STMicroelectronics STM32F071RBT7TR

Overview

STM32F071RBT7TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0 microcontroller in LQFP64 package, operating up to 48 MHz with 128 KB Flash, 16 KB SRAM (HW parity), and integrated peripherals including 12-bit ADC (1.0 µs), dual-channel 12-bit DAC, two analog comparators, RTC with calendar, and HDMI CEC. It targets industrial control panels requiring low-power operation, capacitive touch interfaces, and robust communication via 4 USARTs (including LIN/IrDA), 2 I²C (Fast Mode Plus), and 2 SPI.

For engineers reviewing the STM32F071RBT7TR datasheet, STM32F071RBT7TR pinout, STM32F071RBT7TR application, or STM32F071RBT7TR equivalent, key selection criteria include its 64-pin LQFP package with 51 GPIOs (68 total I/Os mappable to interrupts), VDDIO2 support for mixed-voltage I/O (1.65–3.6 V), and hardware CRC unit for firmware integrity - all critical for cost-sensitive, space-constrained embedded designs.

Technical Context

The STM32F071RBT7TR implements a single-core Arm Cortex-M0 CPU 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 128-bit prefetch buffer and ECC protection, plus 16 KB SRAM with hardware parity checking for fault-tolerant data storage.

Clock management integrates four oscillators: external 4–32 MHz HSE, 32 kHz LSE for RTC, internal 8 MHz HSI (with x6 PLL), and factory-trimmed 48 MHz HSI48 for USB/CEC timing. Power management supports Sleep, Stop, and Standby modes with programmable voltage detector (PVD) and VBAT backup for RTC and 40-byte registers.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 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 STM32F072RBT6, the STM32F071RBT7TR trades USB for HDMI CEC and lower Flash density, making it optimal for consumer IR/CEC ecosystems; versus STM32F091RCT6, it offers lower cost and power for non-CAN applications where 128 KB Flash suffices.

Availability

STM32F071RBT7TR is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, home appliance control boards, and automated test equipment requiring stable component supply across multi-year production cycles.

Supply support for STM32F071RBT7TR 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F0 series delivers entry-level Cortex-M0 performance with rich analog integration and low-power features, targeting cost-sensitive embedded applications where reliability, toolchain maturity, and ecosystem support are critical.

FAQ

What is the maximum operating frequency and supported voltage range for STM32F071RBT7TR?

The STM32F071RBT7TR operates at up to 48 MHz using its internal 48 MHz HSI48 oscillator or external crystal. Its digital and I/O 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 mixed-voltage system design without level shifters.

Does STM32F071RBT7TR support hardware-based cryptographic functions?

No, the STM32F071RBT7TR does not include dedicated cryptographic accelerators (e.g., AES, SHA, PKA). It relies on software libraries for basic encryption; for hardware security, ST recommends the STM32L4 or STM32G0 series with AES-128 engines and secure key storage.

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

The STM32F071RBT7TR provides up to 24 capacitive sensing channels via its integrated Touch Sensing Controller (TSC), which uses charge-transfer measurement with hardware-accelerated scanning. Channels are assigned to specific GPIOs listed in Table 5 of DS10009 Rev 7, supporting touchkey, linear, and rotary configurations without CPU intervention.

What debug interfaces are supported and what are the minimum required pins?

The STM32F071RBT7TR supports Serial Wire Debug (SWD) using two pins: SWDIO (PA13) and SWCLK (PA14). No reset pin is mandatory for SWD, but NRST improves reliability during firmware upload. SWD enables full debugging, flash programming, and real-time tracing via standard ARM-compliant tools like ST-Link v2 and J-Link.