby) with VBAT backup for RTC and registers. The 12-bit ADC features 16-channel input multiplexing, 0–3.6 V conversion range, and separate 2.4–3.6 V analog supply (VDDA), while the dual DAC supports independent output buffering and noise reduction modes.

Key Specifications

Pinout & Package

LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant ECOPACK®2, rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F072CBT6, STM32F071CBT6TR trades USB for CEC and retains identical analog/peripheral richness; versus STM32F030F4P6, it delivers 8× more Flash, full DAC/TSC/RTC feature set, and industrial-grade I/O tolerance - justifying its use in feature-complete, mixed-signal edge nodes.

Availability

STM32F071CBT6TR is available at Aetrix Electronics and suitable for motor control systems, smart sensor nodes, industrial HMI panels, and USB-C consumer accessories requiring stable component supply across extended lifecycle planning.

Supply support for STM32F071CBT6TR 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 automotive semiconductors since 1987.

The STM32F0 series targets cost-sensitive, energy-efficient embedded applications requiring Cortex-M0 performance with rich analog integration - optimized for industrial control, appliance HMI, and IoT edge nodes where Flash size, peripheral flexibility, and low-power operation are critical.

FAQ

What is the maximum operating frequency and supported voltage range?

The STM32F071CBT6TR operates at up to 48 MHz using its internal HSI48 oscillator or external HSE crystal. Its digital supply (VDD) ranges from 2.0 V to 3.6 V, analog supply (VDDA) matches VDD up to 3.6 V, and selected I/Os support VDDIO2 down to 1.65 V - enabling flexible power domain partitioning in mixed-voltage systems.

Does this MCU support USB communication?

No, the STM32F071CBT6TR does not integrate a USB controller. For USB Full-Speed device functionality, consider the pin-compatible STM32F072CBT6, which shares the same LQFP48 package and peripheral set but adds a crystal-less USB 2.0 FS interface leveraging the HSI48 oscillator.

How many capacitive sensing channels are available and what is their implementation?

The device provides 24 dedicated capacitive sensing channels via its Touch Sensing Controller (TSC), using up to 18 GPIOs configured as shield or sense electrodes. Channels support linear and rotary touch sensors, self- and mutual-capacitance measurement, and hardware-accelerated acquisition - eliminating need for external touch ICs in HMI applications.

What debug interface is supported and what are its physical requirements?

It supports Serial Wire Debug (SWD) using two pins: SWDIO (bidirectional data) and SWCLK (clock). No reset line is required for basic debug; SWO trace output is not available on this variant. A standard ARM CMSIS-DAP or ST-LINK v2/v3 debugger connects directly without level shifting, as SWD operates at VDD voltage (2.0–3.6 V).