STMicroelectronics STM32F071VBH6

Overview

STM32F071VBH6 from STMicroelectronics is a 32-bit Arm® Cortex®-M0 microcontroller in LQFP100 package, operating up to 48 MHz with 128 KB Flash, 16 KB SRAM (HW parity), and integrated peripherals including dual 12-bit DAC, 12-bit ADC (16-channel, 1.0 µs), 12 timers (including advanced-control TIM1), and multiple communication interfaces (4x USART, 2x I²C, 2x SPI/I²S). It serves as a main system controller in industrial HMI panels requiring real-time sensor acquisition, local display control, and serial protocol bridging.

For engineers reviewing the STM32F071VBH6 datasheet, STM32F071VBH6 pinout, STM32F071VBH6 application, or STM32F071VBH6 equivalent, key selection criteria include its 100-pin LQFP package with 87 fast I/Os (68 × 5V-tolerant), RTC with VBAT backup, HDMI CEC support, and SWD debug interface - all critical for space-constrained, low-power embedded control designs.

Technical Context

The device implements an Arm Cortex-M0 core with Harvard architecture, supporting Thumb-2 instruction set and nested vectored interrupt controller (NVIC) with 32 interrupt lines. Its memory subsystem includes 128 KB of Flash with error correction and 16 KB of SRAM with hardware parity checking - enabling robust operation in industrial environments where data integrity is essential.

Clock management integrates four oscillators: 4–32 MHz HSE crystal input, 32 kHz LSE for RTC, 8 MHz HSI with x6 PLL for CPU clock, and 48 MHz HSI48 with automatic trimming for USB/CEC timing accuracy. Power management supports Sleep, Stop, and Standby modes with programmable voltage detector (PVD) and VBAT-supplied RTC/backup registers.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 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 STM32F072VBT6, the STM32F071VBH6 offers HDMI CEC and lower system cost without USB; versus STM32F091VCH6, it provides optimal balance of analog capability, I/O count, and price for non-CAN industrial control - making it ideal for cost-sensitive, mixed-signal edge nodes.

Availability

STM32F071VBH6 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, building automation gateways, and medical diagnostic handhelds requiring stable component supply across long-lifecycle deployments.

Supply support for STM32F071VBH6 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 components for industrial, automotive, and consumer markets.

The STM32F0 series targets cost-sensitive, resource-efficient embedded applications requiring high reliability and rich analog integration - optimized for industrial control, appliance management, and IoT edge nodes with minimal external components.

FAQ

What is the maximum operating frequency and supported voltage range for STM32F071VBH6?

The STM32F071VBH6 operates at up to 48 MHz using its internal 8 MHz HSI oscillator with PLL or external 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 accept VDDIO2 from 1.65 V to 3.6 V - enabling flexible power domain partitioning in mixed-voltage systems.

Does STM32F071VBH6 support hardware CRC calculation?

Yes, it includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE 802.3, supporting 32-bit polynomial (0x04C11DB7) and byte/word data input. This accelerates firmware image verification, secure boot validation, and communication frame integrity checks without CPU overhead.

How many 5V-tolerant I/O pins does STM32F071VBH6 have, and which ports support them?

The STM32F071VBH6 provides 68 5V-tolerant I/Os across GPIO ports A, B, C, D, and E. These pins tolerate up to 5.5 V regardless of VDD level, allowing direct connection to legacy 5V peripherals like RS-232 transceivers, optocouplers, and industrial PLC I/O modules without external level-shifting circuitry.

Can STM32F071VBH6 operate in low-power modes while maintaining RTC and backup register functionality?

Yes, in Stop and Standby modes, the device retains RTC operation and 40 bytes of backup registers when powered by VBAT (1.65–3.6 V). The RTC continues calendar counting, alarm triggering, and periodic wake-up events - enabling ultra-low-power applications like battery-backed data loggers and security sensors with sub-1 µA standby current.